Inspection

1. Check oil pump case for damage and remove rear cover.

Figure 112:

2. Remove pump rotors and inspect case for excessive wear.

Figure 113:

3. Insert the rotor into the oil pump case and measure clearance with a feeler gauge as indicated. Replace if out of limits.

Figure 114:

4. Using a feeler gauge, measure clearance between inner rotor tip and outer rotor. Clearance specification is: 0.06 - 0.18 mm (0.0024 - 0.0071 inch). Replace if out of limits.

Figure 115:

5. Place a straightedge across face of pump housing. Clearance should be between 0.04 - 0.10 mm (0.0015 - 0.0039 inch). Replace if out of limits.

OIL RELIEF PLUNGER

Figure 112:

1. Check that the oil relief plunger slides smoothly.
2. Check for broken relief spring.

OIL PUMP ASSEMBLY

Figure 116:

1. Assemble pump, using new parts as required with clean oil. Align marks on the inner and outer rotors when assembling.
2. Install cover and tighten screws to 12 Nm (105 inch lbs.).

Figure 112:

3. Install relief valve, spring, gasket and cap as shown. Tighten cap to 41 Nm (30 ft. lbs.).