Oil Pump & Front Cover: Inspection
- Inspect components for damage. Install oil pump gears in front cover. Using feeler gauge, measure gear-to-front cover clearance between tip of teeth on each gear and front cover.
- Place a straightedge across the front cover above the oil pump gears. Using a feeler gauge, check the gear side clearance between the straightedge and both oil pump gears. Check for ridge on oil pump cover in gear operating area. Ensure relief plunger slides freely in bore. Check free length and pressure of relief plunger spring. See OIL PUMP SPECIFICATIONS table. Replace components if free length and pressure are not within specification.
OIL PUMP SPECIFICATIONS TABLE
| Application | Specification | |
|---|---|---|
| Gear Side Clearance | ||
| Drive Gear | .0031-.0055" (.080-.140 mm) | |
| Driven Gear | .0024-.0071" (.060-.180 mm) | |
| Gear-To-Front Cover Clearance Drive & Driven Gear | ||
| Standard | .0024-.0050" (.060-.120 mm) | |
| Limit | .0080" (.200 mm) | |
| Relief Plunger Spring | ||
| Free Length | 1.835" (46.60 mm) | |
| Spring Pressure | 13.4 lbs. @ 1.579" (6.1 kg @ 40.10 mm) | |