JOHN DEERE 4620 TRACTOR Service Repair Manual Instant Download (tm1030)

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4620 Tractor
TECHNICAL MANUAL 4620 Tractor
TM1030 (01Apr76)
English
TM1030 (01Apr76)
L?THO ?N U.S.A. ENGL?SH
2
4620 TRACTOR TECHNICAL MANUAL TM-1030 (APR-76)
CONTENTS SECTION 10 - G EN ERA L Group 5 -
Specifications Group 10 - Predelivery,
Delivery, and After-Sale Services Group 15 -
Tune- Up Group 20 - Lubrication Group 25 -
Separation SECT ION 20 - ENG I NE Grou p 5 -
General Information, Diag nos is, and Tests Group
10 - Cylinder Head, Valve Train, and Camshaft
Group 15 - Cyb inder Block, Liners, Pistons, and
Rods Group 20 - Crankshaft, Main Bearings, and
Flywheel Group 25 - Lubrication System Group 30 -
Cooling System SECT I ON 30 - FU EL SYSTEM
Group 5 - Diagnosing Malfunctions
Group 10 - Air Intake System
Group 15 - Fuel Injection System
Gro up 20 - Speed Control Linkage
SECT I ON. 40 - ELECTR ICAL SYSTEM Group 5 -
Information and Wiring Diagrams Group 10 -
Motorola Charging Circuit Group 12 - Delcotron
Charging Circuit Group 15 - Delco-Remy Starting
Circuit Group 17 - John Deere Starting Circuit
Group 20 - Lighting and Accessory Circuits SECT
I ON 50 - POWER TRA I N Group 5 - Syncro-
Range Transmission and PTO CI utches Group 10 -
Syncro-Range Transmission Group 5 - Engine
Disconnect CIutch Group 20 - Power Shift Transm
ission Group 25 - D iffer ent lal Group 30 -
Final Drive Group 35 - Syncro -Range PTO Group 40
- Power Shift PTO Group 45 - Power Front-Wh eel
Drive SECT I ON 60 - STEER I NG AN D BRA KES G
roup 5 - General Information SECT I ON 70 - HYD
RAU LIC SYSTEM Group 5 - General I nformation,
Diagnosis, and Tests Grou p 10 - Main Reservoir,
Filters, Valv es, Oil Cool er, and Oil Reservo
ir Grou p 15 - Hyd ra ulic Pumps Group 20 - Power
Steering Group 25 - Power Brakes Group 30 - Roc
ksh af t and Implement Hitches Group 35 -
Selective Control Valve, Breakaway Couplers, and
Remote Cylinders SECTI ON 80 - MI SCELLA NEOU
S Group 5 - Conventional Front Axle Group 10 -
Power Front-Wh eel Drive Axle
Copyright 1976 DEERE COMPANY Moline,
Illinois All rlghts reserved
Lifho in U.S.A.
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Tractor - 4620 TM- ! 030 (Apr-76)
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INTRODUCTION
Use Technical Manuals lor Actual filervice
Use FOS Manuals for Reference
This technical manual is part of a twin concept
of service
Some features of this technical manual!

• Table of contents at front of manual

• FOS Manualsfor reference

• Exploded views showing parts relationship

• Technical Manualsfor actual service

• Photos showing service techniques

The two kinds of manuals work as a team to give
you both the general background and technical
details of shop service.

• Specifications grouped for easy reference

This technical manual was planned and written lor
yo an experienced technician. Keep it in a perma-
Fundamentals of Service (FOS) Manuals cover basic
theory of operation, fundamentals of trouble
shooting, general maintenance, and 6asic types of
failures and their causes. FOS Manuals are for
training new per- sonnel and for reference by
experienced technicians.
nent binder in the shop where it is handy. Refer
to it whenever in doubt about correct service
procedures or
specifications.
Using the technical manual as a guide will reduce
error and costly delay. It will also assure you
the besl in finished service work.
Technical Manuals are concise service guides for
a specific machine. Technical Manuals are
on-the-job guides containing only the vital
information needed by an experienced technician.
This safety alert symbol identifies important
safety messages in this manual. When you see this
symbol, be alert to the possibility of personal
injury and carefully read the message that
follows.
When a service person should refer to a FOS
Manual for more information, a FOS symbol like
the one at the left is used in the TM to identify
the reference.
Litho in LI. S. A
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Tractor - 4620 TM- l030 (Apr-T6)
Gen eral 10 Specifications 5-1
Section 1O GENERAL Page G RO UP 20 - LU BR I CAT
I ON (Cont.)
CONTENTS OF TH IS SECTI ON Page
GROU P 5 - SPECI FICATIONS
Gene ral Tractor Specifications 5-1 Greases 20-1
G ROU P 10 - PREDE LIV ER, DELIV ERY, Sto ring Lubricants 20-2
A ND A FTER-SA LE SERVICES GRO UP 25 - SEPARAT I ON
Predelivery Services 10-1 Removing RolI-Gard Cab 25-1
Delivery Services 10-3 Install ing RolI-Gard Cab 25-2
After-Sale Services 10-4 Separating Engine from Clutch
GRO U P 15 - T UNE- U P Housing Separating Clutch Housing from 25-2
Prelinn inary Engine Testing 15-1 Power Shift Iransm ission 25-3
Engine Tune-U p 15-1 Sep ar a ting Clutch Housing from
Engine Final Testing 15-2 Syncro- Range trans mi ssion 25-5
Removing Engine Separating Engine fro m Front End
Removing Fi nal Drive Assembly Specifications Tor
gues for Hardware Spec ial Tool s
25-7 25-7 25-8 25-9 25-9 25-9
Tractor Tune-Up
15-3
GRO U P 20 - LU BR ICA IO N Lubrication Chart
Engine Lubricating Oil s Tr ansmiss ion- Hydraul
ic O il
20-1 20-2 20-2
Group 5 GENERAL TRACTOR SPECIFICATIONS FUEL
SSTEM
HO RSEPO WER T Sync ro-Range Power SP i ft ENG I
N E Type
135 135
Type Filter
Direct inj ect on Two-stage with replaceable
mpregnated paper element. Inlet metering, dis tr
ibuting type Dry type, with safety element
6-cylinder, in-I ne, valve-in-head, diesel ,
turboch arged 4-1 /4 in. x 4-3/4 in. 404 cu.
in. 6.8 to 1 1-5-3-6-2-4 I ntake-0.018 in. Exh
aust-0.028 in.
I n jec tion pump type
Bore and stroke Displacement
Air cleaner COO LI NG SYSTEM
Compression ratio Firing order Valve clearance
Type . Pressurized with c entr if ugal pump
Heavy-duty th ermo stat s
Temperature control
CA PAC IT I ES Fuel tan k Cooling
system Crankcase (with filter change)
I n jection pump timing Eng ine Speeds Working
range Maximum transport speed Engine speeds Slow
idle 1900 rpm load 2200 rpm load 2500 rpm load
LU BRICATI ON SYSTEM
50 U.S. gals. 28 U.S. qts. 17 U.S. qts.
TDC
1500 to 2200 rpm 2500 rpm
Transm ission-hyd raulic system (add 4- /2 gals.
to capacity if eguipped with Power Front - Wheel
Drive)
8 00 rpm 2150 rpm idle 2400 rpm idle 2650 rpm
idIe Full pressurized
. 18 U. S. gals. . . 16 U.S. gals.
Syncro- Range Trans mission Power Shift
Transmission SY NC RO-RA NG E TRANS MI SSI ON
Type Clutch .
Syncro- Range, constant mesh .. 14-3/4 in. plate,
foot operated foot operated 8 forward and 2
reverse 4 stations, synchronized shifting wi thin
forward gears
with full-flow micron ic oil
filter, water cooled oil coo ler, and bypass
valves for fil ter and cooler. Factory observed
hp. measured at the PTO at 2200 engine rpm
Gear selec tions Shifting
L//ho in U.S.A.
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10 General 5-2 Specifications
Tractor - 4630 TM- 1030 (Apr-76)
POWE R SH I FT TRA NSM ISS ION
REARVVHEELTREAD 20.8-38 tire, regular axle 63 to
1 07-1/2 in. G ROU ND SP EE DS I N MI LES PER HOU
R (2200 en- gin e rpm and with 20.8-38 rear
tires)
Type
PIanetary gears, hydrau licalIy actuated wet disk
clutches and brakes 8 forward and 4
reverse HydraulIe, powershifting con- trolled by
speed selecto r
Gear selec tions Shifting
Power Shift
syncro- Range
Gear
2. 0 1.7
2nd 3. 1 2.5
3rd 3.8
4th 5.3 5.0
Sth 6.6 6.5
6th 8.7 8.5
7th 11.2 0. 9
8th 18.3 18.5
1 st reverse 4.0 2. 1
2nd reverse 6.4 3. 0
S r0 reverse 4. 7
4th reverse 6.3
PO WE R TAKE -O FF Type
Independent rear power take-off controlled by
hand-operated clutch lever
CIutch Sync ro- Range
One dry-dis k, hydrau - licalty actuated MuItiple
disk, wet cl utch hydrauIicalIy actuated 4 000 rpm
Power Shift
Speed (1900 engine rpm )
PTO ah ead of drawbar hitch point 16 in. HDRAU
LIC SYSTEM
POWER FRONT-WHEEL DR IVE
Type .
. Closed center, const an t pres- sure. I nc
ludes power steering, power brakes, implement co
n- trol , and transmission and different iaf I
ubr ination . 2250 psi Hydraulically power
actuated, dis k-type operating in oil Provis ion
for man ual opera- tion with brake accumulator to
supply oil. Full power, hydrostatic type.
Provision for manual operation.
Type
Hydraulic motor driven with plan- etary gear
reduction in wheel hub, uses pressure oil
from hydraulic system Low (series connec ted) and
high (parallel connected)
Toro ue
Standby pressure BRAKES
Solenoid ope rated control valves, synchronized
with transmission co n trols
. Hydraulic wet brake on ring gear releases when
drive is disengaged
Planetary disconnect .
DI MENS I ONS Wheel base (Su btract 1 inch for
tractors equ ipped with Power F ront- Wheel
Drive) Over-all length Over-all heigh t Height to
steering wheel Over-al I width Turn ing rad
ius Without Power Fron t-Wheel Drive (m inim um
tread and brakes appl ied) Power FronI-Wh eel
Drive (with drive engaged in "High
Torque, brakes applied and minimum wheel tread)
ST EERI NG
ELECTR I CA L SSTEM Type Batteries
4 06- 4 /4 in . 4 7 0-3/4 in . 4 06 in. 8 7 in
. 95- 7/8 in.
2-volt, negative grounded Two, 6-volt, 75-plate
172- ampere-hour, 3 EH type, connec ted in
series 12-volt, 55-amp, with
Alternator
integra! transistor ized regulator. Air
conditioned tractors have 12-volt, 72-amp
capacity. 1 0.00- 16, 6-ply 14.9-24,
6-ply 20.8-38, 10-ply
51 in.
FRONT TI RES
REAR TI RES
13 7 in.
Addiiion al tire sizes a vat/ab/e. FRONT WHEEL
TREAD 10.00- 16 lire 14.9 -24 tire
SHI PPI NG W El G HT (W ith equipment for average
field service, less fuel and ballast) 13,030 Ibs.
57-1 /2 to 83-1/4 in. 72 to 88 in.
Subtract 50 Ibs. if equipped with Syncro- Range t
r a n s m i s s i on. A d d 5 7 5 I b s . if eq
uipp ed w i th R oII Gar d . A d d 1, 000 I bs .
fo r Pow er F ro nt Wheel Drive.
(Specifications and design s ubect to ch ange
without notice.) Litho /'n U.S.A.
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General 10 Predelivery, Delivery, and After-Sale
Services 10-1
Tractor - 4620 TM- 1030 (Aug-70)
Group 1O PREDELIVERY, DELIVERY, AND AFTER-SALE
SERVICES PREDELIVERY SERVICE
Caplug before unloading tractor. Reinstall
Caplug before transporting the tractor to the
c,ustomer.
Because of the shipping factors involved, plus
ex- tra finishing touches that are necessary to
promote customer safisfaction, proper predelivery
service is of prime importance to the dealer.
After completing the factory-recommended dealer
checks and services listed on the predelivery
tag, remove the tag from the tractor and file it
with the shop order for the job. The tag will
certify that the tractor has received the proper
predelivery service when that portion of the
customer's John Deere De- livery Receipt is
completed.
A tag pointing out the factory-recommended pro-
cedure for predelivery service is attached to
each new tractor before it leaves the factory.
NOTE A Caplug is placed in the muffles outlet to
prevent turbocharger rotation during transit.
Remove
Temporary Tractor Storage
Service Specification Reference
Check radiator for coolant loss and antifreeze protection Reduce shipping pressure of tires . Cover tractor and tires for protec- tion and cleanliness . . . . . . . 2 inches above baffle. . . . . . . . . . . . . . . Operator's manual
Before Delivering Tractor
Electrical System
Install electrolyte and charge
batteries . FOS-20 Manual
Stamp date code on battery FOS-20 Manual
Gonnect alternator. Do not attempt
to polarize Section 40, Group 10
Connect Power Front-Wheel Drive
wiring harness at connector near
control valves Section 40, Group 5
Install light switch knob
Glean terminals and connect battery
cables Section 40, Group 5
Litho in U.S.A.
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10 General 10-2 Predelivery, Delivery, and
After-Sale Services
Tractor - 4620 TM- 1030 (A ug-70)
Before Delivering TractorContinued

Cooling System Inspect radiator for coolant loss .......... Check antifreeze protection Tires and Wheels Adjust pressure of tires Check front wheel hub bolts, rear wheel rim clamp nuts, and rear wheel retainer cap screws for tightness ............................ Lubrication Check crankcase oil level ............... Check transmission-hydraulic sys- tem oil level .......................... Lubricate grease fittings ................ Engine Check air cleaner . Fill fuel tank and start engine ........... Check operation of starter, alterna- tor, gauges, and indicator lights Check engine timing ................... Check engine speeds . Operation Check transmission clutch free travel (Syncro- Range transmission) Check engine disconnect clutch (Power Shift transmission) .............. Shift transmission through all speeds 2 inches above baffle Frong hub bolts - 100 ft-lbs Rear hub bolts - 300 ft-lbs Rim clamp nuts - 170 ft-lbs To upper rharks on dipstick. To top of SAFE" range on dipstick. Type 303 Special- Purpose Oil. SAE multipurpose-type grease. Capacity - 50 U.S. gallons TDC 800 rpm, slow idle speed 2650 rpm idle speed, 2500 max. transport speed Approximately 1-1/2-inch free travel (at least 3/4 in. ) . No tendency for tractor to creep with disconnect clutch disengaged. Operator's manual Operator's manual Operator's manual Operator's manual Operator's manual Operator's manual Operator's manual Section 30, Group 10 Section 30, Group 10 Operator's manual Section 50, Group 15 Operator's manual
Litho in U.S.A.
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7ractor - 4620 TM-1030 (Aug-70)
General 10 Predelivery, Delivery, and After-Sale
Services 10-3
Before Delivering TractorContinued
Speclflcatlon Reference
Check throttle linkage for free operation . Section 30, Group 10
Adjust headlights. Check operation of all lamps. Operator's manual
Check Power Front-Wheel Drive operation .. . Operator's manual
Check power takeoff operation Operator's manual
Check differential lock operation Operator's manual
Check brakes and accumulator. ......... 3 in. maximum travel for one emergency application immediately after stopping engine. Operator's manual
Check hydraulic system operation Rockshaft, steering, and remote cylinder Operator's manual
Check implement hitch operation Operator's manual
Check cab controls and seat operation . . Operator's manual
General
Tighten accessible nuts and cap screws ...
Clean tractor and touch up paint
DELIVERY SERVICE
The following procedure is recommended before the
serviceman and owner complete the delivery
acknowledgments portion of the delivery receipt.
A thorough discussion of the operation and
service of a new tractor at the time of delivery
helps to assure complete c ustomer satisfaction.
Proper d eli very should be an important phase of
a dealer's program. A portion of the John Deere
Delivery Receipt empha- sizes the importance of
proper delivery service.
Using the tractor operator's manual as a guide,
be sure that the owner understands these points
thor- oughly
Many complaints have arisen simply because the
owner was not shown how to operate and service
his new tractor properly. Enough time should be
devoted, at the customer's convenence, to
introducing the owner to his new tractor and
explaining to him how to operate and service it.

• Controls and instruments.
• How to start and stop the engine.
• The importance of the break-in period.
• How to use liquid or cast-iron ballast. 5. All
  functions of the hydraulic system.
• Using the power takeoff.
• The importance of safety.
• The importance of lubrication and periodic
  services.

IMPORTANT Install Caplug In muttler outlet it
transporting tractor to customer. This will
prevent damage to the turbocharger caused by alr
passing through the turbocharger and rotatlñg it
without lubri- cation when the enine Is stopped.
After explaining and demonstrating the above fea-
tures, have the owner sign the delivery receipt
and give him the operator's manual.
Litho in U.S.A.
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10 General 104 Predelivery, Delivery, and
After-Sale Services
Tractor - 4620 TM- 1030 (Aug-70)
AFTER-SALE INSPECTION
The purchaser of a new John Deere tractor is
enti- tled to a free inspection within the
warranty period after the equipment has been run
in". The terms of this after-sale inspection are
outlined on the back of the John Deere Delivery
Receipt.
If the recommended after-sale service inspection
is followed, the dealer can eliminate a needless
vol- ume of service work by preventing minor
irregulari- ties from developing into serious
problems later on. This will promote strong
dealer-customer relations and present the dealer
an opportunity to answer questions that may
have arisen during the first few days of
operation. During the inspection service, the
dealer has the further opportunity of promoting
the possible sale of other new equipment.
The purpose of this inspection is to make sure
that the customer is receiving satisfactory
performance from his tractor. At the same time,
the inspection should reveal whether or not the
tractor is being oper- ated, lubricated, and
serviced properly.
The following inspection program is recommended
within the first 100 hours of tractor
operation. Inspection Procedure
Speclficatlon Reference
Cooling System Check radiator coolant level . . Clean external surface of radiator core Check hoses and connections for leaks Fuel System Remove water and foreign matter from filter sediment bowl Bleed fuel system Tighten loose c'onnections and check entire system for leaks, correct if necessary Check air cleaner element and unloading valve. Clean element if necessary Electrical System Check specific gravity of battery(s) ....... Check level of battery electrolyte ......... Check fan belt tension ................. 2 inches above baffle
Cooling System Check radiator coolant level . . Clean external surface of radiator core Check hoses and connections for leaks Fuel System Remove water and foreign matter from filter sediment bowl Bleed fuel system Tighten loose c'onnections and check entire system for leaks, correct if necessary Check air cleaner element and unloading valve. Clean element if necessary Electrical System Check specific gravity of battery(s) ....... Check level of battery electrolyte ......... Check fan belt tension ................. Operator's manual
Cooling System Check radiator coolant level . . Clean external surface of radiator core Check hoses and connections for leaks Fuel System Remove water and foreign matter from filter sediment bowl Bleed fuel system Tighten loose c'onnections and check entire system for leaks, correct if necessary Check air cleaner element and unloading valve. Clean element if necessary Electrical System Check specific gravity of battery(s) ....... Check level of battery electrolyte ......... Check fan belt tension ................. Operator's manual
Cooling System Check radiator coolant level . . Clean external surface of radiator core Check hoses and connections for leaks Fuel System Remove water and foreign matter from filter sediment bowl Bleed fuel system Tighten loose c'onnections and check entire system for leaks, correct if necessary Check air cleaner element and unloading valve. Clean element if necessary Electrical System Check specific gravity of battery(s) ....... Check level of battery electrolyte ......... Check fan belt tension ................. Operator's manual
Cooling System Check radiator coolant level . . Clean external surface of radiator core Check hoses and connections for leaks Fuel System Remove water and foreign matter from filter sediment bowl Bleed fuel system Tighten loose c'onnections and check entire system for leaks, correct if necessary Check air cleaner element and unloading valve. Clean element if necessary Electrical System Check specific gravity of battery(s) ....... Check level of battery electrolyte ......... Check fan belt tension ................. Full charge 1.260 at 80 F. Operator's manual
Cooling System Check radiator coolant level . . Clean external surface of radiator core Check hoses and connections for leaks Fuel System Remove water and foreign matter from filter sediment bowl Bleed fuel system Tighten loose c'onnections and check entire system for leaks, correct if necessary Check air cleaner element and unloading valve. Clean element if necessary Electrical System Check specific gravity of battery(s) ....... Check level of battery electrolyte ......... Check fan belt tension ................. To bottom of filler neck in each cell. Operator's manual
Cooling System Check radiator coolant level . . Clean external surface of radiator core Check hoses and connections for leaks Fuel System Remove water and foreign matter from filter sediment bowl Bleed fuel system Tighten loose c'onnections and check entire system for leaks, correct if necessary Check air cleaner element and unloading valve. Clean element if necessary Electrical System Check specific gravity of battery(s) ....... Check level of battery electrolyte ......... Check fan belt tension ................. 1-inch deflection with a 25-
Cooling System Check radiator coolant level . . Clean external surface of radiator core Check hoses and connections for leaks Fuel System Remove water and foreign matter from filter sediment bowl Bleed fuel system Tighten loose c'onnections and check entire system for leaks, correct if necessary Check air cleaner element and unloading valve. Clean element if necessary Electrical System Check specific gravity of battery(s) ....... Check level of battery electrolyte ......... Check fan belt tension ................. pound force. Tractors with air conditioning, adjust belt 1-inch
Cooling System Check radiator coolant level . . Clean external surface of radiator core Check hoses and connections for leaks Fuel System Remove water and foreign matter from filter sediment bowl Bleed fuel system Tighten loose c'onnections and check entire system for leaks, correct if necessary Check air cleaner element and unloading valve. Clean element if necessary Electrical System Check specific gravity of battery(s) ....... Check level of battery electrolyte ......... Check fan belt tension ................. deflection, 20-pound force. Operator's manual
Litho in U.S.A.
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Tractor - 4620 TM-1030 (Auq-70)
Genere/ 10 Predolivery, Delivery, and Aher-Sale
Services 10-5
Inspection ProceduresContinued
6pecTTlcatTon
Start engine and check operation of starter, lights, Indicator lamps, and cab controls. Lubrication Check crankcase oil level ............... Check transmission-hydraulic system oil level ....................... Engine Check valve clearance ................. Check engine speed under load, fuel consumption, and horsepower ........... Clutches and Differential Lock Check transmission clutch free travel (Syncro-Range transmission) Check engine disconnect clutch (Power Shift transmission) .............. Shift transmission through all speeds Check Power Front-Wheel Drive operation Chech PTO clutch and brahe opera- tion Check differential lock operation Operator's manual
Start engine and check operation of starter, lights, Indicator lamps, and cab controls. Lubrication Check crankcase oil level ............... Check transmission-hydraulic system oil level ....................... Engine Check valve clearance ................. Check engine speed under load, fuel consumption, and horsepower ........... Clutches and Differential Lock Check transmission clutch free travel (Syncro-Range transmission) Check engine disconnect clutch (Power Shift transmission) .............. Shift transmission through all speeds Check Power Front-Wheel Drive operation Chech PTO clutch and brahe opera- tion Check differential lock operation To upper marks on dipstick. Operator's manual
Start engine and check operation of starter, lights, Indicator lamps, and cab controls. Lubrication Check crankcase oil level ............... Check transmission-hydraulic system oil level ....................... Engine Check valve clearance ................. Check engine speed under load, fuel consumption, and horsepower ........... Clutches and Differential Lock Check transmission clutch free travel (Syncro-Range transmission) Check engine disconnect clutch (Power Shift transmission) .............. Shift transmission through all speeds Check Power Front-Wheel Drive operation Chech PTO clutch and brahe opera- tion Check differential lock operation In "SAFE range on dipstick.
Start engine and check operation of starter, lights, Indicator lamps, and cab controls. Lubrication Check crankcase oil level ............... Check transmission-hydraulic system oil level ....................... Engine Check valve clearance ................. Check engine speed under load, fuel consumption, and horsepower ........... Clutches and Differential Lock Check transmission clutch free travel (Syncro-Range transmission) Check engine disconnect clutch (Power Shift transmission) .............. Shift transmission through all speeds Check Power Front-Wheel Drive operation Chech PTO clutch and brahe opera- tion Check differential lock operation Use John Deere Type 303
Start engine and check operation of starter, lights, Indicator lamps, and cab controls. Lubrication Check crankcase oil level ............... Check transmission-hydraulic system oil level ....................... Engine Check valve clearance ................. Check engine speed under load, fuel consumption, and horsepower ........... Clutches and Differential Lock Check transmission clutch free travel (Syncro-Range transmission) Check engine disconnect clutch (Power Shift transmission) .............. Shift transmission through all speeds Check Power Front-Wheel Drive operation Chech PTO clutch and brahe opera- tion Check differential lock operation Special-Purpose O il. Operator's manual
Start engine and check operation of starter, lights, Indicator lamps, and cab controls. Lubrication Check crankcase oil level ............... Check transmission-hydraulic system oil level ....................... Engine Check valve clearance ................. Check engine speed under load, fuel consumption, and horsepower ........... Clutches and Differential Lock Check transmission clutch free travel (Syncro-Range transmission) Check engine disconnect clutch (Power Shift transmission) .............. Shift transmission through all speeds Check Power Front-Wheel Drive operation Chech PTO clutch and brahe opera- tion Check differential lock operation IntaIe - 0.018 inch
Start engine and check operation of starter, lights, Indicator lamps, and cab controls. Lubrication Check crankcase oil level ............... Check transmission-hydraulic system oil level ....................... Engine Check valve clearance ................. Check engine speed under load, fuel consumption, and horsepower ........... Clutches and Differential Lock Check transmission clutch free travel (Syncro-Range transmission) Check engine disconnect clutch (Power Shift transmission) .............. Shift transmission through all speeds Check Power Front-Wheel Drive operation Chech PTO clutch and brahe opera- tion Check differential lock operation Exhaust - 0.028 inch
Start engine and check operation of starter, lights, Indicator lamps, and cab controls. Lubrication Check crankcase oil level ............... Check transmission-hydraulic system oil level ....................... Engine Check valve clearance ................. Check engine speed under load, fuel consumption, and horsepower ........... Clutches and Differential Lock Check transmission clutch free travel (Syncro-Range transmission) Check engine disconnect clutch (Power Shift transmission) .............. Shift transmission through all speeds Check Power Front-Wheel Drive operation Chech PTO clutch and brahe opera- tion Check differential lock operation Operator's manual
Start engine and check operation of starter, lights, Indicator lamps, and cab controls. Lubrication Check crankcase oil level ............... Check transmission-hydraulic system oil level ....................... Engine Check valve clearance ................. Check engine speed under load, fuel consumption, and horsepower ........... Clutches and Differential Lock Check transmission clutch free travel (Syncro-Range transmission) Check engine disconnect clutch (Power Shift transmission) .............. Shift transmission through all speeds Check Power Front-Wheel Drive operation Chech PTO clutch and brahe opera- tion Check differential lock operation Specification. Group 15 of this
Start engine and check operation of starter, lights, Indicator lamps, and cab controls. Lubrication Check crankcase oil level ............... Check transmission-hydraulic system oil level ....................... Engine Check valve clearance ................. Check engine speed under load, fuel consumption, and horsepower ........... Clutches and Differential Lock Check transmission clutch free travel (Syncro-Range transmission) Check engine disconnect clutch (Power Shift transmission) .............. Shift transmission through all speeds Check Power Front-Wheel Drive operation Chech PTO clutch and brahe opera- tion Check differential lock operation Section.
Start engine and check operation of starter, lights, Indicator lamps, and cab controls. Lubrication Check crankcase oil level ............... Check transmission-hydraulic system oil level ....................... Engine Check valve clearance ................. Check engine speed under load, fuel consumption, and horsepower ........... Clutches and Differential Lock Check transmission clutch free travel (Syncro-Range transmission) Check engine disconnect clutch (Power Shift transmission) .............. Shift transmission through all speeds Check Power Front-Wheel Drive operation Chech PTO clutch and brahe opera- tion Check differential lock operation Approximately 1-1/2 inch free
Start engine and check operation of starter, lights, Indicator lamps, and cab controls. Lubrication Check crankcase oil level ............... Check transmission-hydraulic system oil level ....................... Engine Check valve clearance ................. Check engine speed under load, fuel consumption, and horsepower ........... Clutches and Differential Lock Check transmission clutch free travel (Syncro-Range transmission) Check engine disconnect clutch (Power Shift transmission) .............. Shift transmission through all speeds Check Power Front-Wheel Drive operation Chech PTO clutch and brahe opera- tion Check differential lock operation travel. Operator's manual
Start engine and check operation of starter, lights, Indicator lamps, and cab controls. Lubrication Check crankcase oil level ............... Check transmission-hydraulic system oil level ....................... Engine Check valve clearance ................. Check engine speed under load, fuel consumption, and horsepower ........... Clutches and Differential Lock Check transmission clutch free travel (Syncro-Range transmission) Check engine disconnect clutch (Power Shift transmission) .............. Shift transmission through all speeds Check Power Front-Wheel Drive operation Chech PTO clutch and brahe opera- tion Check differential lock operation No tendency for tractor to
Start engine and check operation of starter, lights, Indicator lamps, and cab controls. Lubrication Check crankcase oil level ............... Check transmission-hydraulic system oil level ....................... Engine Check valve clearance ................. Check engine speed under load, fuel consumption, and horsepower ........... Clutches and Differential Lock Check transmission clutch free travel (Syncro-Range transmission) Check engine disconnect clutch (Power Shift transmission) .............. Shift transmission through all speeds Check Power Front-Wheel Drive operation Chech PTO clutch and brahe opera- tion Check differential lock operation creep with disconnect clutch
Start engine and check operation of starter, lights, Indicator lamps, and cab controls. Lubrication Check crankcase oil level ............... Check transmission-hydraulic system oil level ....................... Engine Check valve clearance ................. Check engine speed under load, fuel consumption, and horsepower ........... Clutches and Differential Lock Check transmission clutch free travel (Syncro-Range transmission) Check engine disconnect clutch (Power Shift transmission) .............. Shift transmission through all speeds Check Power Front-Wheel Drive operation Chech PTO clutch and brahe opera- tion Check differential lock operation disengaged. Section 50, Group 15
Start engine and check operation of starter, lights, Indicator lamps, and cab controls. Lubrication Check crankcase oil level ............... Check transmission-hydraulic system oil level ....................... Engine Check valve clearance ................. Check engine speed under load, fuel consumption, and horsepower ........... Clutches and Differential Lock Check transmission clutch free travel (Syncro-Range transmission) Check engine disconnect clutch (Power Shift transmission) .............. Shift transmission through all speeds Check Power Front-Wheel Drive operation Chech PTO clutch and brahe opera- tion Check differential lock operation Operator's manual
Start engine and check operation of starter, lights, Indicator lamps, and cab controls. Lubrication Check crankcase oil level ............... Check transmission-hydraulic system oil level ....................... Engine Check valve clearance ................. Check engine speed under load, fuel consumption, and horsepower ........... Clutches and Differential Lock Check transmission clutch free travel (Syncro-Range transmission) Check engine disconnect clutch (Power Shift transmission) .............. Shift transmission through all speeds Check Power Front-Wheel Drive operation Chech PTO clutch and brahe opera- tion Check differential lock operation Operator's manual
Start engine and check operation of starter, lights, Indicator lamps, and cab controls. Lubrication Check crankcase oil level ............... Check transmission-hydraulic system oil level ....................... Engine Check valve clearance ................. Check engine speed under load, fuel consumption, and horsepower ........... Clutches and Differential Lock Check transmission clutch free travel (Syncro-Range transmission) Check engine disconnect clutch (Power Shift transmission) .............. Shift transmission through all speeds Check Power Front-Wheel Drive operation Chech PTO clutch and brahe opera- tion Check differential lock operation Section 50, Groups 35
Start engine and check operation of starter, lights, Indicator lamps, and cab controls. Lubrication Check crankcase oil level ............... Check transmission-hydraulic system oil level ....................... Engine Check valve clearance ................. Check engine speed under load, fuel consumption, and horsepower ........... Clutches and Differential Lock Check transmission clutch free travel (Syncro-Range transmission) Check engine disconnect clutch (Power Shift transmission) .............. Shift transmission through all speeds Check Power Front-Wheel Drive operation Chech PTO clutch and brahe opera- tion Check differential lock operation 40
Start engine and check operation of starter, lights, Indicator lamps, and cab controls. Lubrication Check crankcase oil level ............... Check transmission-hydraulic system oil level ....................... Engine Check valve clearance ................. Check engine speed under load, fuel consumption, and horsepower ........... Clutches and Differential Lock Check transmission clutch free travel (Syncro-Range transmission) Check engine disconnect clutch (Power Shift transmission) .............. Shift transmission through all speeds Check Power Front-Wheel Drive operation Chech PTO clutch and brahe opera- tion Check differential lock operation Operator's manual
Litho in U.S.A.
12
10 Ganaral 10-8 Predelivery, Oelivery, and
After-Sale Services
Tractor - 4620 TM- 1080 (Aug 70)
Inspection ProceduresContined
6peciflcatlon Reference
Hydraulic System Check roc kshaft and remote cylin- der operation 3-point hitch negative stop adjust- ment ............................... Ch eck power steering .................. Check brakes and accumulator .......... Nuts and Cap Screws Tighten accessible nuts and cap screws that seem to require ad- justment Section 70, Group 30
Hydraulic System Check roc kshaft and remote cylin- der operation 3-point hitch negative stop adjust- ment ............................... Ch eck power steering .................. Check brakes and accumulator .......... Nuts and Cap Screws Tighten accessible nuts and cap screws that seem to require ad- justment 1/8th turn back out after con- tacting transmission case. Section 70, Group 30
Hydraulic System Check roc kshaft and remote cylin- der operation 3-point hitch negative stop adjust- ment ............................... Ch eck power steering .................. Check brakes and accumulator .......... Nuts and Cap Screws Tighten accessible nuts and cap screws that seem to require ad- justment Smooth, easy operation. Section 70, Group 20
Hydraulic System Check roc kshaft and remote cylin- der operation 3-point hitch negative stop adjust- ment ............................... Ch eck power steering .................. Check brakes and accumulator .......... Nuts and Cap Screws Tighten accessible nuts and cap screws that seem to require ad- justment 3 in. maximum travel for one emergency application immediately after stopping engine. Operator's manual
RECOMMENDED TORQUE TN FQOT-PQU NDS
Bolt Diameter Plain Head Three Radial Dashes Six RadlaT Daahes'
1/4 6 10 14
5/16 13 20 30
3/8 23 35 50
7/16 35 55 80
1/2 55 85 120
9/16 75 130 175
5/8 105 170 240
3/4 185 300 425
7/8 160 445 685
1 250 670 1030

• Tha types ol bolts and cap screws aro identiliad
  by head markings as follows
• Plain Head. regular machine bolts and cap screws.
• 8-Oash Head tempered steel high-strength bolts
  and cap screws.
• 6-Oesh Heed tempered steel exfra high-strength
  bolts and cap screws.

Litho in U.S.A.
13
Senarai 4 g Tune- Up 15-1
Tractor - 4620 TM- 1030 (Apr-76)
Group 15 TUNE -UP tion is satisfactory, proceed
with the tune-up. Choose from the following
procedures only those necessary to restore the
unit.
Betore tuning up a tractor, determine whether a
tune-up will restore operating efficiency. When
there is doubt, the following preliminary tests
will help to determine if the engine can be tuned
up. If the condi-
Preliminary Engine Testing
Operation Specification Section-G roup R ef ere nce
Dynamometer Test (at 220C engine rpm) ............ Compare with previous recorded output compare with output after tune-up. 450 psi at 130 rpm Normal bowby - 120-150 cu. ft. /hr. Excessive blow by - 200 cu. ft./hr. No air bubbles or oil film in radiator.
Compare with previous recorded output compare with output after tune-up. 450 psi at 130 rpm Normal bowby - 120-150 cu. ft. /hr. Excessive blow by - 200 cu. ft./hr. No air bubbles or oil film in radiator. FOS - 30 Manual,
Compare with previous recorded output compare with output after tune-up. 450 psi at 130 rpm Normal bowby - 120-150 cu. ft. /hr. Excessive blow by - 200 cu. ft./hr. No air bubbles or oil film in radiator. Chapter 12
Compression Test Compare with previous recorded output compare with output after tune-up. 450 psi at 130 rpm Normal bowby - 120-150 cu. ft. /hr. Excessive blow by - 200 cu. ft./hr. No air bubbles or oil film in radiator. FOS - 30 Manual ,
Compare with previous recorded output compare with output after tune-up. 450 psi at 130 rpm Normal bowby - 120-150 cu. ft. /hr. Excessive blow by - 200 cu. ft./hr. No air bubbles or oil film in radiator. Chapter 12
Vapor Flow Test (average engine Compare with previous recorded output compare with output after tune-up. 450 psi at 130 rpm Normal bowby - 120-150 cu. ft. /hr. Excessive blow by - 200 cu. ft./hr. No air bubbles or oil film in radiator.
condition and without turbo- Compare with previous recorded output compare with output after tune-up. 450 psi at 130 rpm Normal bowby - 120-150 cu. ft. /hr. Excessive blow by - 200 cu. ft./hr. No air bubbles or oil film in radiator.
charger blowby) Compare with previous recorded output compare with output after tune-up. 450 psi at 130 rpm Normal bowby - 120-150 cu. ft. /hr. Excessive blow by - 200 cu. ft./hr. No air bubbles or oil film in radiator. FOS - 30 Manual,
Compare with previous recorded output compare with output after tune-up. 450 psi at 130 rpm Normal bowby - 120-150 cu. ft. /hr. Excessive blow by - 200 cu. ft./hr. No air bubbles or oil film in radiator. Chapter 12
Engine Coolant Ch ec k Test Compare with previous recorded output compare with output after tune-up. 450 psi at 130 rpm Normal bowby - 120-150 cu. ft. /hr. Excessive blow by - 200 cu. ft./hr. No air bubbles or oil film in radiator.
Compare with previous recorded output compare with output after tune-up. 450 psi at 130 rpm Normal bowby - 120-150 cu. ft. /hr. Excessive blow by - 200 cu. ft./hr. No air bubbles or oil film in radiator. FOS - 30 Man u al,
Compare with previous recorded output compare with output after tune-up. 450 psi at 130 rpm Normal bowby - 120-150 cu. ft. /hr. Excessive blow by - 200 cu. ft./hr. No air bubbles or oil film in radiator. Chapter 12
Engine Tune-Up
Operation Operation Specification Section-Group Reference
Air Intake System Service air cleaner and check system for leaks Check system for restrictions using water manometer Normal reading (with clean filter elements) Maximum permitted reading Check restriction indicator light operation ............... Check manifold pressure ......... Exhaust System Check system for leaks Check muffler and exhaust pipe for restrictions Air Intake System Service air cleaner and check system for leaks Check system for restrictions using water manometer Normal reading (with clean filter elements) Maximum permitted reading Check restriction indicator light operation ............... Check manifold pressure ......... Exhaust System Check system for leaks Check muffler and exhaust pipe for restrictions FOS - 30 Manual,
Air Intake System Service air cleaner and check system for leaks Check system for restrictions using water manometer Normal reading (with clean filter elements) Maximum permitted reading Check restriction indicator light operation ............... Check manifold pressure ......... Exhaust System Check system for leaks Check muffler and exhaust pipe for restrictions Air Intake System Service air cleaner and check system for leaks Check system for restrictions using water manometer Normal reading (with clean filter elements) Maximum permitted reading Check restriction indicator light operation ............... Check manifold pressure ......... Exhaust System Check system for leaks Check muffler and exhaust pipe for restrictions Chapter 12
Air Intake System Service air cleaner and check system for leaks Check system for restrictions using water manometer Normal reading (with clean filter elements) Maximum permitted reading Check restriction indicator light operation ............... Check manifold pressure ......... Exhaust System Check system for leaks Check muffler and exhaust pipe for restrictions Air Intake System Service air cleaner and check system for leaks Check system for restrictions using water manometer Normal reading (with clean filter elements) Maximum permitted reading Check restriction indicator light operation ............... Check manifold pressure ......... Exhaust System Check system for leaks Check muffler and exhaust pipe for restrictions FOS - 30 Man uaI
Air Intake System Service air cleaner and check system for leaks Check system for restrictions using water manometer Normal reading (with clean filter elements) Maximum permitted reading Check restriction indicator light operation ............... Check manifold pressure ......... Exhaust System Check system for leaks Check muffler and exhaust pipe for restrictions Air Intake System Service air cleaner and check system for leaks Check system for restrictions using water manometer Normal reading (with clean filter elements) Maximum permitted reading Check restriction indicator light operation ............... Check manifold pressure ......... Exhaust System Check system for leaks Check muffler and exhaust pipe for restrictions Chapter 12
Air Intake System Service air cleaner and check system for leaks Check system for restrictions using water manometer Normal reading (with clean filter elements) Maximum permitted reading Check restriction indicator light operation ............... Check manifold pressure ......... Exhaust System Check system for leaks Check muffler and exhaust pipe for restrictions Air Intake System Service air cleaner and check system for leaks Check system for restrictions using water manometer Normal reading (with clean filter elements) Maximum permitted reading Check restriction indicator light operation ............... Check manifold pressure ......... Exhaust System Check system for leaks Check muffler and exhaust pipe for restrictions 11 in. of water at 2200 rpm
Air Intake System Service air cleaner and check system for leaks Check system for restrictions using water manometer Normal reading (with clean filter elements) Maximum permitted reading Check restriction indicator light operation ............... Check manifold pressure ......... Exhaust System Check system for leaks Check muffler and exhaust pipe for restrictions Air Intake System Service air cleaner and check system for leaks Check system for restrictions using water manometer Normal reading (with clean filter elements) Maximum permitted reading Check restriction indicator light operation ............... Check manifold pressure ......... Exhaust System Check system for leaks Check muffler and exhaust pipe for restrictions 25 in. of water at 2200 rpm
Air Intake System Service air cleaner and check system for leaks Check system for restrictions using water manometer Normal reading (with clean filter elements) Maximum permitted reading Check restriction indicator light operation ............... Check manifold pressure ......... Exhaust System Check system for leaks Check muffler and exhaust pipe for restrictions Air Intake System Service air cleaner and check system for leaks Check system for restrictions using water manometer Normal reading (with clean filter elements) Maximum permitted reading Check restriction indicator light operation ............... Check manifold pressure ......... Exhaust System Check system for leaks Check muffler and exhaust pipe for restrictions 24-26 in. of water
Air Intake System Service air cleaner and check system for leaks Check system for restrictions using water manometer Normal reading (with clean filter elements) Maximum permitted reading Check restriction indicator light operation ............... Check manifold pressure ......... Exhaust System Check system for leaks Check muffler and exhaust pipe for restrictions Air Intake System Service air cleaner and check system for leaks Check system for restrictions using water manometer Normal reading (with clean filter elements) Maximum permitted reading Check restriction indicator light operation ............... Check manifold pressure ......... Exhaust System Check system for leaks Check muffler and exhaust pipe for restrictions 14.2-17.3 psi
Air Intake System Service air cleaner and check system for leaks Check system for restrictions using water manometer Normal reading (with clean filter elements) Maximum permitted reading Check restriction indicator light operation ............... Check manifold pressure ......... Exhaust System Check system for leaks Check muffler and exhaust pipe for restrictions Air Intake System Service air cleaner and check system for leaks Check system for restrictions using water manometer Normal reading (with clean filter elements) Maximum permitted reading Check restriction indicator light operation ............... Check manifold pressure ......... Exhaust System Check system for leaks Check muffler and exhaust pipe for restrictions FOS - 30 Manu al,
Air Intake System Service air cleaner and check system for leaks Check system for restrictions using water manometer Normal reading (with clean filter elements) Maximum permitted reading Check restriction indicator light operation ............... Check manifold pressure ......... Exhaust System Check system for leaks Check muffler and exhaust pipe for restrictions Air Intake System Service air cleaner and check system for leaks Check system for restrictions using water manometer Normal reading (with clean filter elements) Maximum permitted reading Check restriction indicator light operation ............... Check manifold pressure ......... Exhaust System Check system for leaks Check muffler and exhaust pipe for restrictions Chapter 12
Air Intake System Service air cleaner and check system for leaks Check system for restrictions using water manometer Normal reading (with clean filter elements) Maximum permitted reading Check restriction indicator light operation ............... Check manifold pressure ......... Exhaust System Check system for leaks Check muffler and exhaust pipe for restrictions Air Intake System Service air cleaner and check system for leaks Check system for restrictions using water manometer Normal reading (with clean filter elements) Maximum permitted reading Check restriction indicator light operation ............... Check manifold pressure ......... Exhaust System Check system for leaks Check muffler and exhaust pipe for restrictions FOS - 30 M anual,
Air Intake System Service air cleaner and check system for leaks Check system for restrictions using water manometer Normal reading (with clean filter elements) Maximum permitted reading Check restriction indicator light operation ............... Check manifold pressure ......... Exhaust System Check system for leaks Check muffler and exhaust pipe for restrictions Air Intake System Service air cleaner and check system for leaks Check system for restrictions using water manometer Normal reading (with clean filter elements) Maximum permitted reading Check restriction indicator light operation ............... Check manifold pressure ......... Exhaust System Check system for leaks Check muffler and exhaust pipe for restrictions Chapter 12

Litho in U.S. A
14
Tractor - 4620 TM-1030 (Apr-76)
10 General 15-2 Tune- Up
Engine Tune- UpContinued
Oper aTion Spec itication Section-G roup Reference
Crankcase Ventilating System Ch eck system for restr Actions Cooling System Clean grille screen , radiator co re, and oil cooler core Clean and flush system check thermostats Chec k press ure cap Cylinder Head and Valves Torque cylinder head cap screws Set valve clearance Diesel Fuel System Chec k fuel tank fo r water Chec k fuel pump press ure Change filter Service injection nozzles Injec tion Pump Service and check timing Adjust 1hrot tle linkage Lubrication system Check engine oil pressure Charging System Ch eck battery specific gravity Check battery water consump- tion and electrolyte level Clean battery, cables, and box Ch eck alternator belt tens ion Chec k alternator output Ch eck alternator regulated voltage Opening range 77 F. to 82 F. 6.25 tu 7.50 psi r elease pressure 130 ft-Ibs in sequence Intake - 0.0 8 in. Exhaust - 0.028 in. 3-1 /2 - 4-1/ 2 psi TDC 6 advance at 1900 rpm (no load) 2650 rpm idle speed, 2500 max. transport speed 215 0 rpm idIe speed, 1900 load speed 2400 rpm idIe speed, 2200 load speed 8 00 rpm, slow idIe speed 40 - 5 0 psi (J 900 rpm) 1.240 - .260 25 Ibs. at 1 in. belt deflection, 20 lbs at 1 in. deflection on air conditioned tractors. 45 amps at 13 to 15 volts (1 440 engine rpm) 65 amps at 13 to 15 volts (1440 engine rpm) on tractors wi th air condi tioning 14.2 - 14.6 vol ts (operating) FOS - 30 Manual , Chapter 12 20-30 20-30 20-30 20-10 20-10 30-1 0 30-1 0 30-10 30-10 30-1 0 30- 0 30-10 20-25 40-4 0 40-1 0 40-10 40-10 40-1 0 40-10
Litho in U.S.A.
15
General 10 Tune- Up 15-3
Tractor - 4620 TM-1030 (Apr-T6)
Engine Tune-U pContinued
Operation Specification Section-Group Reference
Starting System Chec k start-safety switch operation Chec k battery voltage when starting Chec k starter c urrent draw Check operation of alternator, oil pressure, and Power Shift transmission f ilter re- str iction indicator lights 40-15
Starting System Chec k start-safety switch operation Chec k battery voltage when starting Chec k starter c urrent draw Check operation of alternator, oil pressure, and Power Shift transmission f ilter re- str iction indicator lights Min. 9 volts (cran king) 4 0-15
Starting System Chec k start-safety switch operation Chec k battery voltage when starting Chec k starter c urrent draw Check operation of alternator, oil pressure, and Power Shift transmission f ilter re- str iction indicator lights Diesel - approx. 400 amps 40-15
Starting System Chec k start-safety switch operation Chec k battery voltage when starting Chec k starter c urrent draw Check operation of alternator, oil pressure, and Power Shift transmission f ilter re- str iction indicator lights 40-25
Final Engine Test
Operation Spedification Section-Group Reference
Dynamometer Test (at 2200 engine rpm) Compare with previous recorded output record for future use. FOS - 30 Manual, Chapter 12
Tractor Tune-U p
Operation Specification Section-Group Reference
Adjust Sy ncro- Range trans mission 1-1 /2 in. 6 in. travel 165 - 185 psi Max. of 15 psi less than pump 420 - 48 0 psi 3 in. max. for one emergency application immediately after stopping engine 35 ft-Ibs bac k-off to nearest hole 1/8 - 3/8 in.
clutch free travel 1-1 /2 in. 6 in. travel 165 - 185 psi Max. of 15 psi less than pump 420 - 48 0 psi 3 in. max. for one emergency application immediately after stopping engine 35 ft-Ibs bac k-off to nearest hole 1/8 - 3/8 in. 50-5
Check Power Shift transmission 1-1 /2 in. 6 in. travel 165 - 185 psi Max. of 15 psi less than pump 420 - 48 0 psi 3 in. max. for one emergency application immediately after stopping engine 35 ft-Ibs bac k-off to nearest hole 1/8 - 3/8 in.
disconnect lever operation 1-1 /2 in. 6 in. travel 165 - 185 psi Max. of 15 psi less than pump 420 - 48 0 psi 3 in. max. for one emergency application immediately after stopping engine 35 ft-Ibs bac k-off to nearest hole 1/8 - 3/8 in. 50-1 0
Transmission 1-1 /2 in. 6 in. travel 165 - 185 psi Max. of 15 psi less than pump 420 - 48 0 psi 3 in. max. for one emergency application immediately after stopping engine 35 ft-Ibs bac k-off to nearest hole 1/8 - 3/8 in.
Check shifting 1-1 /2 in. 6 in. travel 165 - 185 psi Max. of 15 psi less than pump 420 - 48 0 psi 3 in. max. for one emergency application immediately after stopping engine 35 ft-Ibs bac k-off to nearest hole 1/8 - 3/8 in. 50-15
Check for proper operation 1-1 /2 in. 6 in. travel 165 - 185 psi Max. of 15 psi less than pump 420 - 48 0 psi 3 in. max. for one emergency application immediately after stopping engine 35 ft-Ibs bac k-off to nearest hole 1/8 - 3/8 in.
without excessive noise 1-1 /2 in. 6 in. travel 165 - 185 psi Max. of 15 psi less than pump 420 - 48 0 psi 3 in. max. for one emergency application immediately after stopping engine 35 ft-Ibs bac k-off to nearest hole 1/8 - 3/8 in. 50-15 20
Power Shift transmission pump 1-1 /2 in. 6 in. travel 165 - 185 psi Max. of 15 psi less than pump 420 - 48 0 psi 3 in. max. for one emergency application immediately after stopping engine 35 ft-Ibs bac k-off to nearest hole 1/8 - 3/8 in.
pressure 1-1 /2 in. 6 in. travel 165 - 185 psi Max. of 15 psi less than pump 420 - 48 0 psi 3 in. max. for one emergency application immediately after stopping engine 35 ft-Ibs bac k-off to nearest hole 1/8 - 3/8 in. 50-20
Power Shift engaged element 1-1 /2 in. 6 in. travel 165 - 185 psi Max. of 15 psi less than pump 420 - 48 0 psi 3 in. max. for one emergency application immediately after stopping engine 35 ft-Ibs bac k-off to nearest hole 1/8 - 3/8 in.
pressure 1-1 /2 in. 6 in. travel 165 - 185 psi Max. of 15 psi less than pump 420 - 48 0 psi 3 in. max. for one emergency application immediately after stopping engine 35 ft-Ibs bac k-off to nearest hole 1/8 - 3/8 in.
Chec k diff er ential lock operation 1-1 /2 in. 6 in. travel 165 - 185 psi Max. of 15 psi less than pump 420 - 48 0 psi 3 in. max. for one emergency application immediately after stopping engine 35 ft-Ibs bac k-off to nearest hole 1/8 - 3/8 in. 50-25
Check brake pedal travel and 1-1 /2 in. 6 in. travel 165 - 185 psi Max. of 15 psi less than pump 420 - 48 0 psi 3 in. max. for one emergency application immediately after stopping engine 35 ft-Ibs bac k-off to nearest hole 1/8 - 3/8 in.
even position 1-1 /2 in. 6 in. travel 165 - 185 psi Max. of 15 psi less than pump 420 - 48 0 psi 3 in. max. for one emergency application immediately after stopping engine 35 ft-Ibs bac k-off to nearest hole 1/8 - 3/8 in.
1-1 /2 in. 6 in. travel 165 - 185 psi Max. of 15 psi less than pump 420 - 48 0 psi 3 in. max. for one emergency application immediately after stopping engine 35 ft-Ibs bac k-off to nearest hole 1/8 - 3/8 in. 70-25
Check front wheel bearing ad- 1-1 /2 in. 6 in. travel 165 - 185 psi Max. of 15 psi less than pump 420 - 48 0 psi 3 in. max. for one emergency application immediately after stopping engine 35 ft-Ibs bac k-off to nearest hole 1/8 - 3/8 in.
justment and lubrication 1-1 /2 in. 6 in. travel 165 - 185 psi Max. of 15 psi less than pump 420 - 48 0 psi 3 in. max. for one emergency application immediately after stopping engine 35 ft-Ibs bac k-off to nearest hole 1/8 - 3/8 in.
Check front wheel tow-in 1-1 /2 in. 6 in. travel 165 - 185 psi Max. of 15 psi less than pump 420 - 48 0 psi 3 in. max. for one emergency application immediately after stopping engine 35 ft-Ibs bac k-off to nearest hole 1/8 - 3/8 in.
Chec k tire inflation 1-1 /2 in. 6 in. travel 165 - 185 psi Max. of 15 psi less than pump 420 - 48 0 psi 3 in. max. for one emergency application immediately after stopping engine 35 ft-Ibs bac k-off to nearest hole 1/8 - 3/8 in. Operators man ual
Litho in U.S.A.
16
10 Genera/ 15-4 Tune- Up
Tractor - 4620 7/\4- /O30 (Apr-76)
Tractor Tune-UpContinued
Operation SpeciT ica tion Section-G roup Reference
Chec k Power Front-Wheel Drive operation Transmission pum p Main hydraulic pump Pressure control valve Roc k shaft Lift cycle time (75 degrees rotation) Maximum oil flow Lever position (depth control) Lever position (load control) Negative stop adjustment Selec tive control valve Power Front-Wheel Drive pressure control 504 5
Chec k Power Front-Wheel Drive operation Transmission pum p Main hydraulic pump Pressure control valve Roc k shaft Lift cycle time (75 degrees rotation) Maximum oil flow Lever position (depth control) Lever position (load control) Negative stop adjustment Selec tive control valve Power Front-Wheel Drive pressure control 9 gpm at 19 00 rpm - Syncro-Range 705
Chec k Power Front-Wheel Drive operation Transmission pum p Main hydraulic pump Pressure control valve Roc k shaft Lift cycle time (75 degrees rotation) Maximum oil flow Lever position (depth control) Lever position (load control) Negative stop adjustment Selec tive control valve Power Front-Wheel Drive pressure control 12 gpm at 19 00 rpm - Power Shift
Chec k Power Front-Wheel Drive operation Transmission pum p Main hydraulic pump Pressure control valve Roc k shaft Lift cycle time (75 degrees rotation) Maximum oil flow Lever position (depth control) Lever position (load control) Negative stop adjustment Selec tive control valve Power Front-Wheel Drive pressure control Standby - 2200 - 2300 psi (2300 70-5
Chec k Power Front-Wheel Drive operation Transmission pum p Main hydraulic pump Pressure control valve Roc k shaft Lift cycle time (75 degrees rotation) Maximum oil flow Lever position (depth control) Lever position (load control) Negative stop adjustment Selec tive control valve Power Front-Wheel Drive pressure control psi for Power Front-Wheel Drive)
Chec k Power Front-Wheel Drive operation Transmission pum p Main hydraulic pump Pressure control valve Roc k shaft Lift cycle time (75 degrees rotation) Maximum oil flow Lever position (depth control) Lever position (load control) Negative stop adjustment Selec tive control valve Power Front-Wheel Drive pressure control Capacity - 22 gpm (2000 psi and 1900
Chec k Power Front-Wheel Drive operation Transmission pum p Main hydraulic pump Pressure control valve Roc k shaft Lift cycle time (75 degrees rotation) Maximum oil flow Lever position (depth control) Lever position (load control) Negative stop adjustment Selec tive control valve Power Front-Wheel Drive pressure control
Chec k Power Front-Wheel Drive operation Transmission pum p Main hydraulic pump Pressure control valve Roc k shaft Lift cycle time (75 degrees rotation) Maximum oil flow Lever position (depth control) Lever position (load control) Negative stop adjustment Selec tive control valve Power Front-Wheel Drive pressure control 1650 - 1700 psi at 800 rpm (appro xi -
Chec k