Cleaning & Inspection
WARNING: This page does not describe the selected car, but rather 22 other vehicles, including the 2005 Lexus SC 430, 2005 Lexus IS 300, 2005 Lexus GS 430, 2005 Lexus GS 300, and 2004 Lexus SC 430. However, it is still accessible from the selected car via links, so may be relevant.
- Clean all components in solvent. Dry with compressed air. Inspect contact surfaces between housing and driven gear for wear. Check gears for wear and body crescent for damage. Check pump gear contact surface on stator shaft for damage and wear.
- Measure inside diameter of oil pump housing and stator shaft bushings. See Figure and Figure . Measure driven gear-to-housing clearance and gear tip clearance. Using feeler gauge and straightedge, measure gear side clearance between pump housing face and top of gears. See Figure. See OIL PUMP CLEARANCE SPECIFICATIONS table.
- If clearance(s) are not within specifications, replace worn component(s). Pump gears must be replaced as a matched set. For available gear thicknesses, see DRIVE & DRIVEN GEAR THICKNESS SPECIFICATIONS table. If bushing diameter exceeds specification, oil pump housing or stator shaft must be replaced.
OIL PUMP CLEARANCE SPECIFICATIONS
| Application | In. (mm) | |
|---|---|---|
| Gear-To-Housing | ||
| Standard | .003-.006 (.07-.15) | |
| Maximum | .012 (.30) | |
| Gear Tip Clearance | ||
| Standard | .004-.006 (.11-.14) | |
| Maximum | .012 (.30) | |
| Gear Side Clearance | ||
| Standard (V8) | .0008-.0020 (.020-.050) | |
| Standard (6-Cyl.) | .0008-.0016 (.020-.040) | |
| Maximum | .004 (.10) | |
| Housing Bushing | 1.504 (38.19) | |
| Stator Shaft Bushing (Maximum) | ||
| Front | .850 (21.58) | |
| Rear | 1.066 (27.08) | |
DRIVE & DRIVEN GEAR THICKNESS SPECIFICATIONS
| Identification Mark | In. (mm) |
|---|---|
| M | .4602-.4606 (11.690-11.699) |
| N | .4606-.4610 (11.700-11.709) |
| P | .4610-.4614 (11.710-11.720) |
| R | .4615-.4618 (11.721-11.730) |
| S | .4618-.4622 (11.731-11.740) |