Mitsubishi Eclipse. Manual - part 879

ROCKER ARMS AND CAMSHAFT

TSB Revision

ENGINE OVERHAUL <3.0L>

11D-25

REMOVAL SERVICE POINT

.

<<A>> ROCKER ARMS AND SHAFT REMOVAL

CAUTION

If the lash adjuster is re-used, clean the lash adjuster. 
(Refer to 

P.11D-27

.)

Set special tool MD998443 to prevent the lash adjuster coming 
free and falling to the floor.

INSTALLATION SERVICE POINTS

.

>>A<< CAMSHAFT INSTALLATION
1. Apply engine oil to the camshaft journals and cams.
2. The camshaft for the right bank has a slit for driving the 

distributor at the rear end. The camshaft for the left bank has 
no slit. Be careful to install the correct camshaft in the 
correct position.

.

>>B<< LASH ADJUSTER INSTALLATION

CAUTION

If the lash adjuster is re-used, clean the lash adjuster. 
(Refer to 

P.11D-27

.)

1. Fit the lash adjuster onto the rocker arm without allowing 

diesel fuel to spill out. Fit special tool MD998443 to prevent 
the lash adjuster coming free and falling to the floor.

.

AKX00613AB

MD998443

AKX00637

SLIT (RIGHT BANK ONLY)

AB

AKX00715

MD998443

LASH
ADJUSTER

AB

ROCKER ARMS AND CAMSHAFT

TSB Revision

ENGINE OVERHAUL <3.0L>

11D-26

>>C<< ROCKER ARM, ROCKER ARM SHAFT AND 
ROCKER SHAFT SPRING INSTALLATION
1. Rotate the camshaft until the dowel pin on its front end is 

located as shown in the illustration.
NOTE: Placing the camshaft in the illustrated position mini-
mizes the amount of cam lift, making it easier to install the 
rocker arm and shaft assemblies.

2. Install the exhaust side rocker arm "C" and shaft assembly 

to the cylinder head.

3. Install the inlet side rocker arms "A" and "B" and shaft 

assembly to the cylinder head.

4. Insert the rocker shaft spring to the intake side rocker arm 

shaft as illustrated.

5. Make sure that the notch in the end of the rocker arm shaft 

is facing the direction as shown.

.

AKX00638

APPROXI-
MATELY
60˚

RIGHT BANK

LEFT BANK

APPROXI-
MATELY
70˚

AB

AKX00622

PLUG GUIDE

AB

AKX00614

ROCKER ARMS AND CAMSHAFT

TSB Revision

ENGINE OVERHAUL <3.0L>

11D-27

>>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

M1113005500195

.

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

Standard value:

<Intake> 37.71 mm (1.485 inches)
<Exhaust> 37.14 mm (1.462 inches)

Minimum limit:

<Intake> 37.21 mm (1.465 inches)
<Exhaust> 36.64 mm (1.443 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-28

LASH ADJUSTERS

CAUTION

• The lash adjusters are precision-engineered mecha-

nisms. 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) in diameter] 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