Oil Pump: Testing and Inspection
Oil Pump InspectionReference: Oil Pump and Oil Pump Chain Removal and Installation
Reference: Oil Pump Disassembly and Reassembly
^ Check outer rotor, inner rotor and oil pump cases for excessive wear or damage.
^ Check relief valve for excessive wear or damage.
^ Measure free length and tension of oil relief spring.
^ Radial clearance
Measure clearance of oil pump rotor and oil pump case using thickness gauge.
Check radial clearance between outer rotor (2) and case (1), using thickness gauge (3).
If clearance exceeds its limit, replace oil pump assembly.
Radial clearance between oil pump outer rotor and oil pump case
Limit: 0.19 mm (0.0075 inch)
^ Side clearance
Using straightedge (5) and thickness gauge (4), measure side clearance. If clearance exceeds its limit, replace oil pump assembly.
