6-1 CLUTCH HOUSING DISASSEMBLING1 11
6-2 CENTER CASE DISASSEMBLING11 3
6-3 TRANSMISSION CASE DISASSEMBLING11 5
6-4 CLUTCH HOUSING REASSEMBLING11 7
6-5 CENTER CASE REASSEMBLING11 8
6-6 TRANSMISSION CASE REASSEMBLING121
6-7 CHECK AND MAINTENANCE123
7. REAR AXLE126
7-1 DIFFERENTIAL CASE ASSY DISASSEMBLING126
7-2 REAR AXLE DISASSEMBLING126
7-3 BRAKE CONTROL DISASSEMBLING127
7-4 DIFFERENTIAL CASE ASSY REASSEMBLING128
7-5 REAR AXLE REASSEMBLING129
7-6 BRAKE CONTROL REASSEMBLING130
7-7 CHECK AND MAINTENANCE131
8. FRONT AXLE132
8-1 FRONT AXLE DISASSEMBLING132
8-2 FRONT AXLE REASSEMBLING135
8-3 FRONT AXLE CHECK AND MAINTENANCE139
9. STEERING141
9-1 OPERATOR CONTROL AREA DISASSEMBLING141
9-2 STEERING UNIT DISASSEMBLING142
9-3 HYDRAULIC CYLINDER DISASSEMBLING144
9-4 OPERATOR CONTROL AREA REASSEMBLING146
9-5 STEERING UNIT REASSEMBLING147
9-6 HYDRAULIC CYLINDER REASSEMBLING150
9-7 CHECK AND MAINTENANCE152
10. HYDRAULICS153
10-1 MAIN HYDRAULICS DISASSEMBLING153
10-2 HYDRAULIC LIFT DISASSEMBLING155
10-3 MAIN HYDRAULICS REASSEMBLING158
10-4 HYDRAULIC LIFT REASSEMBLING159
10-5 HYDRAULIC LINE CHECKING164
10-6 HYDRAULIC CHECK AND MAINTENANCE166
11. ELECTRICAL167
11-1 ELECTRICAL DIAGRAM168
11-2 SPECIFICA TION170
2
I. GENERAL
3
1. SAFETY
4
5
2. LOCATION OF ENGINE MODEL, ENGINE SERIAL NO.
AND TRACTOR SERIAL NO. IDENTIFICATIONS
(1) ENGINE MODEL
Engine model is relieved on right side of
cylinder block . Enter this model and engine
serial number
(See next paragraph) for ordering parts.
(2) ENGINE SERIAL NO.
Engine serial No. is punched on right side of
engine block by the injection pump.
(3) TRACTOR SERIAL NO.
Tractor Serial No. is punched on right side of
transmission center case.
NOTE : Use the capacities listed above only as a guide. Always use the dipstick or level plug to make
sure the units are filled to the correct level.
Fuel Specifications
A.P.I Gravity (Min) ————————————————————————— 34
Flash Point (Min) ————————————————————————— 60 C140 F
Cloud Point (Wax Appearance Point) (Max)—————————————— 21 C5.8 F
Pour Point (Max)————————————————————————— 26 C14.8 F
Distillation Temperature, 90% Point ————————————————282 to 338flC 539 to 640flF
Viscosity at 38flC
Centistokes ——————————————————————————— 2.0 to 4.3
Saybolt second Universal ————————————————————— 32 to 40
Cetane Number (Min) —————————————————— 43 (45 to 55 for winter or high altitude)
Water and Sediment by Volume (Max) ———————————————— 0.05 of 1 %
Sulfer, by weight (Max) —————————————————————— 0.50 of 1 %
Copper Strip Corrosion (Max) ———————————————————— No. 2
Ash, by weight (Max) ——————————————————————— 0.01 of 1 %
Fuel Filter Cup Service Interval ——————————————————— Every 10 Hours
Fuel Filter Element Change ———————————————————— Replace yearly or as needed
Fuel injectors
Valve Leakage Rate ——— No Leakage Permissible, Slight Moistening of the Nozzle Tips is allowed
7
4. POWER TRANSMISSION DIAGRAM
8
5. TIGHTENING TORQUES
9
6. PRECAUTIONS FOR DISASSEMBLY
Shaft
movement
10
Place snap ring that square side face to force
Slit
Shaft
Slit
movement
7. GENERAL INFORMATION
11
II. ASSY REMO VAL AND REINSTALLATION
12
1. FRONT AXLE ASSY REMOVAL AND REINSTALLATION
1-1 FRONT AXLE ASSY REMOVAL
(1) 4WD SHAFT REMOVAL
1. Remove cov er A
2. Remove the snap ring at joint (rear side) from
the shaft groove.
3. Move the joint to front side and remove the
4WD shaft.
(2)STEERING HOSE REMOVAL
1.Remove the two hoses from steering cylinder
(3) BATTERY CODE DISCONNECTION
1. Disconnect Battery Code (Negative) and
loosen fixing bolts of bracket.
13
(4) FRONT & REAR HOLDER REMOVAL
1. Remove mounting bolts of front holder.
1-2 FRONT AXLE ASSY
REINSTALLATION
*Install the front axle assy with reversed
procedure of removal.
Use following adjustment and service standards
for the reinstallation.
1. When reinstall the front axle assy to chassis,
tighten the mounting bolts of the rear holder
first.
Tightening Torque : 86.8~97.6lbf.ft
(12 ~13.5 kgf-m)
2. Remove mounting bolts of rear holder.
(5) FRONT AXLE ASSY REMO VAL
1. Lift up the chassis by jack and remove the
front axle assy from chassis.
2. Measure the clearance between front holder
and chassis. Put the shims of which thickness
is half of the measured clearance.
Tighten the mounting bolts of Front Holder.
Tightening Torque : 61.5~68.7lbf.ft
(8.5~9.5 kgf-m)
3. When reinstall the hoses to the cylinder, install
the hose with red tape to lower side of the
port.
4. After install the hoses, turn the steering wheel
to left and make sure the front axle is steered
to left.
5. When reinstall the 4WD shaft, apply the
grease to the spline.
6. Make sure the snap ring is in the groove.
7. After reinstall the front axle assy, check the
toe-in and readjust it if necessary.
14
2. ENGINE ASSY REMOVAL AND REINSTALLATION
2-1 ENGINE ASSY REMOVAL
(1) HARNESSES REMOVAL
1. Remove front grille, bonnet, side covers and
panel cover.
2. Disconnect battery cable (Disconnect
negative cable first and then disconnect
positive cable.)
5. Disconnect the harnesses at oil pressure
sensor, fuel cut solenoid, electric fuel feed
pump and fuel gauge.
3. Disconnect the harnesses at alternator and
starter motor. Disconnect the tachometer
cable.
4. Disconnect the harnesses at water
temperature gauge, water temperature
sensor and glow plug.
6. Disconnect the engine control wires (2 wires)
at governor side. Disconnect the engine
control wire for foot accel pedal from step.
Remove the power steering hoses (2 hoses)
from steering cylinder.
15
(2) PANEL REMOVAL
1. Disconnect the clutch rod and brake rods
(Left and right brake rods).
(Lever side)
2. Disconnect the shuttle wire.
(Transmission side)
3. Disassemble the operator seat area.
16
4. Disconnect the connectors of harness B.
5. Remove the steering hoses from the flow
divider and transmission case.
(Flow divider)
6. Remove the fixing bolts at column cover .
Lift up the panel assy .
Column cover
(Transmission case)
Bolt
Bolts
17
(3) ENGINE REMOVAL
1. Drain the coolant from radiator and drain the
transmission oil.
2. Remove the 4WD Shaft. (See Page 13)
3. Remove the panel Assy. (See Page 17)
4. Remove the fuel hose at fuel filter and drain
the fuel.
5. Remove the air cleaner hose, radiator hoses
(2 hoses) and coolant drain hose from engine.
8. Remove the suction and pressure pipe from
pump I and II.
9. Put the jack under the transmission case to
support and remove the chassis mounting
bolts.
6. Remove the fuel tank bracket and fuel tank.
7. Remove the muffler from engine
10. Pull the chassis together with front axle assy
to front and remove it from engine.
11. Lift the engine by hoist and remove the
engine mounting bolts between engine rear
plate and clutch housing.
12. Remove the engine from clutch housing.
18
2-2 ENGINE REINSTALLATION
*Install the engine with reversed procedure of
removal
Use following adjustment and service standards
for the reinstallation.
1. When reinstall the engine to clutch housing,
apply the liquid packing (Threebond #1208D)
to the mating surface of engine rear plate and
clutch housing.
2. When installing the engine, make sure that
main shaft and clutch center is aligned
3. Tightening torque of engine mounting bolts
61.5~68.7 lbf.ft (8.5~9.5 kgf-m)
4. Tightening torque of chassis mounting bolts
68.7~83.2 lbf.ft (9.5~11.5 kgf-m)
5. Tightening torque of power steering hose at
transmission side.
36.2~43.4 lbf.ft (5~6 kgf-m)
19
6. Shuttle wire installation.
1) Set the length of wire at transmission side to
5.8 in (147 mm).
2) Set the length of wire at shuttle lever side
to 6.5in (164 mm).
*Amount of screw into the ball joint must be
0.32 in (8 mm)
8. Clutch pedal free play
[0.787~1.181 in.]
9. After reinstall the harnesses and tachometer
cable, clamp them not to touch the muffler,
manifold and fan belt.
3) After set of the wire lengths, adjust the wire
length by nut to obtain the shuttle shift lever
neutral position at lever guide. In the neutral
position, shuttle shift lever can be move side
to side.
7. Brake pedal adjustment (See page 127)
Free play : 0.99~1.39in (25 ~35 mm)
Adjust the left and right brake pedal height
difference to be less than 0.12in (3 mm).
20
3. CLUTCH HOUSING, TRANSMISSION CASE, REAR AXLE
CASE AND HYDRAULIC LIFT CASE REMOVAL AND
REINSTALLATION
3-1. HOUSINGS REMOVAL
(1) CLUTCH HOUSING REMOVAL
1. Remove the fixing bolts between clutch
housing and center case.
2. Lift the clutch housing and remove it from
center case.
2. Remove the main shift lever linkages.
3. Lift the center case and remove it from
transmission case.
(2) CENTER CASE REMOVAL
1. Remove the fixing bolts between center
case and transmission case.
21
(3) HYDRAULIC LIFT CASE REMOVAL
1. Remove the seat and seat bracket.
2. Remove the lever grip from position control
lever and remove the lever guide by removing
the fixing bolts.
3. Remove the top link bracket .
Top link bracket
(8) REAR AXLE CASE REMOVAL
1. Remove the ROPS.
1) Remove hinge pin and position pin. Remove
ROPS upper flame.
2) Remove fixing bolts of ROPS lower flame
and remove ROPS lower flame.
4. Remove the fixing bolts of hydraulic lift case
and lift up the hydraulic lift case to remove.
22
3) Remove mounting bolts of ROPS lower
bracket and remove the bracket.
2. Disconnect the brake rod at brake lever on
the rear axle case.
3-2. HOUSING REINSTALLATION
*Reinstall the housings with reverse procedure
of the removal. Use following values as
adjustment and service standard for the
installation.
3. Lift the rear axle case and remove the
mounting bolts.
(1) Rear axle case reinstallation
1. Apply the liquid packing (Threebond
#1280D) to the mating surface of the rear
axle case and transmission case.
2. Tightening torque of rear axle case
mounting bolts.
61.5~68.7lbf.ft (8.5 ~ 9.5 kgf-m)
(2) Hydraulic lift case reinstallation
1. Apply the liquid packing (Threebond
#1280D) to the mating surface of the
hydraulic lift case and transmission case.
2. Tighten the top link bracket mounting bolts
before tightening the hydraulic lift case fixing
bolts.
4. Remove the rear axle assy.
3. Tightening torque of hydraulic case fixing
bolts.
61.5~68.7 lbf.ft (8.5 ~ 9.5 kgf-m)
4. Tightening torque of the top link bracket
mounting bolts.
86.8~97.6 lbf.ft (12 ~ 13.5 kgf-m)
23
5. In case of equipping the draft control and
disassembling the top link bracket, adjust the
dimension of stopper bolt to 29 mm(1.14in)
and lock it by jam nut.
(3) Center case reinstallation
1. Apply the liquid packing (Threebond #1208D)
to the mating surface of the center case and
transmission case.
2. Tightening torque of center case fixing bolts.
86.8~97.6 lbf.ft (12 ~13.5 kgf-m)
(4) Clutch housing reinstallation
1. Apply the liquid packing (Threebond #1208D)
to the mating surface of the clutch housing
and center case.
2. Tightening torque of the clutch housing fixing
bolts.
86.8~97.6 lbf.ft (12 ~13.5 kgf-m)
24
4. ENGINE
4-1. DETERMINING WHEN TO
OVERHAUL THE ENGINE
The trouble to be taken into account as the most
valid reason for overhauling the engine is(4): in
actually determining when to overhaul the
engine, it is reasonable to take this trouble into
account in conjunction with the other ones
(1)DETERMINING WHEN TO
OVERHAUL THE ENGINE
Generally, when to overhaul the engine is to be
determined by taking into account a drop in
compression pressure as well as an increase in
lube oil consumption and excessive blowby gases.
Lower power or loss of pow er, an increase in fuel
consumption, a drop in lube oil pressure, hard
starting and excessive abnormal noise are also
troubles. These troubles,however,are not always
the result of low compression pressure and give
no valid reason for overhauling the engine.
the engine develops troubles of widely different
varieties when the compression pressure drops
in it. Following are the typical troubles caused
by the compression pressure failure:
(1)Low power or loss of power
(2)Increase in fuel consumption
(3)Increase in lube oil consumption
(4)Excessive blowby through breather due
to worn cylinders, pistons, etc.
(5)Excessive blowby due to poor seating of
worn inlet and exhaust valves
(6)Hard starting or failure to start
(7)Excessive engine noise
In most cases, these troubles occur concurrently.
Some of them are directly caused by low
compression pressure, but others are not.
Among the troubles listed above, (2)and(6)
are caused by a fuel injection pump
improperly adjusted with respect to injection
quantity or injection timing, worn injection pump
plungers, faulty injection nozzles, or poor care
of the battery , starter and alternator.
(2) COMPRESSION PRESSURE
MEASUREMENT
1. Inspection
-Check to make sure(1)The crankcase oil level is correct, and the
air cleaner, starter and battery are all in
normal condition.
(2)The engine is at the normal operating
temperature.
2. Measurement
(1)Move the control lever to a position for
shutting off fuel supply.
(2)Remove all glow plugs from the engine.
Install the compression gauge and adaptor
(ST332270)combination to a cylinder on
which the compression pressure is to be
measured.
(3)Turn the engine with the starter and read
the gauge pressure at the instant the gauge
pointer comes to stop.
(4)If the gauge reading is below the limit,
overhaul the engine.
25
1. Be sure to measure the compression
pressure on all cylinder.
2. The compression pressure varies with
change of engine r.p.m.. This makes it
necessary to check engine r.p.m.. at the
time of measuring the compression
pressure.
3. It is important to measure the compression
pressure at regular intervals to obtain the
data on the gradual change of the
compression pressure.
4. The compression pressure would be slightly
higher than the standard in a new or
overhauled engine owing to breaking-in of
the piston rings, valve seats, etc. It drops as
the engine components wear down.
(3) BASIC PRECAUTION FOR DISASSEMBLY
AND ASSEMBLY
This section outlines basic precautions
recommended by Mitsubishi that should
always be observed.
1. Disassembly
(1)Always use tools that are in good condition
and be sure you understand how to use them
before performing any job.
(2)Use an overhaul stand or a work bench, if
necessary . Also, use bins to keep engine parts
in order of removal.
(3)Parts must be restored to their respective
components from which they were removed at
disassembly. This means that all parts must
be set aside separately in groups,each
marked for its component, so that the same
combination or set can be
reproduced at assembly.
(4)Pay attention to marks on assemblies,
components and parts for their positions
or directions. Put on marks, if necessary,
(5)Carefully check each part or component
for any sign of faulty condition during
removal or cleaning. The part will tell you
how it acted or what was abnormal about
it more accurately during removal or
cleaning.
(6)When lifting or carrying a part too heavy
or too awkward for one parson to handle,
get another person’s help and, if neces sary, use a jack or a hoist.
2. Assembly
(1)Wash all parts, except for oil seals,
O-rings, rubber sheets, etc., with cleaning
solvent and dry them with pressure air.
(2)Always use tools that are in good condi tion and be sure you understand how to
use them before performing any job.
(3)Use only good-quality lubricants. Be sure
to apply a coat of oil, grease or sealant to
parts as specified.
(4)Be sure to use a torque wrench to tighten
parts for which torques are specified.
(5)Any time the engine is assembled, new
gaskets and O-rings must be installed.
26
(6)PREPARATION FOR DISASSEMBLY
1. Engine oil draining
Remove the drain plug from the bottom of
the oil pan and allow the oil to drain.
Refil capacity ——— 1.19 gal (4.5 L)
Hot oil and components can cause personal
injury. Do not allow hot oil or
components to contact skin.
2. Coolant draining
Loosen the drain plug on the right side of the
cylinder block and allow the coolant to drain.
Refill capacitiy ——— 6.6 gal (2.5 L)
27
4-2. TROUBLE SHOOTING
Problem 1 : Fuel knock
More or less knock occurs in diesel engines. This may be caused either by an excessively
large delay period or by a too fast rate of fuel injection.
(1)Items to be checked for ahead
• Clogged air cleaner
• Poor quality fuel
(2)Inspection procedure
28
Problem 2 : Overheating
(1) Items to be checked for ahead
Overheating might also be caused by abnormal operating conditions. If the engine is overheating but its cooling system is not contributing to this trouble, it is necessary to check the difference between the ambient temperature when the engine is in normal operation
(with the thermostat fully open). If the ambient temperature is higher than the normal
coolant temperature by more than 140 F(108 C), investigate other items than those related to the
engine cooling system.
• Insufficient coolant and exterior coolant leaks
• Loose fan belt
• Radiator core openings plugged with dirt
(2)Inspection procedure
29
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