Page 1 of 30

x 
Service Manual 
MONTCRO 
GROUP INDEX NrJDAA-A 
Introduction and 
Master Troubleshooting ......*....*...*.. 
Lubrication and Maintenance . . . . . . . . . 
m. 
1989 : Volume 1 
FOREWORD 
This Service Manual has been prepared with the 
latest service information available at the time of 
publication. It is subdivided into various group 
categories and each section contains diagnosis, 
disassembly, repair, and installation procedures 
along with complete specifications and tightening 
references. Use of this manual will aid in properly 
performing any servicing necessary to maintain or 
restore the high levels of performance and reliability 
designed into these outstanding vehicles. 
4liP A 
. 
n 
WESUPPORT 
VOLUNTARY TECHNICIAN 
CE,TT,flCA~ONMROUGH 
MITSUBISHI MOlUR SALES OF AMERICR Inr 
Mitsubishi Motors corporation reserves the right to make changes in 
design or to make additions to or improvements in its products without 
imposing any obligations upon itself to install them on its products 
previously manufactured. 
Front Suspension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . y 
Rear Axle *.......*.......*................a.....*.. 
m 
Service 
Srakes- Parking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . & 
Clutch ................................................ 
Hi 
Cooling ............................................. 
w 
Engine ............................................... m 
Intake and Exhaust ,.......*..........*...... 
ml 
Fuel System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
mE 
Propeller Shaft and Universal 
Joint . . . . . . . . m; 
Rear Suspension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . mt 
Power Steering . . . . ..a*........................ 
m 
Transmission - fity$tic . . . . . . . . . . . . . &!a 
Wheels and Tires ............................. 
FP 
Body .................................................. m 
Heater and Air Conditioning ........... p!’ 
Emission Control Systems .............. &!!!! 
NOTE 
For Electrical refer to .._ 
Volume-2 “Electrical” 
Q 198’8 Mitsubishi Motors Corporation Printed in Japan  
         
        
        
     
        
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INTRODUCTION AND MASTER TROUBLESHOOTING - Precautions Before Service 9 
nm (in.) 
smo59 
PARTS 
When replacing parts, use MITSUBISHI genuine parts 
VEHICLE WASHING 
If high-pressure car-washing equipment or steam car-washing 
equipment is used to wash the vehicle, be sure to maintain the 
spray nozzle at a distance of at least 300 mm (11.8 in.) from 
any plastic parts and all opening parts (doors, luggage 
compartment, etc.). 
SERVICING ELECTRICAL SYSTEM 
1. Note the following before proceeding with work on the 
electrical system. 
Note that the following must never be done: 
Unauthorized modifications of any electrical device or 
wiring, because such modifications might lead to a vehicle 
malfunction, over-capacity or short-circuit that could result 
in a fire in the vehicle. 
2. When servicing the electrical system, disconnect the 
negative cable terminal from the battery. 
Caution 
1. Before connecting or disconnecting the negative 
cable, be sure to turn off the ignition switch and the 
fighting switch. 
(If this is not done, there is the possibility of 
semiconductor parts being damaged.) 
2. After completion of the work steps [when the 
battery’s negative (-) terminal is connected], warm 
up the engine and allow it to idle for approximately 
five minutes under the conditions described below, 
in order to stabilize engine control conditions, and 
then check to be sure that the idling is satisfactory. 
For 3.OL Engine models: If the engine rpm is high, 
switch OFF the ignition switch, and then, after 
switching it ON again, let the engine idle for 2 or 3 
minutes. 
This will cause the engine rpm to decrease about 
100 rpm, so repeat this procedure until the pre- 
scribed idling speed is reached. 
Engine coolant temperature : 85”-95°C (‘l85403”F) 
Lights, accessories : OFF 
Transmission : neutral position 
(Automatic transmission models: “IV or “P”J 
Steering wheel : neutral (center) position 
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        Page 14 of 30
,’ i 1; 
h-J ” ^ . 
14 Treatment Before I INTRODUCTION AND MASTER TROUBLESHOOTING - AftertheFotiingofastmsm 
TREATMENT BEFORE/AFTER THE FORD- 
ING OF A STREAM 
INSPECTION AND SERVICE BEFORE FORDING 
A STREAM NOW%- 
Vehicles which are driven through water, or which may 
possibly be driven through water, should be subjected to the 
following inspections and maintenance procedures in ad- 
vance. 
e Seal the speedometer cable with a water-resistant grease ~_ 
or tape. 
a Inspect the dust boots and breather hose for cracks or 
damage, and replace them if cracks or damage are found. 
,- . 1^. dometer cable 1 
Steering joint assembly 
/ 1 Drive shaft boot -\l(. ‘/ Torsion bar dust cover  1 Breath& hose== 
OOW528 
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Treatment Before / INTRODUCTION AND MASTER TROUBLESHOOTING - AftertheFordingofaStream I5 
l Apply grease to the lubricating points of the front suspen- 
sion, steering linkage and propeller shaft. 
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16 Treatment Before I INTRODUCTION AND MASTERTROUBLESHOOTING - AftertheFordingofaStream 
INSPECTION AND SERVICE AFTER FORDING A 
STREAM 
After fording a stream, check the following points. If abnormal 
condition is evident, clean, replace or lubricate. 
=  Check for water. mud. sand. etc. in the rear brake drum. 
clutch housing, &tarte; mot&, brake pipe and fuel pipe: 
Check for water in the fluid or oil inside the front 
differential. rear differential, transmission and transfer 
case. 
Apply grease to the lubricating points of the front suspen- 
sion, steering linkage and propeller shaft. 
Check all boots and breather hoses for cracks and 
damage. 
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INTRODUCTION AND MASTERTROUBLESHOOTING - GeneralDataandSpecmcations 21 
L042G L141G 
TNSL FM TNJL F/H 
TRJL F/H TRUL F/H 
Engine 
Model No. G54B 6672 6672 6672 
Type In-line OHC V-type, OHC V-type, OHC 
V-type, OHC 
Number of cylinders 4 6 6 6 
Bore 91.1 mm(3.59in.j 91.1 mm(3.59in.j 91.1 mm(3.59in.) 91.1 mm(3.59in. 
Stroke 98.0 mm (3.86 in.) 76.0 mm (2.99 in.) 76.0 mm (2.99 in.) 76.0 mm (2.99 in. 
Piston displacement 2,555 cm3 2,972 cm3 2,972 cm3 2,972 cm3 
(155.9 cuin.) (181.4cu.in.) (181.4cu.in.) (181.4 cuin.) 
Compression ratio 8.7 8.9 8.9 8.9 
Firing order 1-3-4-2 1-2-3-4-5-6 I -2-345-5 1-2-3-4.5-8 
Basic ignition timing 7”BTDC 22” 5”BTDC 22” 5”BTDC i 2” 5”BTDC +-2” 
Transmission &transfer case 
Model No. KM145 V5MTl KM148 KM148 
Type S-speed manual 5-speed manual &peed automatic &peed automatic 
Gear ratio 
Transmission 1st 3.967 3.918 2.826 2.826 
2nd 2.136 2.261 1.493 1.493 
3rd 1.360 1.395 1 .ooo 1.000 
4th 1 .ooo 1.000 0.688 0.688 
5th 0.856 0.829 - 
Reverse 3.587 3.925 2.703 2.703 
Transfer case High 1 .ooo 1 .ooo 1 .ooo 1 .ooo 
Low 1.944 1.925 1.925 1.925 
Final ring ratio  gear 4.625 4.625 4.625 4.625 
Clutch 
Type Dry single disc & Dry single disc & - 
diaphragm spring diaphragm spring 
Chassis 
Tire size 
Front suspension 
Type 
Rear suspension 
Type 
Brakes 
Type Front 
Rear P225ff 5Rl5 P235ff5Rl5 
independent Independent double-wishbone 
double-wishbone 
Rigid axle Rigid axle 
Disc Disc 
Drum Drum (Leading and trailing) 
(Leading and trailing) 
Power steering 
Gear type 
Gear ratio 
Fuel tank capacity Integral type Integral type (Recirculating ball nut) 
(Recirculating ball nut) 
16.4 16.4 
liters (gals.) 60 (15.9) 75 (19.8) 
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INTRODUCTION AND MASTER TROUBLESHOOTING - General Dataand Swxifications 23 
Transmission &transfer case 
Model No. 
Type 
Gear ratio 
Transmission 1 St 
2nd 
3rd 
4th 
5th 
Reverse 
Transfer case High 
Low 
Final ring gear ratio 
Elutch 
Type 
Chassis 
Tire size 
Front suspension 
Type 
Rear suspension 
Type 
Brakes 
Type Front 
Rear 
Power steering 
Gear type 
Gear ratio 
Fuel tank capacity liter (gal.) VMNJL F/H VMRJL F/H WMRUL F/H 
EMT1 KM148 KM148 
5-speed manual 4-speed automatic 4-speed automatic 
3.918 
2261 
1.395 
1.000 
0.829 
3.925 
1.000 
1.925 
4.625 2.826 2.826 
1.493 1.493 
1 .ooo 1 .ooo 
0.688 0.688 
2.703 
1 .ooo 
1.925 
4.625 - 
2.703 
1 .ooo 
-1.925 
4.625 
Dry single disc & 
diaphragm spring 
P235ff 5 R 15 L146G 
7 
Independent doublewishbone 
Rigid axle 
Disc 
Drum (Leading and trailing) 
Integral type (Recirculating ball nut) 
16.4 
92 (24.3) 
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        Page 27 of 30

INTRODUCTION AND MASTER TROUBLESHOOTING - Master Troubleshooting 27 
POOR FUEL MILEAGE 
Symptom Probable cause Reference 
page or remedy 
Poor fuel mileage Fuel leak Repair as 
necessary 
I 
1 Air cleaner clogged 
1 Ignition problems 1 11-3.10 1 
1 8-147to 149 1 
Carburetor or fuel injection system problems 1434.90 
I 
Compression too low 
1 g-II.65 1 
Tires improperly inflated 1 22-2 
I 
Clutch slips 
16-4 I 
Brakes drag 1 5-13 I 
NOISE 
Probable cause Reference 
page or remedy 
Noise Loose bolts and nuts Retighten as 
necessary 
I 
1 Enaine noise 
I 9-11 I 
HARD STEERING 
Symptom 
Hard steering Probable cause 
Loose power steering oil pump belt 
Low fluid level 
Air in power steering system 
Low tire pressure 
Excessive turning resistance of upper or lower ball joint 
Excessivelytight linkage ball joint 
Improperfrontwheel alignment 
Excessive turning resistance of tie-rod ball joint 
No lubricantion of tie-rod 
Sticky flow control valve 
No lubrication of idler arm Reference 
page or remedy 
19-10 
19-11 
19-11 
22-2 
2-27 
1937 
2-13 
19-38 ’ 
Lubricate 
19-33 
19-39 
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