Ford New Holland LGT14D Diesel Tractor and 44 and 48 Mower Attachment Operator’s Manual Instant Download (Publication No.40641013)

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SERVICE TEOHNIOAL TRAINING PROGRAM
REFERENCE MANUAL
LGT14D DIESEL TRACTOR AND 44 AND 48 MOWER
ATTACHMENT
NAME
Reprinted
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Table of Contents
Page Introduction 3 Engine General 5 Engine
Cylinder Head and Valves 7 Engine Timing Gears,
Oil Pump and Camshaft 11 Engine Connecting
Rods, Bearings, Pistons, Rings and Cylinder
Block 15 Engine Crankshaft and Main
Bearings 21 Engine Cooling 25 Engine Fuel
System 27 Drive System Hydrostatic
Transmission 37 Drive System Transaxle and
Brake 45 Steering and Front Axle 53 Implement
(Mower) Drive 55 Hydraulic Lift System 57 44 and
48 Inch Mowers 61
4
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Introduction
HYDROSTATI TRANSMiSS ON
Al INTAKE
3 CYLINDER ENGINE
TWO 6PEEO RANG GEARBOX
HYORAU
LIFT
HST FOOT PEDAL
The 14. H.P. Lawn and Garden Tractor is a heavy
duty tractor equipped with a 3-cylinder liquid
cooled diesel engine.
TRACTOR SPECIFICS
Overall Length Width Height Weight
71 in. 36.9-37.9 in. 47.6 in. 816 lbs.
(1800 mm) (937-962 mm) (1210 mm) (370 kg)
The engine is mounted in reversed position in the
trac- tor frame so that the hot air flow from the
radiator and engine is directed away from the
operator. The transmission is a hydrostatic
drive with a two-speed range transaxle
assembly. The hydrostatic transmission is foot
pedal controlled. The two speed range gearbox is
shifted by a control lever. The hydraulic lift
system consists of a single spool con- trol valve
mounted on top of the transaxle housing directly
under the operator's seat. The steering system is
a gear type and is operated directly off the
steering wheel shaft.
Speeds Forward Low Forward High
0-4 mph 0-8 mph 0-2 mph 0-4 mph
(0-6.4 kmh) (0-12.8 kmh) (0-3.3 kmh) \0-6.4 kmh)
Reverse Reverse

• Low
• High

Tires Front Rear
16 x 6.5 x 8 Agri. 23 x 10.5 x 12 Agri.
Brake Transmission Mounted Dry Disc Type
7
Introduction
FOUR ANTI-SCALP
GEARBOX DRVE
THREE KNIFE BLADES
GAUGE WHEELS
5 22028
Parallel Linkage Twin V-Belt Idler Pulley Three
Knife Heavy Gauge Steel
Mower Cutting Width Cutting Height
Mounting Drive Clutch Blades Deck
1-4 (Approx. 1/4 Increments)
8
Engine General
ENGINE SPEED LOW IDLE HIGH IDLE (No Load)
RADIATOR
fdUFFLER
1150-1250 rpm 3350-3450 rpm
STARTER MOTOR
WATER TEMPO GEN
3 CYLINDER DIESEL ENGINE ENGINE CODE
E643
TYPE HORSEPOWER
4 CYCLE, WATER COOLED, DIESEL 14 H.P. AT 3200 rpm
(GROSS)
NUMBER CYLINDERS
3 1-2-3 2.52 x 2.52 (64 x 64 mm) 37.6 CU. IN.
(617 cc) 23.51 DRY TYPE
FIRING ORDER BORE/STROKE DISPLACEMENT COMPRESSION
RATIO AIR CLEANER
S22032
9
Engine General
TRANSFER TUBE PRESSURE RELIEF VALVE
LUBRICATION
Pressurized oil from the pump flows in a passage
in the block to the area of the banjo bolt and
the main oil gallery which extends the length of
the block. A relief valve located in the side of
the block extends into the oil gallery. S-22033
Pressurized oil in the main oil gallery flows
through passages to the four main bearings.
Drilled passages in the crankshaft main journals
connect to the connect- ing rod journals. The
remaining oil flows through the banjo bolt and
external tube to the front of the cylinder head.
From there the oil flows through a passage in the
head to the No. 1 rocker shaft pedestal. Oil
flows up- ward through the pedestal, through a
roll pin that ex- tends into the rocker shah. Oil
seepage between the rocker arms and shaft
lubricates the rocker arms, valve tappets, push
rods and tappets.
The engine is a three cylinder, liquid cooled,
overhead valve diesel producing 14 h.p. at 3200
rpm.
The engine is identified by a code number E643
Cast in the side of the engine block.
Four main bearings support the crankshaft. The
front main bearing is a one piece bushing pressed
into the front of the engine block. The remaining
bearings are two piece liners and are held in
place by removable bear- ing supports.
The roll pin serves to hold the rocker shaft in a
fixed location and restricts oil flow to maintain
adequate oil pressure in the main oil gallery.
Oil flow is from the pump pick-up tube into a
drilled passage in the block at the lower side of
the oil pump.
The cylinder walls, pistons and piston pins are
splash lubricated from the crankshaft.
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10
Engine Cylinder Head and Valves
pedestal. Lubrication oil flows through the roll
pin which also serves as a restrictor to maintain
adequate oil pressure in the main oil gallery.
ROCKEFISHAFT ASSEMBLY
CYLtNDER HEAD ASSE/v\BLY
Disassembly of the rocker shaft assembly requires
removing the bolts and pulling the roll pin out
to separate the No. 1 pedestal from the rocker
shaft. Then slide the components off of the
shaft. VALVE TAPPET
The cylinder head and valves include the intake
and ex- haust valves, rocker shaft, cylinder
head, pre- combustion chamber and related
components.
After removing the head, the tappets may be
removed from the top of the cylinder block
without removing the camshaft.
ROCKER ARMS RETAINING BQLT
Inspect the rocker arms and rocker shaft for wear
and excess clearance.
SPRINGS
2GKERSHAFT Replace the shaft if it is worn to
less than 0.455 in. (11.77 mm) diameter.
Replace the rocker arm if the bore diameter
exceeds 0.460 in. (11.7 mm) diameter.
ROLL PIN
PEDESTAL
SHIMS
If the clearance between the rocker shaft and arm
ex- ceeds 0.008 in. t0.2 mm) replace the arm or
shaft as required.
CAMSHAFT ASSEMBLY
lnspect the rocker arm and valve stem contact
surfaces for excess wear.
A full length rocker shaft is utilized on this
engine. The rocker arms and springs are retained
on the shaft with bolts.
Replace worn parts as needed.
A roll pin in the No. 1 rocker shaft pedestal
extends in- to the rocker shaft. This roll pin
positions the rocker shaft lubrication hole with
the oil passage in the
Inspect the cylinder head for flatness. If
warpage ex- ceeds 0.005 in. (0.12 mm) overall
length, resurface the head.
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11
Engine Cylinder Head and Valves
Measure the head surface lengthwise, crosswise
and diagonally to be sure of flatness in all
directions.
VALVE STEM AND GUIDE CLEARANCE CHECK
lnspect and measure the valve stems and guides
for wear and excess clearance.
SHAFT
Replace the valve if the stem wear exceeds the
service wear limit.
ROCKER ARM AND SHAFT INSPECTION
Wear Limit Valve Stem ..................0.23 in.
(5.9 mm)
CLEARANCE
F E KLER GAUÜF
S 22ß39 CYLINDER HEAD SURFACE INSPECTION
S22041 VALVE STEM-TO-GUIDE CLEARANCE CHECK
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12
Engine Cylinder Head and Valves
Determine the valve stem to guide
clearance. Replace the worn parts if the
clearance exceeds the wear limits. Wear Limit
Intake Valve .................0.008 in. (0.2
mm) Exhaust Valve ..............0.010 in. (0.25
mm)
The valve guides are an integral part of the head
and must be replaced as an assembly if defective.
VALVE HEAD MARGIN
120
VALVE SEAT GRINDING
THICKNESS
S22043
90
RECESS DISTANCE
60
CONTACT WIDTH S22042 VALVE SEAT GRINDING
S-22044 VALVE HEAD-RECESS INSPECTION
Grind valves to a 45 angle. If the seat width
exceeds 0.100 in, (2.5 mm) width, narrow the seat
using a 30 or 60 stone as required to narrow
the seat and raise or lower the seat face as may
be needed.
OUT-OF-SQUARE
After grinding the valves, inspect the valve
margin to ensure it is at least 0.020 in. (0.5
mm) width.
After refacing the valve seat and valve face,
measure the recess of the valve in the head. It
must be between 0.026 in. and 0.071 in. (0.65-1.8
mm).
FREE LENGTH
This measurement is especially important if the
cylinder head has been resurfaced.
S-22045
Check the valve spring for free length, tension
and squareness.
VALVE SPRING INSPECTION
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Engine Cylinder Head and Valves
Replace valve springs that do not meet the
specified requirements.
UMBER IDENTIFICATION
Max. Limit J.24 (31.5 mm) 0.05 (1.2 mml
1. (33 mm) 0.04 (1.0 mm)
Free Length ...
Out-of-Square .
Spring Tension 13.2 lb. (60 kg) Min. at 1.11 in.
mm) compressed length
(28.3 SPACER CASKET
NOTCH CUT-OUT DGNTIFICATION
'RECOk CHAI

PRE GOM
HEAD GASKET IDENTIFICATION The engine
compression ratio is controlled by the use of
different thickness head gaskets. To select the
prop- er gasket, measure the protrusion of each
piston above the top of the block at
top-dead-center. Use the piston with the greatest
protrusion as the standard. Select the gasket
according to the measured distance as
shown. PRE-COMBUSTION CHAMBER COMPONENTS The
pre-combustion chamber is located in the head
directly above the cylinder. Ignition starts in
the pre-chamber. Burning gases pass through
drilled ports in the chamber to create a swirl-
ing action in the cylinder combustion area for
more com- plete combustion of the air fuel
mixture.
MEASURED DISTANCE PART NO. CODES INSTALLED THICKNESS
0.022-0.026 (0.55-0.65 mm) 7090 0.043 (1.1 mm)
0.026-0.030 (0.65-0.75 mm) 7100 0.047 (1.2 mml
0.030-0.033 7110 0.051
(0.75-0.85 mm) (1.3 mm)
The Part No. Code is stamped on the top side of
the gasket and is the last four digits of the
part number. Install the gasket with the code
number facing up.
The glow plug extends through the side of the
head in- to the area above the pre-combustion
chamber. When energized, the glow plug element
heats this area and the incoming fuel for
improved starting when the engine is cold.
The head gaskets are also identified by notches
cut in- to the outer edge as follows
The pre-combustion chamber is a press fit and
should not be removed unless required. Always
replace with new parts due to the press fit
requirement to hold in place.
One notch .................Part No. Code 7090 Two
notches ...............Part No. Code 7100 No
Notch ..................Part No. Code 7110
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Engine Timing Gears, Oil Pump and Camshaft
The engine must be removed from the tractor to
ser- vice these components.
GOVERNOR SL
TIME BACKLASH INSPE
RETAINING PLATE
FLYWEIGHT GOVERNOR ASSEMBLY
The camshaft gear and flyweight assembly is a
press fit and is keyed to the camshah. Use a
puller to remove and slide the spacers and
tachometer drive gear off the shaft.
Before removing any of the timing gears, check
the gear backlash. Replace gears as required if
the backlash ex- ceeds 0.010 in. (0.25 mm).
The flyweight type governor assembly is mounted
on the camshaft.
Check the camshaft run out, straighten or replace
the camshaft if the run out is more than 0.004 in
(0.1 mm).
Measure the lobe height for excess wear and
replace the camshaft if the lobes are worn down
to less the allowable limit.
The camshaft is held in place by a plate bolted
to the front of the engine block.
Valve lobe height .........1.026 in. (26.1 mm)
min.
The tachometer drive gear is a clamp fit held by
the camshaft gear.
Injection pump lobe height 1.348 in. (34.3 mm)
min.
TACHOM ETER BEARING DRIVE GEAR
CAMSHAFT GOVERNOR GEAR ASSEMBLY
CAMSHAFT
KEY
SPACER SPACER
S22056
CAMSHAFT ASSEMBLY 11
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Engine Timing Gears, Oil Pump and Camshaft
CAMSHAFT LOBE WEAR CHECK
4 SH
I

VALVE LOBE
INJECTION P'UMP LOBE S-22007
CAMSHAFT INSPECTION
GEROTOFI-EN
ENGINE OIL PUMP
A GEROTOR type engine oil pump is located in the
front of the engine block.
OJL PUMP PORT HEAD
The pump is removed from the engine by removing
the snap ring from the pump shaft and sliding
each part off the shaft.
The oil pump is an integral part of the idler
gear and is driven by the crankshaft gear.
The oil pump is mounted directly to a port block
that is pressed into the engine block. The oil
passages in the port block must align with the
passages in the engine block. If removed, use
tool no. 11063-A to correctly in- stall the port
block and align the oil passages.
lnspect the pump rotors and cover for wear
replacing any part found damaged.
Check the rotor tip clearance and replace if the
clearance exceeds 0.010 (0.25 mm).
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16
Engine Timing Gears, Oil Pump and Camshaft
GEAR
COVER
PUMF ROTOR
ROTOR
S22060 O.IL PUMP COMPONENTS
8 22062
WEAR CHECK
PUMP ROTOR END CLEARANCE CHECK
PRESSURE SWITCH
S-22061 ROTOR TIP WEAR-CHECK After assembly of
the oil pump on the engine, check the clearance
between the rotor and pump cover. The rotor cover
movement against the spring pressure should be
between 0.004 and 0.006 (0.1 and 0.15 mm).
Adjust the clearance by adding or deleting shims.
Engine oil pressure is monitored by means of a
indicator light on the instrument panel. The
indicator light should be ON when key is ON
and the engine is not run- ning, and go OFF
when the engine is started. The indicator light
circuit is grounded through a pressure operated
switch located in the cylinder head above the
fuel injection pump.
15-22083 ENGINE OIL PRESSURE SENDER SWITCH
The switch will close and make contact with
ground if the engine oil pressure drops below
2.8-5.5 psi. (0.2-0.4 kg/cm2) and the warning
light will illuminate.
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18
Engine Connecting Rods, Bearings, Pistons,
Rings and Cylinder Blocks
The engine must be removed from the tractor to
ser- vice the rods, bearings, pistons, rings and
cylinder block.
COMPRESSION RINGS
DIRECTION AL ARROW (FRONT)
OIL CONTROL RING
OI L CONTROL RING
RING EXPANDER
MATCH ING
TOP IDENTIFICATION
S-22065
PISTON RINGS
S-22064
Replace the piston if the side clearance exceeds
the maximum wear limits.
PISTON AND ROD ASSEMBLY
Wear Limit Top Ring ..................0.010 in.
(0.25 mm) 2nd Comp. Ring ............0.010 in.
(0.25 mm) Oil Control Ring ............0.006 in.
(0.15 mm)
A straight connecting rod is used on this engine.
The connecting rod and bearing caps are notched
and iden- tified with a numeral stamping on the
side. The rod and cap stamping must be aligned
when assembled.
Assemble the rod and piston with the arrow on the
top of the piston pointing forward on the engine
and the rod stamping on the injection pump side
of the engine. The piston pin is a tight fit in
the piston while the rod floats on the pin. The
piston is a three ring piston having two compres-
sion rings and one oil control ring. A coil
spring expander is used behind the control ring.
Install the rings with the identification marks
upward.
Using a new ring, check the ring groove clearance.
RING GROOVE WEAR-CHECK
15
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Engine Connecting Rods, Bearings, Pistons,
Rings and Cylinder Blocks
Measure the piston pin bore and determine the pin
to bore clearance.
Replace the piston assembly if the clearance
exceeds the wear limit. Wear Limit Pin to Bore
Clearance .......0.001 in. (0.02 mm)
PISTON SKIRT WEAR CHECK
SM087 PISTON SKIRT WEAR-CHECK Measure the piston
for excess skirt wear. Measurement should be
made at 90 to the piston pin at 0.4 in. (10 mm)
from the bottom. If worn to less than 2.503 in.
(63.7 mm) diameter, replace the piston.

t
RING
END GAP
S-22069 PISTON RING-END GAP CHECK
Check to be sure that new rings have the correct
end gap clearance before installing on the
pistons. Excessive gap can result in excessive
oil consumption and too lit- tle gap can cause
cylinder scoring.
PISTON PIN
PISTON BORE
END GAP CLEARANCE STANDARD MINIMUM MAXIMUM
Top Ring .
.005-.011 (.13-.28 mm) .004-.010 (.1-.25 mm)
0.005 (0.13 mm) .004 (.10 mm)
.040 (1.0 mm) .040 (1.0 mm)
PISTON PIN AND BORE INSPECTION Measure the piston
pin diameter. Replace the pin if the pin diameter
is worn to less than the allowable wear
limit. Wear Limit Piston Pin Diameter
........0.785 in. (19.98 mm)
2nd Ring
Oil Control Ring ...
.004-.012 (.10-.30 mm)
.004 (.001 mm)
.040 (1.0 mm)
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21
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friend! Thank you very much for reading. Enter
the link into your browser. The full manual is
available for immediate download. https//www.ebo
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