1989 MITSUBISHI GALANT engine

GENERAL - Scheduled Maintenance Table/Maintenance Service00-39
SCHEDULED MAINTENANCE UNDER SEVEiRE USAGE CONDITIONS
The maintenance items should be performed according to the following tab\
le:
Maintenance Item Service to be
Performed
IEngine Oil Change Every or
3 Months
(:z:.:a::I
Rear Drum Brake
Linings and Rear
Wheel Cylinders Inspect for Wear
and Leaks
1
Mileage Intervals Kilometers in Thousands (Miles in Thousands) Severe Usage
Conditions
More Frequently
Every 4,800 km
(3,000 miles)/xlxlx/xI I I1 Every
9,600 km (6,000 miles)
IxIxlxIxI I I>(
More Frequently1x1 I I I 1x1I I I I I I I
More Frequently
Ix1 I I I lx/
Severe usage conditions A-Driving in dusty conditions
- -B- I railer
towing or police.
taxi,
or commercial
type
operation
C-Extensive idling
D-Short trip operation at freezing temperatures (engine not thoroughly warmed up) E-Driving in sandy areas- -..F-Dnvlng In salty areas
G-More than 50% operation in heavy city trafic during
hot weather above 32°C (90°F)
MAINTENANCE SERVICE
1. FUEL SYSTEM (Tank, Lines, Connections and
Fuel Tank Filler Tube Cap) (Check for leaks)/2.
FUEL HOSES (Check for leaks or
damagekOOSnOB.
1.Check for damage or leakage in the fuel lines and con-
nections and looseness of the fuel tank filler tube cap.
2. Inspect the surface of fuel hoses for heat and mecha-
nicall damage. Hard and brittle rubber, cracking, check-
ing, tears, cuts, abrasions and excessive swelling
indicate deterioration of the rubber.
3. If the fabric casing of the rubber hose is exposed by cracks and abrasions in the fuel system, the hoses
should be changed.
3. AIR CLEANER ELEMENT (Replace)
MMlSAKH
The air cleaner element will become dirty and loaded with dust during use, and the filtering effect will be substantiallyreduced. Replace it with a new one.

(1) Loosen the clamp coupling the air intake hose and the air cleaner cover, and separate the hose.
(2) Disconnect the volume air flow sensor connectors.
(3) Unclamp the air cleaner cover clip.
(4) Lifting the air intake hose, remove the air cleaner cover.
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00-40GENERAL- Maintenance Service
Caution
The air cleaner cover should be removed carefully,
because it includes the volume air flow sensor.
/
(5) Remove the air cleaner element.(6) Set a new air cleaner element and install the air cleaner cover.
I hose,I
Plug gapgauge
Measurementrection01
If
0110182
(1) Disconnect the volume air flow sensor connector.
(2) Disconnect the breather hose, purge hose, by-pass air hose and boost hose connections.
(3)Remove the air intake hose on the air cleaner cover side
and then move the air intake hose to the front of the air
cleaner body.
(4) Unclamp the air cleaner cover.
Caution
Care must be taken when removing the air cleaner
cover, because the volume air flow sensor is at-
tached.
(5) Take out the air cleaner element.
(6) Check the air cleaner element for dirt or clogging; if necessary, clean by using compressed air.
(7) Replace the air cleaner element if the dirt or clogging
is
serious.
(8) Insert the element into the air cleaner body and install the air cleaner cover.
(9) Install the air intake hose.
(10)Connect the breather hose, purge hose, by-pass air
hose and boost hose.
(11
)Connect the volume air flow sensor connector.
4. SPARK PLUGS (Replace)
h%OSAOFa
1. Spark plugs must spark properly to assure proper engine performance and reduce exhaust emission
level.
Therefore, they should be replaced periodically with
new ones.
2. The new plugs should be checked for the proper gap.
Spark plug gap:
1.0-1.1
mm (.039-.043

in.)
0.7-0.8 mm (.028-.031 in.)
3.Install the spark plug and tighten to 20-30 Nm (15-21
ftlbs.).
5. TIMING BELT (Replace)moossAsa
Replace the belt with a new one periodically to assure
proper engine performance.
For disassembly and reassembly procedures, refer to
GROUP 11 -Service Adjustment Procedures.
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GENERAL - Maintenance Service00-41
-1
6COOO9
L!6COO39
OlR0344
6. DRIVE BELT (For Water Pump and
Generator) (Inspect for tension)
MOOSBBN
(1) Place straight edge as shown in the illustration.
(2) Measure the deflection with a force of
100 N (22 Ibs.)
applied to belt mid-point between water pump pulley
and generator pulley. If the standard value is not ob-
tained, make adjustment.
Standard value: 9.0-l 1.5 mm (.354-.453
in.)
(3) Use a tension gauge to check the belt tension. If the standard value is not obtained, make adjustment.
When tension gauge is used, the tension may be
measured between any two pulleys.
Standard value:
250-500 N (55-110
Ibs.)
7. ENGINE OIL (Change)MOOSAABc
Always use lubricants which conform to the requirements
of the API classification “For Service SG” or “For Service SG/CD”
when available, and have the proper SAE grade
number for the expected temperature range.
Never
Lose nondetergent or straight mineral oil.
(1) After warming up the engine, remove the oil filler cap.
(2) Remove the drain plug to drain the engine oil. (3) Replace the drain plug gasket with a new one and
tighten the drain plug.
(4) Supply new engine oil through the oil filler.
Engiine oil capacity:
Items Engine oil capacity
Oil pan
1
Models built up toSOHC3.5 dm3 (3.7 qts.)
April 1992DOHC4.0 dm3 (4.2 qts.)
Models built from May 19924.0 dm3 (4.2 qts.)
Oil filter 0.3 dm3 (l/2 qt.)
Oil cooler
(clnly models with turbo) 0.3 dm3 (I/2 qt.)
(5) Start and run the engine a few minutes.
(6) Stop the engine and check the engine oil level.
8. ENGINE OIL FILTER (Change)
MOOSABG
The quality of replacement filters varies considerably. Only high
quatlity filters should be used to assure most efficient
service. Genuine oil filters require that the filter is capable of
withstarlding a pressure of 256 psi are high quality filters
and are recommended as follows:
Oil Filter Part No.
Mitsubishi Genuine Parts: MD135737,
MD136466
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00-42GENERAL -Maintenance Service
ENGINE OIL FILTER SELECTION
This vehicle is equipped with a full-flow, throw-away oilfilter.
The same type of replacement filter is recommended as a replacement filter for this vehicle. It is possible, particularily
in cold weather, that this vehicle may develop high oil
pressure for a short duration. You should be sure that any replacement filter used on this vehicle is a high-quality filter
and is capable of withstanding a pressure of 256 psi (manufacturer’s specifications) to avoid filter and engine
damage. The following is a high-quality filter and is strongly
recommended for use on this vehicle
: Mitsubishi Engine
Oil Filter Part No. MD1 35737 or MD1 36466.
Any replacement oil filter should be installed in accordance
with the oil filter manufacturer’s installation instructions. (1) Remove the engine oil filler cap.
(2) Remove the engine oil drain plug, and drain out the
engine oil.
(3) Remove the engine oil filter by using the oil filter
(4)
GLr!he oil filter mounting surface of the oil filter
bracket.
OSPOO26 1 09A.0024(5) Coat engine oil to the O-ring of new oil filter.
(6) Screw in the oil filter with hand until it touches the sur-
face of the flange and then tighten it with the filter
wrench, etc.
l For MD135737:
One full turn or 14 Nm
(loft. Ibs.)0For MD136466:3/4 turn or 17 Nm (12 ft. Ibs.)
(7) Supply engine oil.
(8) Start and run engine and check for engine oil leaks.
(9) After stopping engine, check oil level and replenish as
necessary.
9. MANUAL TRANSAXLE (Inspect oil level)
MOO66CE
Inspect each component for evidence of leakage, and
check the oil level by remaining the filler plug. If the oil is
contaminated, it is necessary to replace it with new oil.
I. With the vehicle parked at a level place, remove the filler plug and check to be sure that the oil level is up to
the lower edge of the filler plug hole.
2. Check to be sure that the transmission oil is not noticeably dirty, and that it has a suitable viscosity.
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GENERAL -Maintenance Service
(1O)Star-t engine and allow to idle for at least two minutes.
Then, with parking brake on, move selector
fever
momentarily to each position, ending in “N” Neutral
position.
(11)Add sufficient ATF to bring fluid level to lower mark.
Recheck fluid level after transaxle is at normal Operating
temperature. Fluid level should be between upper and lower marks of
“HOT” range, Insert dipstick fully to prevent dirt from
entering transaxle.
OOA0051
11 .ENGINE
COOLANT (Change)MOOSEEAC
Check the cooling system parts, such as radiator, heater,
and oil cooler hoses, thermostat and connections for
leakage and damage.
CHANGE COOLANT
1. Remove the radiator cap.
2. Loosen the drain plug to drain the coolant.
3. Drain the coolant from the reserve tank.
4. After draining the coolant, tighten the drain plug securely.
5.Supply the coolant into the radiator until it is filled up to
its filler neck.
6. Supply the coolant into the reserve tank.
7. After warming the engine until the thermostat opens, remove the radiator cap and check the coolant level.
8.Supply the coolant into the radiator until it is filled up to
its filler neck, and install the radiator cap securely.
9.Fill the reserve tank with coolant up to the “FULL” line.
14K512
1 12.DISC BRAKE PADS (Inspect for wear) MWSBFA
Check for fluid contamination and wear. Replace complete
set of pads if defective.
Caution
The pads for the right and left wheels should be
reDlaced at the same time. Never “split” or intermix
brkke pad sets.
All four pads must be replace as a complete set.
Thickness of lining (A)
Limit: 2.0 mm (.08 in.)
13.REAR DRUM BRAKE LININGS AND REAR
WHEEL CYLINDERS (Inspect for wear and
leaks)MOOSBGB
1. Remove the brake drum and check the thickness of brake shoe lining for wear. Check the automatic brake
adjusting system by hand to see if it operates smoothly.
Also see if the gears are in proper mesh with each
other. To assure smooth functioning, apply a very thin
coat of multipurpose grease to the friction surface of
adjuster and link shaft.
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00-46GENERAL - Table of Main Sealants and Adhesives
TABLEOF MAINSEALANTS
AND
ADHESIVES
MONA--
Application Recommended brand
1. Sealing for engine accessory parts 3M
ATD Part No.8660
or equivalent
(1) Sealing
for semi-circular packing of rocker cover and
cylinder head
(2) l
Sealrng for semi-circular packing and rocker cover, 3M
ATD Part No.8660
or equivalent
cylinder head
l Oil pressure switch
(3) l Engine coolant temperature switch l Engine coolant temperature sensor
l Thermal vacuum valvel Therm0
switch
l Engine coolant temperature gauge unit
l Joint 3M
Nut Locking Part
No.4171 or equivalent
(4) Oil pan MITSUBISHI GENUINE Part No.MD997110
or
equivalent
2. Sealing for weatherstrip
(1) l Sealing of tempered glass and weatherstrip 3M
ATD Part No. 8513 or equivalent
l Sealing
of body flange and weatherstrip 3M
ATD Part No.8509
or equivalent
(2) Sealing of laminated glass and weatherstrip 3M
ATD Part No.8509
or equivalent
3. Gluing with ribbon sealer l Door waterproof film
l Fender panel
l Splash shield
l Mud guard 3M
ATD Part No.8625
or equivalent
l Rear combination light TSB Revision

11-I
CONTENTSM11AA-
ENGINE
>
........................
53
CAMSHAFT AND CAMSHAFT OIL
SEALS..........................................68
CYLINDER HEAD GASKET
.................73
ENGINE ASSEMBLY
.........................63
OIL PAN AND OIL SCREEN ...............71
SERVICE ADJUSTMENT
PROCEDURES................................
57
Basic
Idle Speed Adjustment
...........................
.
Refer to GROUP 13
Compression Pressure Check ..............
59
Curb- Idle Speed Adjustment_.___..__._____....___._....Refer to GROUP 13
Dash Pot Inspection and Adjustment 58
Drive Belts Tension Adjustment . 6
1
Engine Oil Check . . .
_. _. . . _. . . . . . . 57
Ignition Timing Adjustment
__..._.__...................Refer to GROUP 16
Lash Adjusters Check ......................
.
57
Manifold Vacuum Inspection
..............
.
60
SPECIAL TOOLS.............................56
SPECIFICATIONS
............................53
General Specifications .....................
.
53
Sealants and Adhesives ....................
56
Service Specifications......................
.
53
Torque Specifications
......................
.
54
TIMINGBELT.................................80
TROUBLESHOOTING
........................56
E,NGINE . . . . . . . . . . ..m...........2
CAMSHAFT AND CAMSHAFT OIL
SEAL. . . . . . . . . . . . . . . . . . . ..*............ . . . . . . . . . .19
CYLINDER HEAD GASKET..................25
ENGINE ASSEMBLY.........................14
OIL PAN AND OIL SCREEN. . . . . . . . . . . . . . . .23
SERVICE ADJUSTMENT
PROCEDURES. . . . . . . . . . . . . . . . . . . . . . . ..*.......7
Basic Idle Speed Adjustment
. . . . . . . .._......... . Refer to GROUP 13
Compression Pressure Check . .
.
8
Curb Idle Speed Adjustment
.__................ _. . . . Refer to GROUP 13
Drive Belts Tension Adjustment .........
.
12
Engine Oil Check
..........................
.
7
Ignition Timing Adjustment
_...___............... . . . . . Refer to GROUP 16
Lash Adjusters Check . . . . . . . . . . . .
7
Manifold Vacuum Inspection . . . . . . . . . .9
Timing Belt Tension Adjustment . . . .10
SPECIAL TOOLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
.5
SPECIFICATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
General Specifications _. _.2
Sealants and Adhesives
._ _. . . . . . . .5
Service Specifications . . . .2
Torque Specifications . . . . . . . . . . . . . . . .4
TIMING BELT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . m.. .6
Compression Too Low
Connecting Rod Noise/Main Bearing Noise Excessive Engine Rolling and Vibration
Noisy Valves
Oil Pressure Drop
Oil Pressure Too High
Timing Belt Noise

11-2ENGINE - Specifications
ENGINE
SPECIFICATIONS
GENERAL SPECIFICATIONSMllCA-A
ItemsType
Number of cylinders
Bore
Stroke
Piston drsplacement
Compression ratio
Firing order
Silent shaft
Valve timing
Intake valveOpens (BTDC)
Closes
(ABDC)
Exhaust valveOpens
(BBDC)
Closes (ATDC)
Lubrication Specifications
In-line Single Over Head Camshaft
4
mm (in.) 85 (3.35)
mm (in.) 88 (3.46)
cm3 (cu.in.) 1,997 (121.9)
8.5
<8 VALVE>, 9.5 < 16 VALVE>
1-3-4-2
I Equipped
19”<8VALVE>,11”<16VALVE>
57” <8 VALUE>, 53”
57”
<8 VALVE>, 63”
19” , 21” <16VALVE>
Pressure feed-full flow filtration
SERVICE SPECIFICATIONS
MllCB-A
Items Standard Value
Limit
Engine adjustments Engine compression pressure
Engine compression pressure difference
between each cylinder
Intake manifold vacuum-at idle
kPa (psi)/rpm 1,250 (178)/250-400<8 VALVE>1,300 (185)/250-400< 16 VALUE>
kPa (psi) - mmHg

(in.Hg)Approx. 500 (20)<8 VALVE>
Approx. 510 (20)
<16VALUE>
min. 880 (125)/250-400<8 VALUE>min. 980 (139)/250-400< 16 VALUE>
max.
100 (14)
Timing belt “B” tension mm (in.)
5
- 7 (.20-.28)
Cylinder head bolt
< 16 VALUE>mm(in.) -max. 99.4 (3.91)
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