Inspection & Reassembly
CAUTION:
Laser marks on oil pump body indicate size of selective parts used in assembly. If correct parts are not selected for replacement, damage to oil pump and transaxle will occur.
- Inspect oil pump for the following:
- Worn, scored or gouged pump slide.
- Cracks, wear or damage to rotor or vanes.
- Cuts or damage to seals.
- Broken priming springs.
- Damaged oil pump drive shaft bearing (bearing is not serviced separately from rotor).
See Fig 1.
- Inspect oil pump body for the following:
- Porosity
- Worn, scored or damaged pump pocket.
- Interconnected oil passages.
- Damaged machined surfaces.
- Inspect pump outlet screen for damage or debris. Inspect oil pump cover for cracks, wear or gouges from pump vanes.
- Measure pump rotor, oil pump vanes and oil pump slide. See Fig 2. Select proper replacement size. See OIL PUMP COMPONENT SPECIFICATIONS table.
- Install outlet screen into oil pump body. Install slide seal support and slide seal into slot on pump slide. Install pump slide and slide pivot pin into pump body.
- Install outer and inner priming springs into pump body. Install 1st vane ring into pump body. Insert pump slide "O" ring seal and slide oil seal ring into pump slide. See Fig 1.
- Insert rotor into pump body. Install pump vanes into rotor. Pump vanes must be flush with top of rotor. Install 2nd vane ring onto rotor. Install pump cover and bolt. Tighten bolt to specification. See TORQUE SPECIFICATIONS .
OIL PUMP COMPONENT SPECIFICATIONS
| Component | Thickness - In. (mm) |
|---|---|
| Pump Rotor | .7068-.7072 (17.953-17.963) |
| .7072-.7076 (17.963-17.973) | |
| .7076-.7080 (17.973-17.983) | |
| .7080-.7084 (17.983-17.993) | |
| Pump Slide | .7070-.7074 (17.957-17.967) |
| .7074-.7078 (17.967-17.977) | |
| .7078-.7081 (17.977-17.987) | |
| .7081-.7085 (17.987-17.997) | |
| Pump Vane | .7064-.7071 (17.943-17.961) |
| .7071-.7078 (17.961-17.979) | |
| .7078-.7085 (17.979-17.997) | |
| Pump Body (Depth Measurement) | .7087-.7091 (18.000-18.010) |
| .7091-.7094 (18.010-18.020) | |
| .7094-.7098 (18.020-18.030) | |
| .7098-.7102 (18.030-18.040) | |