Ford NAA Tractor Owners Manual Instant Download (Publication No.42881007)

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OWNERS
Model NAA
42881007 Reprint
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(No Transcript)
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GEN ERA L DESCRIPTION
0 PER A TING YOU R NEW TR A CTO R STEER IN G, WH
EELS, TIRES AND B RAK ES ENGINE, CLUTCH ND GOV E
RNOR
TRACTOR
OWNER'S
MANUAL
COO LI NG SY STEM ELECTR ICA L SYSTEht FU E
L HY DRAU LIC SYSTEM TROUBLE SHOOTING AND
STORAGE
PUBLISH ED BY FO 9D 18 A CI OR 0 iV IION FOeD
MOTOR COMPANY r oR M sE 59 a s 1560 Jon g 5 x
FORO MOTOR COMPAHY ozxaeoxH, vicmcxu
IrHO IN U 0 A.
4
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CONTE NTS
A -Adjusting the Touch Contr ol Leve r . 68
Alignment ot Distributor Shaft
O -Oil Change Pe r iods ........... 83 Oil Fil te
r.................... 82 Ope rating T rac tor
in Constant Draft Control ..... 67 Ope rating
Tractor in Position Control ...................
66 Operational Complaints ....... 55
With Oil Pump Shaft .......... 58 Ammeter
...................... 12 Anti - Freeze Charts
............. 50 B-Battery Service
................. 52 Before Plactng Your
New Tractor in Operation.......... 11 Brake Ad)
ustment ............... 35 Brakes ...
.................... 17 C -Carburetor A djust
ment .......... 61 Carburetor A ir Cleaner
......... 62 Carburetor Air Cleaner Oil Cup . .
83 Checking Battery Electrolyte - .... 51 Choke
Control .................. 12 Cleaning tlïe
Cooling System ..... 48 Cleaning the Sediment
Bulb ...... g4 Clutch Ad ustment ..............
41 C1utch Pedat ................... 15 Constant
Draft and Position Control Lever................
18 Cooling System ................. 45 Cooling
System Protection ....... 49 C r ankc ase Oil
Level Dipstlck .... 84 C r ankcase Ventilation
........... 82 D-Description and
Specifications.... s Distributor ........ ..
........ 52 Distributor Centrifugal Advance. . .
58 Draining the Cooling System ..... 49 Drawbar
Stays.................. 19 E -Engine Oil Pressure
Gauge ...... 12 Engine Speed Control Governor...
41 Engine Temperature Gauge ...... 12 Engine Tune
-Up Operations ...... 43 F- Fan and Generator
Belt A dj ust ment. 46 Front Wheel Bearing
Adjustment . 30 Front Wheel Toe - In
............. 30 Front Wheel Tread Adjustment ...
29 Fuel Shut -Off Valve ............. 13 Fuel
Tank Service .............. 63 H-Hood Removal
.................. 37 Hydra ulic Control
Adjustments ... 67 Hydraulic C ntr Ols.......
....... 65 Hydraulic System Description ....
4 Hydraulic System Oil............ 84 Hy-Trol
Valve.................. 68 1-Ignition Switch
................. 1i Installing and Adjusting
Ignition Points...... . ..... .......
54 Installing Tires............... .
34 L-Leveling Crank ................ 18 Lime or
Alkali Con 3itioner ...... 49 Lubrication
................... 81 Lubrication Chart
.......... 86 87 M-Maintaining Eand T lrottle
Lever Position ....... , ............. 43
P -Powe r Take -Otf A dapter ...... 20 Power Take
-Oft Ope r ation..... 19 Preparing T ractor for
Storage.. 85 R -Radiator Pressure Cap........ 45
Reading Belt Pulley Speed ..... 22 Reading Engine
Hours Operated . 24 Reading Engine Spee d ..
.... . 21 Reading Power Take -Off Speed.. 21
Reading Proof - Meter.......... 20 Reading
Tractor Ground Speed .. 21 Rear Wheel Tread A dj
ust ment .. 31 Recommended Use of Draft Control
and Positlon Con - trol When Operating Dearborn
Imple ments .. .. . . . . 70
Re moving Ignition Points ...... 54 Removing
Tractor From
Storage ................... 85
S-Safety ......... ............. 25
Setting Basic Ignition Timing .. 56 Setting
Governed Engine Speed . . 42
Setting Ignition Timing With Timing Light
.............. 58 Shifting Gears................
16 Spark Plugs............. ..... 59 Starting the
Engine......... , .. 13 Steering Gear Adjustment
..... 29 Steering Syste m ..............
27 Stopping the Engine ........... 15 Swinging
Drawbar............. 19 T-Tappet Adjustment Chart
...... 39 Temperature Gauge........... 46 Ther
mostat Checking and Replacement .....
........ Tightening Cylinder Head Cap Screws ..
..... , . .... ..... 40 Tire Loads .........
........ 32 Tire Removal ........ ........
33 Tire Slippage ........ .. .... 31 Touch
Control Lever...... 17 66
Tractor Ground Speed .. . .. 16 Trouble Shooting
............. 76
V-Valve Adjustment .. . . 37 Valve Grinding
..... . ..... 40
W-Warming Up the Engine and
Hydraulic Pump ........... 14
Water Pump Operation ........ 46
Wheel Weight ................ 32
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INTRODUCTION
This manual has been prepared to assist you in
the daily care and operation of your Model NAA
Ford Tractor. The manual iS div- ided into
several sections. The section index on each
title page in- dicates the subject covered in
that section. The design of your tractor is the
result of many years of engin- eering and
research by the Ford Motor Company. The finest
develop- ment methods and equipment available
were used in the development of your tractor.
Every care has been exercised in the design,
selection of materials and in manufacture to
provide satisfactory service and economical
operation over a long period of time. Every
tractor is caref ully inspected before leaving
the factory. A pre -delivery inspection is also
made by your dealer prior to del- ivery. How
long or how well your tractor continues to give
satis- factory service depends upon the care it
receives. Engineering and manufactur ing
ingenuity can never compensate for tractor abuse
in the hands of the operator. It is the owner's
responsibility to establish regularly scheduled
service periods in accordance with the hours
shown on the Proof -Meter , as recommended in
Section 10 of this manual. Have your dealer
inspect the tractor at leaat twice yearly. His
factory trained technic ians , using scientific
instr ume nts . are equipped to render the kind
of service it takes to keep your tractor running
in top condition. When service work is
performed, always insist on gen- uine Ford
Tractor repair parts.
FORD TRACTOR DIVISION FORD MOTOR COMPANY SERVICE
DE PARTMENT BIRMINGHAM, MICHIGAN
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Figure 2 NAA Ford Tractor - 3/4 Rear View
9
General Description and Specilìcations
Model NAA
Section J
NAA F ord Tractor- Sectional View
Figure 3
10
Genera/ Description and Specifications
Model NAA
Section 1
GENERAL DESCRIPTION AND SPEIFIATI0NS The Model
NAA Ford tractor is of the four wheel type and is
powered by an overhead valve four cycle, four
cylinder gasoline engine. The adjustable front
axle provides front wheel tread spacings to meet
various field crop work conditions. Rear wheel
tread is also adjustable by changing the position
of the steel disks and the rims. The conventional
heavy duty, single plate, dry disc cl utch pro-
vides the means of engaging or disengaging the
engine power I rom the tr ansmis sion. In various
type s of field work and under heavy loading
conditions, it is necessary to have various
engine speeds in relation to tractor speed. This
is accomplished by manually selecting the correct
re- duction gearing in the four forward speed c
onstant mesh type trans- mission bef ore the
tractor is set in motion. The rear axle is
supported by tape red roller bearings at each
wheel and is of the semi -floating type. Final
drive incorporates heavy duty spi ral be vel
gears and a four pinion differential. The
differential iS the mechanism that equalizes
power at the rear wheels by p-r mittinp one
wheel to turn faster or slowe r than the
other. Each re ar wheel is equipped with
mechanically operate d in- ternal expanding, self
ene rgizing type brake s, independently
operated. The hydraulic system incorporates
design features that assure dependability and
positive control of implements, The externally
mounted hydraulic pump is driven by a gear on
rear of engine cam- shaft. This pump keeps the
syste m supplied with oil to assure instant c
ontrol of implements after setting the selector
and touch control levers. The power take - off
lever is located on the left s ide of the center
housing. This is used to enga or disengage the
power take -off from the transmission shaft. The
power take -off shaft,in turn,provides a dr ive f
or implement s and a belt pulley is available at
extra cost.
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11
General DescriR' OEtd Specifications
Model NAA
Section J
A. GENERAL SPECIFICATIONS
4 Wheel gene ra1 purpose i3 7/8 inches at 48
tread
Type Wheelbase Over -all length, f ront
to drawbar Over -all height Over -all width,
normal tread Tire size Front-standard
118 7/8 inches 57 1/4 inches
64 3/4 inc hes
4-19 - 4 ply or 4. 00 X 19 - 4 ply or 5. 50 X 16
- 4 ply extra cost 10 X 28 48 to 76 inches 48 to
76 inches
Rear -standard Front tread Rear tread Ground
Clearance Front axle Rear axle Center Turning
circle radius (with use of brakes) Made by outer
f ront wheel Made by centerline of tractor at re
ar axle Shipping weight (including
21 inches 21 inches 13 inches
8 ft. 10 in.
3 ft. 0 in.
oil, water, tires, -less gas) 2550 lbs.
Drawbar he ight
8 1/ 2 in, to 34 1/4 in. 18 in. std. setting
B. CA PACITIES - U.S. MEASURE
11 gallons total-1 J4 gallons re serve
Fuel Tank Engine Oil Pan (less filter
absorption) 2ransmission Hydraulic lift Diffe
rential Cooling system Oil bath air cleaner Belt
pulley Assy. Tire pressure 10-28 4 -ply 4-19
4-ply 5. 50 -16 4 -ply
5 qts. With filter add extra qt. 5 qts. 8. 0
qts. 8, 5 qts. 15 qts. 1. 3 pipt s 0. 9 pints
P.S.I. 12 28 28
C. SNGINE Type
4 C blinder, in-line, overhead valve
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Model NAA General Oescriprion and
Specifications C. ENGINE (Con t)
Section T
Rated speeds
1500 R. P. M. with P. T. 0. driven implements
so as to obtain 545 R. P. M. at P. T. 0. 1750 R.
P. M, without P. T. 0, driven implements 450-475
R. P. M. 3. 4375 in. 3. 60 in. 134 cu, in. 110
ft. lbs, at 1400 R.P.M. - Engine without
accessories 6. 6 to 1 Centrif ugally cast alloy
iron, dry type Autothermic, cam ground, aluminum
alloy
Refer to Page 10 for Belt and Pulley Speeds
Idle speed Cylinder bore Stroke Piston
displacement Torque
Compression ratio Sleeves
Piston
Rings Compression
2 - cast iron - top, chrome plated 1 - cast
iron Floating Replaceable steel backed inserts
Replaceable steel backed inserts Precision
moulded alloy iron, statically dynamically
balanced. (sea level) 120-125 P. S. I, at
cranking speed (Minimum)
Oil Piston pins Rod Bearings Main Bearings
Crankshaft
Compression pressure at cranking speed
D. IGNITION SYSTE M
Type Distributor Firing order Drive
Battery
1-2-4-3 Helical gear off c amshaft
Automatic spark advance Centrifugal Initial
timing (degrees
of crankshaft) Maximum advance (degrees of
crankshaft) Distributor breaker cam B reake r
contacts Breaker contact spacings Spark Plugs
Type
8 BTDC at 475 R. P. M.
29 to 31 4 lobe 1 set
. 024 to . 026
H-10
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Model NAA
Section 1 General Description and
Sperifirofions p. IGNITION SYSTE M (Con' t)
Size Gap
14 tnm . 025 - . 028
E. CARBURETOR
Single up -draft 1 turn open 1 1/4 turn
open Screw on throttle shaft
Type Idle fuel adjustment Main fuel jet
adjustment Idle speed adjustment
F. GOVERNOR
Type
Variable Speed Centrifugal Fly- ball Mounted
Direct to Crankshaft 800 - 2200 R. P. M. No Load
Governed speed range Maximum governed
speed adjustment
Stop clamp on throttle rod
G. COOLING SYSTE M
Radiator cap Pressure valve opens Vacuum valve
opens Capacity Water pump Type Drive Coolant ftow
Pressure type 3. 5 to 4. 5 P. S. I. 1 P. S. I. 15
qts.
Centrifugal Y-belt 20 gal. per minute at 170 F.
at 2000 R. P. M.
Fan Type Drive
4 blade unequal spac Ing puH Same belt drives
water pump and generator
Thermostat Location Starts to open Fully open
Engine water outlet 157-162 deg. F. 177-182 deg.
E'.
H. ELECTRICAL SYSTEM
Generator Type Drve Rating 1650 R. P. M. (hot)
2 brush shunt V-belt
20 amps
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Model NAA Generol Description and
Specif?cofions H. ELECTRICAL SYSTEM (Con't)
Section 1
Maximum output Capacity Generator regulator
Cutout closing voltage Voltage limiter Cutout
opening current (Reverse) Battery Type Number of
plates (per cell) Capacity in ampere
hours Terminal grounded Starting motor Type Drive
20 amps 160 watts
6. 0 - 6. 6 volts 7. 1 - 7. 5 volts
6 amps. max.
6 volt
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80 Positive
6 volt Follow Thl ough Type
I. TRANSMISSION
Type Number of spee ds forward
Constant Mesh 4
Without Slip Axle Gear Ratio 16. 66) Without Slip Axle Gear Ratio 16. 66) Trans - mission Total Gear Reduction (Over all) Total Gear Reduction (Over all) Total Gear Reduction (Over all) Speed in M. Speed in M. Speed in M. P. H. P. H.
Without Slip Axle Gear Ratio 16. 66) Without Slip Axle Gear Ratio 16. 66) Trans - mission Total Gear Reduction (Over all) Total Gear Reduction (Over all) Total Gear Reduction (Over all) 1500 RPM 1750 RPM 1750 RPM 2000 RPM 2000 RPM
1. Low (first) 1. Low (first) 11. 00 to 1 73. 33 to 1 2. 68 3. 13 3. 13 3. 58 3. 58
2, flowing (sec ond) 8. 55 to 1 57, 04 to 1 3, 45 4. 02 4. 02 4. 60
3. C ultivating (third) 3. C ultivating (third) 6, 21 to 1 41, 45 to 1 4, 75 5. 54 6. 33 6. 33
4. High (fourth) 4. High (fourth) 2. 98 to 1 19. 86 to 1 9, 9 11. 55 13. 2 13. 2
5. Reverse 5. Reverse 10, 04 to 1 66. 8 to 1 2. 96 3, 45 3, 45 3, 96 3, 96
J. CLUTCH Type Release bearing (pre
- lubricated) Pedal free travel
Single plate
Ball bearing 3/4 inch
K. REARAXLE Type Ratio
Semi -floating 6. 66 to 1
15
General Description and Specificofions
Model NAA
Section I
Type Control Adjustment at each wheel Brake pedal
free play Thickness ot lining Width of lining
Length of lining Total brake lining area (two
wheels)
Internal expanding Individual mechanical Brake
adjusting screw 3/4 inch . 187 inch 2. 000
inch 12. 48 inch
99. 84 sq, inch
M. STEERING GEAR
Type Ratio, turns of steering wheel for total
travel of pitman arms at 48 inch wheel
tread Steering wheel diameter
Recirculating ball nut
2. 25 18 inches
N. HYDRAULIC CONTROL
Type Maximum pressure Pump Type Drive Capacity R
anges from Control Oil supply
Servo control 1750 - 2000 lbs. per sq. in.
Balanced vane Gear on engine camshaft
. 4 to 4. 8 G. P. M. Manual and automatic 2 gals.
0. POWER TAKE -OFF ADAPTER (Extra Cost)
1-3/8 std.
Spline P. T. 0. output speed at 1500 engine R.
P. M.
545 R. P. M.
P. BELT PULLEY (Extra Cost)
Pulley speed (2000 engine R. P. UL ) Belt speed
(2000 engine R, P, M. ) Pulley size (standard)
1358 R. P. M.
3199 ft/min. 9 in, dia.
10
16
OPERATING YOUR NEW TRAT0R
Model NAA Operating Your New Tractor

• BF0RE PLACING THE NEW TRACTOR IN OPERATION
• Make sure thefunction of each control and
  instrument is thoro- ughly understood before
  attempting to drive your new tractor. Ex- amine
  your new trac for carefully before putting it
  into operation.
• 00LItiG S7STfiV
• Remove the radiator filler cap and check the
  coolant level. In winter this requires an anti
  -freeze compound added to the coolant in the
  amount shown in the chart in Section 5, and in
  summer a rust inhibitor in the amount shown on
  the container.
• LUBRICATION
• Pull out the crankcase oil level dip stick and
  compare the oil level with the markings on the
  stlck. Replenish the oil if necessary to bring
  it to the full mark using the proper grade of
  oil, Make eertain the hydraulic system, rear
  axle, and transmission are tull of the
  recommended seasonal lubricant. Your tractor is
  lubricated at the factory and also by the dealer.
  Each lubrication point should be in- spected by
  the owner before placing it into operation. (See
  Lubri- cation Section 10 Figure 68 and 69)
• IGNITION SWITCH
• The ignition switch is located on the lower left
  corner of the instrument panel just below the
  side panel. Turn the key clockwise

THROTTLE LEVER TENS ON ADJUSTING HUT Figure 4
Carburetor Eand Throttle Control
17
Section 2
Operating Your New Trorfor Model NAA
to turn the ignition on and counter -clockwise to
turn it off. EHOWECONTROi
The hand throttle control,
loc ated below the steering wheel,
opens and closes the carburetor throttle valve,
Maximum engine
speed is controlled by the action of the
adjustable centrif ugal governor located on the
forward end of the c rankshaft as shown in Figure
38. ENGINE TEMPERATURE GAUGE AMMETER OIL
PRESSURE GAUGE

THROTTLE LEVER
CHOKE COHTROL
' SHIFT LEVER BRAKE PEDALS
STARTING BUTTON ,/
.
/. tt
CLUTCH PEDAL
CHOKE CONTROL Pulling on the choke control rod
button closes the choke control valve in the
carburetor. This enriches the fuel air mixture
in the carburetor. The initial starting ot the
engine may require the use ot the choke. After
the engine is warmed up sufficiently, the
choke control should be returned to normal as
soon as possible. Continued use of the choke
wastes fuel and dilutes the oil in the crankcase.
Stop- ping the engine with the choke is
detrimental because raw gasoline enters
thecombustion chamber and washe s the oil film
from the eyl- linder walls. Without the benefit
of the oil film, engine malfunctioning, abnormal
wear and consequently Short engine life may res
ult. The engine oil pressure gauge indicates
oil pressure reaching the bearings, but does not
show the amount of oil in the crankcase. Oilin
the crankcase can become dangerously low and
still show pres-
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Model NAA Operating Your New 7rortor Section
2 sure on the gauge. After the engine has
reached normal operating temperature, the oil
pressure gauge should read at least 40 pounds
pressure at 1500 revolutions per minute, and not
less than 8 to 10 pounds at engine idle speeds
(450 R. P. M. ). Oil is thick when cold,
therefore, oil pressure will be higher than
normal when the engine is cold. As engine speed
increase a, the oil pressure will increase until
the regulator valve opens, and decreases when
engine speed is decreas- ed. Periodic visual
checks of the oil pressure gauge should become
habitual when operating your tractor, so that you
know whether the lubricating system is operating
satisfactorily. ENWND TDMPRATURSGAUGD The
temperature gauge is for the protection of the
englne. When the pointer registers in the green
block, the engine temperature is normal.
Operating the engine with the temperature gauge
pointer in the red block is dangerous because the
engine is running in an over- heated condition.
Operating the engine in the orange block is also
detrimental to engine life, because it is
operating too cold. For further information on
the temperature gauge, Fefer to Section
5. AMMEIR The ammeter indicates whether the
current is flowing into or out of the battery.
Theammeter will register a low charge rate when
the battery is fully charged, and show a high
charge rate when the battery is in need of
charging. The amount of current entering the
battery is controlled by the action of the
generator regulator. If the ammeter registers
discharge when the engine is running at normal
speed, either the generator, regulator, or
ammeter are at fault and your dealer should be
consulted to correct the trouble. FUEL SHUT-OFF
VALE The fuel shut-off valve is located at the
right rear under side of the fuel tank adjacent
to the battery. The valve is turned to the right
(clockwise) to shut off the fuel supply to the
carburetor. Opening the valve two turns allows
the main fuel s upply to flow to the carburetor.
One and three quarters gallons of fuel, called
the reserve supply, can not be used with the
valve in this position. Turn the valve to full
open JiOSition (counter -clockwise) to use the
reserve supply. 8TARTINGTHEENGINE E very day bef
ore initially starting the engine , the
crankcase and hydraulic system oil levels should
be checked on their respective
dip Sticks , and
the oil supply replenished if necessary. Check the
level of the
coolant in the radiator. Adjust the hand
throttle so that
the engine will run at approximately 600 R. P. M.
Move the shift lever to be sure it is in the
neutral position, then turn the ignition on by
turning the key c1oekwise. A safety feature
incorporated In the trac - tor's starting button
makes it impossible to depress ttie starter
button 13
19
Suggest If the above button click is invalid.
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Section 2
Operating Your New Proctor Model NAA
unless the shift lever is in the neutral
position. Just before pres- sing the starting
button, disengage the clutch by pressing down on
the clutch pedal. Starting the engine without
disengaging the clutch, places unnecessary
current load on the battery and starting motor
and there- fore should never be practiced. (See
Figure 6)
STARTING BUTTON
CHOKE BUTTOH
CLUTCH DISENGAGED Figme 6 Use of Starter Button,
Choke and Clutch Pedal The initial starting of
the engine may require the use of the spring
loaded choke to enrich the fuel air mixture in
the carburetor. In very cold weather hold the
throttle open 1/3 of the way. This 1s
accomplished by pulling out the choke rod
button with the fingers as the starting button is
pressed with the left thumb. The moment the
eftgif1e St tlts, III list the Startif1g
bUttoflafld Llte r the positiofl Of the choke
button. After the engine will operate smoothly,
discontinue the use of the choke. Immediately
after the engine starts, glance at the oil
pressure and ammeter gauges to make sure these
units are functioning satisfactorily. Run the
engine without over-speeding it (1000 RPM)
until it is thoroughly war med up before placing
it under load. Normal operating temperature
occurs when the temperature gauge pointer
registers in the green block. WARMING UP THE
ENGINE AND HYDRAULIC PUMP After an engine is
stopped, then stands for some time before
restarting, thefriction surfaces lose most of the
lubricating oil. When
21
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the link into your browser. The full manual is
available for immediate download. https//www.ebo
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