Removal & Installation
WARNING: This page is about a different car, the 1988 Nissan 300ZX. However, it is still accessible from the selected car via links, so may be relevant.
- Drain engine oil. Remove oil pan and remove oil pump assembly. To disassemble pump, remove pump cover and gasket.
- Remove pump gears from pump body. Remove regulator cap, valve and spring. Clean components with solvent. Inspect for wear or damage. Check OIL PUMP SPECIFICATIONS table and ensure clearances are to specification.
- If not within specification, replace gear set or entire pump assembly. Replace gasket, "O" ring and seal. Assemble pump in reverse order of disassembly. Fill pump housing with oil before installing to front cover.
OIL PUMP SPECIFICATIONS
| Application | Clearance In. (mm) |
|---|---|
| Body-to-Outer Gear | .0043-.0079 (.11-.20) |
| Inner Gear-to-Crescent | .0047-.0091 (.12-.23) |
| Outer Gear-to-Crescent | .0083-.0126 (.21-.32) |
| Housing-to-Inner Gear | .0020-.0035 (.05-.09) |
| Housing-to-Outer Gear | .0020-.0043 (.05-.11) |