MITSUBISHI GALANT 1989 Service Owners Manual

ENGINE - Timina Belt11-41
I
I
(3) Turn the crankshaft clockwise by two teeth of the
camshaft sprocket.
Caution
As the purpose of this procedure is to apply the
proper amount of tension on the timing belt, be sure
not to rotate the crankshaft counter-clockwise or
place pressure on the belt to check the amount of
tension.
Tensioner
spacer
OlR0404
(4) Apply force on tensioner toward turning direction, (inthe direction of the arrow) such that no portion of the
belt raises out in portion A, place the belt on the
camshaft sprocket such that the belt sprocket teeth
are fully engaged.
(5) Tighten the tensioner installation bolt and tensioner spacer in that order.
Caution
If the tensioner spacer is tightened first, the ten-
sioner will rotate with it and belt tension be thrown
out of adjustment. Always tighten the bolt first.
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(6) Check to see that the clearance between the outside of the belt and the cover are within the standard value
by grasping the tension side (between the camshaft
sprocket and oil pump sprocket) of the centre part of
the timing belt between the thumb and index finger.
Standard value: 14 mm
(.55 in.)
6 x 20(23 x .78)
6 x 20(23 x .78)
6 x 25t.23 x ,981
11. INSTALLATION OF TIMING BELT FRONT LOWER COV- ER/9.
TIMING BELT FRONT UPPER COVER
Note that the timing belt lower and upper cover attaching
bolts differ in size from one place to another.
Bolt diameter
x length
mm (in.)6x 20t.23 x ,781011672

11-42
ENGINE - Timing Belt
TIMING BELT
REMOVAL AND INSTALLATION
MIlKA-A
Pre-removal Operation
l Removal of under cover
8-10 Nm6-7 ftlbs.
4
’‘\ 50-65
Nm
36-47
ft.lbs.\
IO-12 Nm7-9 ftlbs.
\
\
ft.lbs.’3Q ’23-27 Nm
17-20 ft.lbs.
Removal steps
1.
2.
Clamp for
pressure
hose (power steering)
and high pressure hose (air conditioning) Engine mount bracket
Drive belt (generator) Drive belt (power steering)
Tensioner pulley bracket Drive belt (air conditioning)
Water pump pulley Crankshaft pulley
Timing belt front upper cover
Timing belt front lower cover
Auto tensioner
Timing belt OlA0677
::5.6.
i:9.10.11.
12.
13.14.Tensioner pulley
Tensioner arm
15.
::16.
17.
18.
19.
20.
21.
22.
4*23.
24.
25.
27.
28.
29.
idle pulley
Camshaft sprocket
Oil pump sprocket
Crankshaft sprocket bolt
Special washer Crankshaft sprocket
FlangeTiming belt tensioner “B”
Timing belt “B”
Right silent shaft sprocket Spacer
Kky
Engine support bracket bolt
Timing belt under cover
P
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ENGINE - Timing BeltII-43
+/@Service Adjustment Procedures
24?5
20-;7 Nmio
14-20 ft.lbs.\ is\ i7
Nm50-60 Nm80-94 ft.lbs.36-43 ft.lbs.
Installation steps
29. Timing belt under cover
l +28. Engine support bracket bolt
27. Keyea26. Crankshaft sprocket “6”l +25. Spacer24. Right silent shaft sprocket
22. Timing belt tensioner “B”
l +23. Timing belt
“B”l *Adjustment of timing belt “B” tension1)421. Flangel +20. Crankshaft sprocket19. Special washer
18. Crankshaft sprocket bolt
17. Oil pump sprocket
16. Camshaft sprocket
15. Idle pulley
l al
1. Auto tensioner
14. Tensioner arm 1)+13.
Tensioner pulley
ftlbs.
OlAO682
l +I 2. Timing beltl *Adjustment of timing belt tension
l 41 0. Timing belt front lower cover
I)+ 9. Timing belt front upper cover 8. Crankshaft pulley
7. Water pump pulley
6. Drive belt (air conditioning) (Refer to
P.ll-12.)5. Tensioner pulley bracket
4. Drive belt (power steering) (Refer to
P.l l-l 2.)3. Drive belt (generator) (Refer to P.l l-l 2.)
2. Engine mount bracket
I. Clamp for pressure hose (power steering) and high pressure hose (air conditioning)
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ENGINE - Timing Belt
A Timing
mark
Timingmark
mark
-/Crank&aft swocketOlA0667 lEN0017SERVICE POINTS OF REMOVAL
MllKBDG
2. REMOVAL OF ENGINE MOUNT BRACKET
(1) With a wooden block placed against the oil pan part ofthe engine, jack up the vehicle.
Caution
Jack up gently, so as not to apply a load to the va-
rious parts.
(2) Remove the engine mount bracket.
11. REMOVAL OF AUTO TENSIONER
(1) Turn the crankshaft clockwise and align the timing marks so as to bring the
No.1 cylinder to compression
top-dead-centre position. At this time the timing marks of the camshaft sprocket
-and the upper surface of the cylinder head should coin- cide, and the dowel pin of the camshaft sprocket
should be at the upper side.
Caution
The crankshaft must always be rotated clockwise.
(2) Remove the auto tensioner.
12. REMOVAL OF TIMING BELT
Make a mark on the back of the timing belt indicating the
direction of rotation so it may be reassembled in the same
direction if it is to be reused.
Caution
Water or oil on the belt shorten its life drastically, so
the removed timing belt, sprocket, and tensioner must be free from oil and water. These parts should
not be washed. Replace parts if seriously contami-
nated.
If there is oil or water on each part check the front
case oil seals, camshaft oil seal and water pump for
leaks.
16. REMOVAL OF CAMSHAFT SPROCKET
(1) Rotate the crankshaft in the forward (right) direction
and align the timing mark.
Caution
The crankshaft must always be rotated in the for-
ward direction only.
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ENGINE - Timinn Belt
11-45
sprocket
vlGVO001 MD998754
vlB990767-01
-
&
00B00°
(2) Tie the camshaft sprocket and timing belt with a cord
so that the position of the camshaft sprocket will not
move with respect to the timing belt.
(3) Use the special tool to remove the camshaft sprocket with the timing belt attached.
Caution
After removing the camshaft sprocket, be sure not
to rotate the crankshaft.
17. REMOVAL OF OIL PUMP SPROCKET
(1) Remove the plug on the side of the cylinder block.
(2) Insert a Phillips screwdriver [shank diameter 8 mm
(31
in.)] to block the left silent shaft.
(3) Remove the oil pump sprocket nut.
(4) Remove the oil pump sprocket.
23. REMOVAL OF TIMING BELT “B”
Make a mark on the back of the timing belt indicating the
direction of rotation so it may be reassembled in the same
direction if it is to be reused.
Caution
Water or oil on the belt shorten its life drastically, so
the removed timing belt, sprocket, and tensioner
must be free from oil and water. These parts should
not be washed. Replace parts if seriously contami-
nated.
If there is oil or water on each part check the front
case oil seals, camshaft oil seal and water pump for
leaks.
INSPECTIONMl 1 KCAD
TIMING BELTS
The timing belts must be checked closely. Should the following
defects be evident, replace the belt with a new one.
(1) Hardened back surface rubber Glossy, non-elastic, and so hard that no mark is produced
even when scratched by a fingernail.
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. .CrackII-46ENGINE - Timing Belt
(2) Cracked back surface rubber.
(3) Cracked or separated canvas.
(4) Cracked tooth bottom.
(5) Cracked side.
Separation
Crack
’7EN207
Rounded belt side
Abnormal wear (fluffy canvas fiber)
7EN208
Rubber
exposed
Tooth mlsslng
and
canvas fiber exposed
7EN209
6EN0159
c \/Ga//
@E3%00
t 6EN0280(6) Abnormal wear on side.
NOTE
Normal belt should have clear-cut sides as if cut by a sharp
knife.
(7) Abnormal wear on teeth.
Initial stage:Canvas on load side tooth flank worn (Fluffy canvas fib-
ers, rubber gone and color changed to white, and un-
clear canvas texture)
Final stage: Canvas on load side tooth flank worn down and rubber
exposed (tooth width reduced)
(8) Missing tooth.
TENSIONER PULLEY AND IDLER PULLEY
(1) Turn the pulleys to check for possible binding, excessive
play, and unusual noise. Replace the pulley if any of these
defects is evident.
(2) Replace if there is a grease leak.
AUTO TENSIONER
(1) Check the auto tensioner for possible leaks and replace as
necessary.
(2) Check the rod end for wear or damage and replace as necessary.
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ENGINE - Timing BeltII-47
~7 12
rym
I
(.47 In.)-0
io
‘0
6EN0161
/
AL
@
Plug
6EN0281
Crankshaft
sprocket “B” (3) Measure the rod protrusion. If it is out of specification,
replace the auto tensioner.
Standard value: 12 mm
(.47 in.)
(4) Using a vise with soft jaws push in the auto tensioner rod. If the rod can be easily retracted, replace the auto
tensioner. You should feel a fair amount of resistance when
pushing the rod in.
Caution
1.Clamp the auto tensioner in the vise so it maintains
a level position.
2. If the plug at the bottom of the auto tensioner protrudes, surround it with a plain washer as
illustrated to prevent the plug from being in direct
contact with the vise.
SERVICE POINTS OF INSTALLATION
M1lKDCF
28. INSTALLATION OF ENGINE SUPPORT BRACKET
BOLT
Apply sealant to the bolt shown in the figure and tighten it
to the specified torque.
Specified sealant: 3M ATD Part No.8660
or equivalent
26. INSTALLATION OF CRANKSHAFT SPROCKET “B”
Install the crankshaft sprocket “B” as shown while paying
attention to its direction.
Crankshaft
6EN304
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II-48ENGINE - Timing BeltSoacer
ChaAfered
Silent shaftnsprocket
Center of
tensioner
pulley
Center of
installation bolt
installation bolt
01Aoo39-
1
25. INSTALLATION OF SPACER
(1) Apply a thin coat of engine oil to the outer circumfer-
ence of the spacer.
(2) Install the spacer with the chamfered end facing the oil
seal.
NOTE
If the spacer is installed adversely, the oil seal may be
damaged, resulting in the oil leaks.
23. INSTALLATION OF TIMING BELT “B”
(1) Ensure that crankshaft sprocket “B” timing mark and the silent shaft sprocket timing mark are aligned.
(2) Fit timing belt “B” over crankshaft sprocket “B” and the silent shaft sprocket. Ensure that there is no slack in
the belt.
. ADJUSTMENT OF TIMING BELT “B” TENSION (1) Temporarily fix the timing belt “B” tensioner such thatthe center of the tensioner pulley is to the left and
above the center of the installation bolt, and temporarily
attach the tensioner pulley so that the flange is toward
the front of the engine.
(2) Holding the timing belt “B” tensioner up with your finger in the direction of the arrow, place pressure on
the timing belt so that the tension side of the belt is
taut. Now tighten the bolt to fix the tensioner.
Caution
When tightening the bolt, ensure that the tensioner
pulley shaft does not rotate with the bolt. Allowing
it to rotate with the bolt can cause excessive
tension on the belt.
(3) To ensure that the tension is correct, depress the belt (point A) with a finger. If not, adjust.
Standard value: 5-7 mm (.20-.28
in.)
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ENGINE - Timing BeltII-49
Crankshaft
sprocket “B”
/
Crankshaft/\ \sprocket Flange Crankshaft 6~~~72
Plain washer-J
26
@
Plug
6EN0281
I
21. INSTALLATION OF FLANGE
Install the flange in correct direction as shown.
Caution Pay special attention to the direction of the flange. If it
is installed in the wrong direction, a broken timing belt
could result.
20. INSTALLATION OF CRANKSHAFT SPROCKET Install the crankshaft sprocket in the correct direction as
shown.
Caution
Pay special attention to the direction of the flange. If it
is installed in the wrong direction, a broken timing belt
could result.
11. INSTALLATION OF AUTO TENSIONER (1) If the auto tensioner rod is in its fully extended position,reset it as follows.
@ Keep the auto tensioner level and, in that position,clamp it in the vise with soft jaws.
If the plug at the bottom of the auto tensioner
protrudes, surround it with a plain washer as illustrated to prevent the plug from being in direct
contact with the vise.
@ Push in the rod little by little with the vise until the set hole
@ in the rod is aligned with that @ in the
cylinder.
@ Insert a wire [1.4 mm (055 in.) in diameter]
into the
set holes.
@ Unclamp the auto tensioner from the vise.

ENGINE - Timing Belt
Center bolt i\ \
6EN028:
Timina mark
Timingmark
Timing mark
Crankshaft sprocket
OlAO668
(2) Install the auto tensioner.Caution
Leave the wire installed in the auto tensioner.
13. INSTALLATION OF TENSIONER PULLEY (1) Install the tensioner pulley onto the tensioner arm.
(2) Locate the pinhole in the tensioner pulley shaft to the left of the center bolt. Then, tighten the center bolt
finger-tight.
Caution
Leave the wire installed in the auto tensioner.
12. INSTALLATION OF TIMING BELT (1) Ensure that the timing marks of the camshaft sprocket,the crankshaft sprocket, and the oil pump sprocket are
all aligned.
(2) Remove the plug on the cylinder block and insert a Phillips screwdriver [shank diameter 8 mm
(.31 in.)]
through the hole. If it can be inserted as deep as 60 mm (2.4 in.) or more,
the timing marks are correctly aligned. If the inserted
depth is only
20-25 mm (.8-1.0 in.), turn the oil pump
sprocket one turn and realign timing marks. Then check
to ensure that the screwdriver can be inserted 60 mm (2.4 in.) or more. Keep the screwdriver inserted until theinstallation of the timing belt is finished.
NOTE
Step (2) is performed to ensure that the oil pump
sprocket is correctly positioned with reference to the
silent shafts.
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