Oil Pump: Inspection
If oil pump is not within specifications, oil pump must be replaced as an assembly. See OIL PUMP SPECIFICATIONS table. Measure inner-to-outer rotor tip clearance with gears removed from housing and feeler gauge inserted 1/2".
OIL PUMP SPECIFICATIONS
| Application | In. (mm) | |||
|---|---|---|---|---|
| Driveshaft-to-Housing Clearance | .0015-.0030 (.038-.076) | |||
| Outer Race-to-Housing Clearance | .001-.013 (.03-.33) | |||
| Relief Valve Spring Tension (1) | ||||
| 5.0L & 5.0L HO | 10.6-12.2 @ 1.704 (4.8-5.5 @ 43.3) | |||
| 5.8L | 18.2-20.2 @ 2.49 (8.3-9.2 @ 63.3) | |||
| Inner-to-Outer Rotor Tip | .012 (.30) | |||
| Relief Valve-to-Bore | .0015-.0030 (.038-.076) | |||
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