TROUBLE SHOOTING
Note. To trouble shoot mechanical components, see appropriate table in TROUBLE SHOOTING article in GENERAL INFORMATION.
Inspection
Check dowels in cylinder block, and replace if necessary. Check cylinder head warpage. Resurface cylinder head if warpage exceeds specification. See CYLINDER HEAD table under ENGINE SPECIFICATIONS. DO NOT machine more than .010" (.25 mm) from original cylinder head surface.
Inspect lifter for damage. Ensure roller rotates smoothly. Measure lifter O.D. and cylinder block lifter bore I.D. Replace components if oil clearance is not within specification. See VALVE LIFTERS table under ENGINE SPECIFICATIONS.
Inspect components for damage. Check camshaft journal diameter, lobe lift and oil clearance. Replace components if damaged or not within specification. See CAMSHAFT table under ENGINE SPECIFICATIONS.
Inspect components for damage. Measure rotor end play and outer rotor-to-housing clearance. Measure relief valve-to-bore clearance and relief valve spring tension. Replace oil pump assembly if measurements are not within specification. See OIL PUMP SPECIFICATIONS table.
Note. Oil pump is serviced as an assembly only. Replace assembly if measurements are not within specifications. See OIL PUMP SPECIFICATIONS table.
| Application | Specification In. (mm) |
|---|---|
| Outer Rotor-To-Housing Clearance | .006-.020 (.02-.51) |
| Rotor End Play | .0014-.0044 (.036-.112) |
| Shaft-To-Housing Clearance | .0015-.0030 (.038-.076) |
| Relief Valve Spring Tension | (1) |
| Relief Valve-To-Bore Clearance | .0015-.0030 (.038-.076) |
| (1) Spring tension is 13.6-14.7 lbs. @ 1.39" (6.2-6.7 kg @ 35 mm). | |
| (1) | Spring tension is 13.6-14.7 lbs. @ 1.39" (6.2-6.7 kg @ 35 mm). |
OIL PUMP SPECIFICATIONS