Oil Pump: Service and Repair

COMPONENTS

DISASSEMBLY





1. Use the special tool (09260-32000) to remove the oil pressure switch.

NOTE: Since a sealant is used on the threaded area, be careful not to damage the oil pressure switch.

2. Remove the oil filter and the oil pan.
3. Remove the oil screen and gasket.
4. Remove the three bracket securing bolts and remove the oil filter bracket and gasket.
5. Remove the oil relief valve plug from the oil pump case.
6. Remove the oil pump case.

INSPECTION
Oil Pump





1. Visually check the parts of the oil pump case for cracks and damage.





2. Assemble the rotor on the oil pump and then check the clearance with a thickness gauge.

Oil pump side clearance:
Standard value:
Body clearance: 0.100 - 0.181 mm (0.0039 - 0.0071 inch)
Side clearance: 0.040 - 0.095 mm (0.0016 - 0.0037 inch)

Relief Plunger and Spring
1. Check the relief plunger for smooth operation.
2. Check the relief spring for a deformed or broken condition.

Oil Filter Bracket
1. Make sure that there is no damage on the oil filter installation surface.
2. Check the oil filter bracket for oil leaks or cracks.

Oil pressure Switch





1. Check the continuity between the terminal and the body with an ohmmeter. If there is continuity, replace the oil pressure switch.





2. Check the continuity between the terminal and the body when the fine wire is pushed. If there is continuity even when the fine wire is pushed, replace it.
3. Or, if there is no continuity when a 50 kPa (7 psi) vacuum is applied through the oil hole, the switch is operating properly. Check that air doesn't leak. If air leaks, the diaphragm is broken, and replace it.

REASSEMBLY





1. Install the oil pump case with the gasket.

Tightening torque:
Oil pump case bolt: 12 - 15 Nm (120 - 150 kgs.cm, 9 - 10 ft. lbs.)
Oil pump cover screw: 8 - 12 Nm (80 - 120 kgs.cm, 5.8 - 8.6 ft. lbs.)





2. Install the oil seal into the oil pump case as far as possible, using special tool (09214 - 33000).
3. Install the relief plunger and spring, and tighten the oil relief valve plug to the specified torque.

Tightening torque:
Oil relief valve plug: 40 - 50 Nm (400 - 500 kgs.cm, 29 - 36 ft. lbs.)

4. Install the oil screen and a new gasket.

Tightening torque:
Oil screen bolt: 15 - 22 Nm (150 - 220 kgs.cm, 11 - 15 ft. lbs.)





5. Clean the gasket surfaces of the cylinder block and the oil pan.
6. Apply sealant into the groove of the oil pan flange.

NOTE:
1) Make the first cut from the end of the nozzle furnished with the sealant approx. 4 mm. After applying the sealant, install the oil pan within 15 minutes.
2) Do not allow the sealant into the range A shown in the illustration on the oil pan flange.

7. Install the oil pan and tighten the bolts to the specified torque.

Tightening torque:
Oil pan bolt: 5 - 7 Nm (50 - 70 kgs.cm, 3.7 - 5.0 ft. lbs.)

8. Install oil filter bracket with a new gasket.

Tightening torque:
Oil filter bracket bolt: 12 - 15 Nm (120 - 150 kgs.cm, 9 - 10 ft. lbs.)

9. Clean the mounting surface on the oil filter bracket side. Apply a thin coat of engine oil to the oil filter O-ring. Tighten the oil filter.

Tightening torque:
Oil filter: 17 - 25 Nm (170 - 250 kgs.cm, 12 - 18 ft. lbs.)





10. Using the special tool (09260-32000), install the oil pressure switch after applying sealant to the threaded area.

Sealant: Threebond 1104 or equivalent

NOTE: Do not over torque the oil pressure switch.

Tightening torque:
Oil pressure switch: 8 - 12 Nm (80 - 120 kgs.cm, 5.8 - 8.6 ft. lbs.)