Oil Pump: Inspection
- Check pump body oil seal for wear, damage or cracks. Replace oil seal (if necessary). Apply grease to oil seal lip when installing.
- Check driven gear-to-pump body clearance. Push driven gear against pump body. Measure clearance between driven gear and pump body. See Figure. Replace driven gear if clearance is not within specification. See OIL PUMP CLEARANCE SPECIFICATIONS table.
- Measure tip clearance between both gears and crescent shaped part of pump body. See Figure. Replace drive or driven gear if not within specification.
- Using feeler gauge and straightedge, measure side clearance between drive and driven gears and pump body. See Figure. Replace drive or driven gear if not within specification.
OIL PUMP CLEARANCE SPECIFICATIONS
| Application | Thickness - In. (mm) | |
|---|---|---|
| Driven Gear-To-Pump Body Clearance | ||
| Standard | .0028-.0059 (.071-.150) | |
| Maximum | .012 (.31) | |
| Gear-To-Crescent Clearance | ||
| Standard | .0043-.0055 (.109-.140) | |
| Maximum | .012 (.31) | |
| Gear Side Clearance | ||
| Standard | .0008-.0020 (.020-.051) | |
| Maximum | .0039 (.100) | |