Remove the oil screen (A), then remove the oil pump (B).
L15A8 engine
L13Z3 engine
Inspection
Remove the screws from the oil pump housing, then separate the pump housing and pump cover.
Check the inner-to-outer rotor radial clearance between the inner rotor (A) and the outer rotor (B). If the inner-to-outer rotor clearance exceeds the service limit, replace the oil pump assembly.
Inner Rotor-to-Outer Rotor Radial Clearance
Standard (New):
0.06−0.16 mm (0.002−0.006 in.)
Service Limit:
0.20 mm (0.008 in.)
Check the pump housing-to-rotor axial clearance between the rotors (A) and pump housing (B). If the pump housing-to-rotor axial clearance exceeds the service limit, replace the oil pump assembly.
Housing-to-Rotor Axial Clearance
Standard (New):
0.02−0.06 mm (0.001−0.002 in.)
Service Limit:
0.15 mm (0.006 in.)
Check the pump housing-to-outer rotor radial clearance between the outer rotor (A) and the pump housing (B). If the pump housing-to-outer rotor radial clearance exceeds the service limit, replace the oil pump assembly.
Pump Housing-to-Outer Rotor Radial Clearance
Standard (New):
0.100−0.175 mm (0.0039−0.0069 in.)
Service Limit:
0.20 mm (0.008 in.)
Inspect both rotors and the pump housing for scoring or other damage. Replace the parts, if necessary.
Check that the oil pump turns freely.
Installation
Clean the O-ring groove and the mating surface of the engine block.