Mitsubishi Evolution X. Manual — part 250

OIL PUMP CHAIN

TSB Revision

ENGINE LUBRICATION

12-11

REMOVAL SERVICE POINT

.

<<A>> ENGINE OIL PUMP SPROCKET CENTER
BOLT/ENGINE OIL PUMP DRIVE CHAIN AND
ENGINE OIL PUMP SPROCKET REMOVAL

AC611491

MB991346

AB

1. Hold the engine oil pump sprocket with special tool

MB991346.

2. Loosen the engine oil pump sprocket center bolt and

remove the engine oil pump drive chain and engine oil pump
sprocket.

INSTALLATION SERVICE POINTS

.

>>A<< CRANKSHAFT SPROCKET INSTALLATION

AC705022

Crankshaft sprocket

Crankshaft

AC

Engine
front

: Wipe clean with a rag.
: Wipe clean with a rag and degrease.

1. Wipe the dirt off of the crankshaft sprocket and the

crankshaft using a rag, and then remove the grease from the
portion shown in the illustration.
NOTE: Remove grease to prevent a drop in the coefficient
of friction of the pressing portion caused by adhesion of oil.

2. Set the No. 1 piston at top dead center of the compression

stroke.

3. Install the crankshaft sprocket to the crankshaft.

.

>>B<< ENGINE OIL PUMP SPROCKET/ENGINE
OIL PUMP DRIVE CHAIN INSTALLATION

1. Set the No. 1 piston at top dead center of the compression

stroke.

2. Install the engine oil pump sprocket to the engine oil pump

case.

3. Install the engine oil pump drive chain to the crankshaft

sprocket.

4. Install the engine oil pump drive chain to the engine oil pump

sprocket.

OIL PUMP

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ENGINE LUBRICATION

12-12

OIL PUMP

REMOVAL AND INSTALLATION

M1121001600054

Pre-removal and post-installation operation
• Engine Oil Pan Removal and Installation (Refer to

GROUP 11A, Oil Pan

P.11A-51

).

AC704363

23 ± 2 N·m
17 ± 1 ft-lb

26 ± 2 N·m
20 ± 1 ft-lb

2

1

AB

Removal steps

<<

A

>>

1.

Engine oil pump sprocket center
bolt

2.

Engine oil pump assembly

Required Special Tool:

• MB991346: Top Cover Wrench

OIL PUMP

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ENGINE LUBRICATION

12-13

REMOVAL SERVICE POINT

.

<<A>> ENGINE OIL PUMP SPROCKET CENTER
BOLT REMOVAL

AC705465

MB991346

AC

Tie-wrap

1. Secure the engine oil pump sprocket and the engine oil

pump drive chain with tie-wrap to prevent slippage between
the engine oil pump sprocket and the engine oil pump drive
chain.

2. Hold the engine oil pump sprocket with special tool

MB991346.

3. Remove the engine oil pump sprocket with the engine oil

pump drive chain attached.

NOTES