Oil Pump: Service and Repair

Oil Pump





REMOVAL
1. Set the vehicle on a lift.
2. Remove the collector cover.
3. Disconnect the ground cable from battery.





4. Lift up the vehicle.
5. Remove the under cover.
6. Drain engine coolant.
7. Lower the vehicle.
8. Remove the radiator.
9. Remove the V-belts.
10. Remove the front chain cover.
11. Remove the timing chain assembly.
12. Remove the crank sprocket.
13. Remove the oil pump cover.





14. Remove the inner rotor and outer rotor.

INSTALLATION
1. Apply a coat of engine oil to the whole area of inner rotor and outer rotor.





2. Install the inner rotor to crankshaft and assemble the outer rotor.
3. Install the oil pump cover.
4. Tighten the bolts in the numerical order as shown in the figure.

CAUTION: Make sure that the bolt is installed in correct position.

Tightening torque: 6.4 N-m (0. 7 kgf-m, 4.7 ft-lb)





5. Install the crank sprocket.
6. Install the timing chain assembly.
7. Install the front chain cover.
8. Install the V-belts.
9. Install the radiator.
10. Lift up the vehicle.
11. Install the under cover.
12. Lower the vehicle.

INSPECTION
TIP CLEARANCE
Measure the tip clearance of rotors. If the clearance exceeds specification, replace the rotors as a matched set.
Tip clearance:
Standard 0.04 - 0.14 mm (0.0016 - 0.0055 in)





CASE CLEARANCE
Measure the clearance between the outer rotor and rear chain cover rotor housing. If the clearance exceeds the standard value, replace the outer rotor.
Case clearance:
Standard 0.110 - 0. 175 mm (0. 0043 - 0.0069 in)





SIDE CLEARANCE
Measure the clearance between oil pump inner rotor and rear chain cover. If the clearance exceeds specification, replace the rotors as a matched set.
Side clearance:
Specification 0.020 - 0.046 mm (0.0008 - 0.0018 in)





Perform the replacement part selection as follows.
^ When replacing all of inner rotor, outer rotor and rear chain cover with new parts, use those with matching identification marks as there are identification marks on those parts in the locations shown on the figure.





^ When replacing any of inner rotor, outer rotor and rear chain cover with a new part, select the suitable size from the following table so that side clearance is within the standard value.

Inner rotor





Identification Part No. Rotor thickness mm (in)
A 15015AA250 12.993 - 13.006 (0.51153 - 0.51205)
None 15015AA300 12.980 - 12.993 (0.51102 - 0.51153)
C 15015AA310 12.967 - 12.980 (0.51051 - 0.51102)

Outer rotor





Identification Part No. Rotor thickness mm (in)
A 15016AA250 12.993 - 13.006 (0.51153 - 0.51205)
None 15016AA300 12.980 - 12.993 (0.51102 - 0.51153)
C 15016AA31 0 12.967 - 12.980 (0.51051 - 0.51102)

Rear chain cover





Identification Part No. Rotor thickness mm (in)
A 13119AA020 13.026 - 13.039 (0.51295 - 0.51335)
B 13119AA050 13.013 - 13.026 (0.51232 - 0.51284)
C 13119AA060 13 - 000-13.013 (0.51181 - 0.51232)

OIL PUMP CASE
Check the worn shaft hole, clogged oil passage, crank and other parts for faults.