Oil Pump: Service and Repair

REMOVAL AND INSTALLATION













- MB991346: Top Cover Wrench

REMOVAL SERVICE POINT

[[A]] ENGINE OIL PUMP SPROCKET CENTER BOLT REMOVAL





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. After removing the engine oil pump sprocket center bolt, disconnect the engine oil pump sprocket from the engine oil pump assembly while the engine oil pump sprocket is installed in the engine oil pump drive chain.

INSTALLATION SERVICE POINT

]]A[[ ENGINE OIL PUMP SPROCKET CENTER BOLT INSTALLATION

1. Install the engine oil pump sprocket in the engine oil pump assembly while the engine oil pump sprocket is installed in the engine oil pump drive chain.





2. Hold the engine oil pump sprocket with special tool MB991346 in the same manner as removal.
3. Tighten the engine oil pump sprocket center bolt to the specified torque.
Tightening torque: 23± 2Nm (17± 1 ft-lb)
4. Remove the tie-wrap securing the engine oil pump sprocket and engine oil pump drive chain to prevent the slippage between them.