Oil Pump

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

Oil Pump Components:

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

Checking Clearence - Between Outer Rotor And Case:

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

Measuring Clearence Between Rotors:

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.

Measuring Clearence Over Rotors:

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

Oil Pump Components:

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

Oil Pump Assembly

Inner And Outer Rotor Alignment Marks:

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