Oil Pump: Testing and Inspection

INSPECTION
TIP CLEARANCE





Measure the tip clearance of rotors. If the clearance exceeds the standard value, replace the rotors as a matched set.

CASE CLEARANCE





Measure the clearance between the outer rotor and rear chain cover rotor housing. If the clearance exceeds the standard value, replace the outer rotor.

SIDE CLEARANCE





Measure the clearance between oil pump inner rotor and rear chain cover. If the clearance exceeds the standard value, replace rotors as a matched set.

OIL PUMP CASE
Check the worn shaft hole, clogged oil passage, crank and other parts for faults.