Mitsubishi Galant. Manual — part 69

ROCKER ARMS AND CAMSHAFT

TSB Revision

ENGINE OVERHAUL <3.0L>

11D-25

>>D<< CAMSHAFT OIL SEAL INSTALLATION
1. Apply engine oil to the lip area of the oil seal and the front

end outside diameter of the camshaft.

2. Using special tools MD998713 and MB991559 (for the left

bank only), install the camshaft oil seals.

INSPECTION

M1113005500043

CAMSHAFT
Measure the cam height. If it is below the limit, replace the
camshaft.

Standard value:

Intake 37.58 mm (1.480 inches)
Exhaust 36.95 mm (1.455 inches)

Minimum limit:

Intake 37.08 mm (1.460 inches)
Exhaust 36.45 mm (1.435 inches)

ROCKER ARM
1. Check the roller surface. If any dents, damage or seizure is

evident, replace the rocker arm.

2. Check rotation of the roller. If it does not rotate smoothly or if

looseness is evident, replace the rocker arm.

3. Check the inside diameter. If damage or seizure is evident,

replace the rocker arm.

AKX00615

<RIGHT BANK SIDE>

MD998713

AB

AKX00639

<LEFT BANK SIDE>

MB991559

AB

MD998713

AKX00685

AKX00723

ROLLER TIP

AB

ROCKER ARMS AND CAMSHAFT

TSB Revision

ENGINE OVERHAUL <3.0L>

11D-26

LASH ADJUSTERS

CAUTION

•

The lash adjusters are precision-engineered
mechanisms. Do not allow them to become
contaminated by dirt or other foreign substances.

•

Do not attempt to disassemble the lash adjusters.

•

Use only fresh diesel fuel to clean the lash adjusters.

1. Prepare three containers and approximately 5 dm

3

(30.5

quart) of diesel fuel. Into each container, pour enough diesel
fuel to completely cover a lash adjuster when it is standing
upright. Then, perform the following steps with each lash
adjuster.

2. Place the lash adjuster in container A and clean its outside

surface.

NOTE: Use a nylon brush if deposits are hard to remove.

CAUTION

The steel ball spring is extremely weak, so the lash
adjuster's functionality may be lost if the air bleed wire is
pushed in hard.

3. While gently pushing down the internal steel ball using wire

[0.5 mm (0.020 inch) indiameter] or special tool MD998442,
move the plunger through five to ten strokes until it slides
smoothly. In addition to eliminating stiffness in the plunger,
this operation will remove dirty oil.

NOTE: If the plunger remains stiff or the mechanism
appears otherwise abnormal, replace the lash adjuster.

4. Remove the lash adjuster from the container. Then, push

down the steel ball gently and push the plunger to eliminate
diesel fuel from the pressure chamber.

AKX00625

OUTSIDE
CLEANING

INSIDE
CLEANING

FILLING
DIESEL FUEL

A

B

C

AB

AKX00626

DIESEL
FUEL

AB

AKX00628

WIRE OR MD998442

DIESEL FUEL

AB

AKX00629

DIESEL FUEL

AB

WIRE OR MD998442

ROCKER ARMS AND CAMSHAFT

TSB Revision

ENGINE OVERHAUL <3.0L>

11D-27

CAUTION

The steel ball spring is extremely weak, so the lash
adjuster's functionality may be lost if the air bleed wire is
pushed in hard.
5. Place the lash adjuster in container B. Then, gently push

down the internal steel ball using wire [0.5 mm (0.020 inch)
indiameter] or special tool MD998442 and move the plunger
through five to ten strokes until it slides smoothly. This
operation will clean the lash adjuster's pressure chamber.

6. Remove the lash adjuster from the container. Then, push

down the steel ball gently and push the plunger to eliminate
diesel fuel from the pressure chamber.

CAUTION

Do not use container C for cleaning. If cleaning is
performed in container C, foreign matter could enter the
pressure chamber when the chamber is filled with diesel
fuel.
7. Place the lash adjuster in container C. Then, gently push

down the internal steel ball using wire [0.5 mm (0.020 inch)
indiameter] or special tool MD998442.

8. Stand the lash adjuster with its plunger at the top, then push

the plunger downward firmly until it moves through its
greatest possible stroke. Return the plunger slowly, then
release the steel ball and allow the pressure chamber to fill
with diesel fuel.

AKX00628

WIRE OR MD998442

DIESEL FUEL

AB

AKX00629

DIESEL FUEL

AB

WIRE OR MD998442

AKX00630

WIRE OR MD998442

DIESEL FUEL

AB

AKX00631

WIRE OR MD998442

DIESEL
FUEL

AB

CYLINDER HEAD AND VALVES

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ENGINE OVERHAUL <3.0L>

11D-28

9. Remove the lash adjuster from the container, then stand the lash

adjuster with its plunger at the top. Push the plunger firmly and
check that it does not move. Also, check that the lash adjuster's
height matches that of a new lash adjuster.

NOTE: . If the lash adjuster contracts or moves, perform the
operations (7) through (9) again to fill it with diesel fuel completely.
Replace the lash adjuster if it still contracts or moves after
performing these steps.

10.Stand the lash adjuster upright to prevent diesel fuel from spilling

out. Do not allow the lash adjuster to become contaminated by dirt
or other foreign matter. Fit the lash adjuster onto the engine as
soon as possible.

C YLIN D ER H EA D A N D VA LVES

REMOVAL AND INSTALLATION

M1113006900099

AKX00627

AKX00644

108 N·m
80 ft-lb

«

Back off

«

108 N·m
80 ft-lb

1

5

2

6

7

13

3

14

9

11

16

17

19

12

15

10

21

18

22

20

8

4

N

N

N

N

N

N

N

N

AC

APPLY ENGINE OIL
TO ALL MOVING
PARTS BEFORE
INSTALLTION.