Oil Pump Drive Shaft: Service and Repair

REMOVAL AND INSTALLATION













- MB991346: Top Cover Wrench

REMOVAL SERVICE POINT

[[A]] ENGINE OIL PUMP SPROCKET BOLT/ENGINE OIL PUMP DRIVE CHAIN AND ENGINE OIL PUMP SPROCKET REMOVAL





1. Hold the engine oil pump sprocket with special tool MB991346.
2. Loosen the engine oil pump sprocket bolt and remove the engine oil pump drive chain and engine oil pump sprocket.

INSTALLATION SERVICE POINTS

]]A[[ CRANKSHAFT SPROCKET INSTALLATION





1. Wipe off the dirt off the crankshaft sprocket and crankshaft as shown in the figure using a rag, and then degrease the areas.
NOTE:
Degrease to prevent a drop in the coefficient of friction of the pressing portion caused by adhesion of oil.

2. Install the crankshaft sprocket to the crankshaft.

]]B[[ ENGINE OIL PUMP SPROCKET/ENGINE OIL PUMP DRIVE CHAIN INSTALLATION

1. Install the engine oil pump sprocket to the engine oil pump assembly.

2. Install the engine oil pump drive chain to the crankshaft sprocket.

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

]]C[[ ENGINE OIL PUMP SPROCKET BOLT INSTALLATION





1. Hold the engine oil pump sprocket with special tool MB991346 in the same manner as removal.
2. Tighten the engine oil pump sprocket bolt to the specified torque.
Tightening torque: 23± 2Nm (17± 1 ft-lb)