Oil Pump: Service and Repair

Oil pump, replacing

Special tools:
999 5304 SEPARATOR 999 5304 Separator
999 5919 PULLER 999 5919 Puller
999 5455 PUNCH 999 5455 Punch
999 5433 COUNTERHOLD 999 5433 Counterhold

Removal

Note! As the illustrations in this service information are used for different model years and / or models, some variation may occur. However, the essential information in the illustrations is always correct.

Preparation
Remove the timing belt. See Timing belt, replacing Removal and Replacement.
Check the tensioner and idler pulleys. See Timing belt, replacing Removal and Replacement.




Carefully pull crankshaft timing gear pulley free. Use puller 999 5304 SEPARATOR 999 5304 Separator.

Removing oil pump




Remove the four oil pump screws.
Carefully pry upward diagonally between the stop lugs and the cylinder block.
Lift out the oil pump.

Installation

Note! For tightening torques, see Specifications, B6324S Tightening Torque.

Installing the oil pump




Install a new gasket.
Carefully insert the oil pump over the end of the crankshaft.

Note! The sealing ring in the oil pump is very easy to damage if not installed correctly.

Install four new screws as a guide.
Pull in the oil pump with drift 999 5455 PUNCH 999 5455 Punch and the crankshaft center nut.
Tighten the oil pump screw. Tighten to 10 Nm.
Install the timing gear pulley. Carefully tap alternately around the timing gear pulley until reaching its end position.

Note! The timing gear pulley can only be in one position on the crankshaft end splines.

Finishing




Install a new timing belt. See Timing belt, replacing Removal and Replacement.
Install the pulley for the auxiliaries belt. Locate the steering gear on the locating pin in the timing gear pulley.
Install the auxiliaries belt.
Install counterhold 999 5433 COUNTERHOLD 999 5433 Counterhold.
Tighten crankshaft center nut. See Tightening torque, B6324S Tightening Torque.
Install the vibration damper. See Tightening torque, B6324S Tightening Torque. Use the crankshaft center nut as a counterhold.

Final check
Check the engine oil level. Top up if necessary.
Test drive the engine.