Oil Pump: Service and Repair

Oil Pump Overhaul

Oil Pump:

Special Tools Required
^ Oil seal driver, 64 mm 070AD-RCA0100
^ Engine support hanger, A and Reds AAR-T-12566 (available through Honda Tool and Equipment program, 888-424-6857)
^ Engine hanger balance bar VSB02C000019

Removal
1. Drain the engine oil.
2. Remove the bulkhead cover.
3. Remove the windshield wiper arms, then remove the cowl cover.
4. Remove the connector bracket from the front cylinder head; use the bracket bolt hole to attach engine balancer bar front arm.
5. Remove the harness clamp bracket from the rear cylinder head; use the bracket bolt hole to attach engine balancer bar rear arm.
6. Lift and support the engine with engine hanger and engine balancer bar. Attach the front arm to the front cylinder head with a spacer and the connector bracket bolt (10 x 1.25 mm). Attach the rear arm to the rear cylinder head with the harness clamp bracket bolt (8 x 1.25 mm).
7. Remove the timing belt.
8. Remove the crankshaft position (CKP) sensor.
9. Remove the rocker arm oil control solenoid (VTEC solenoid valve) and oil filter assembly.
10. Remove the oil pan.





11. Remove the oil screen (A), then remove the oil pump (B).

Inspection
1. Remove the screws from the pump housing, then separate the housing and cover.





2. Check the inner-to-outer rotor radial clearance between the inner rotor (A) and outer rotor (B). If the inner-to-outer rotor clearance exceeds the service limit, replace the oil pump assembly.





3. Check the housing-to-rotor axial clearance between the rotors (A) and pump housing (B). If the housing-to-rotor axial clearance exceeds the service limit, replace the oil pump assembly.





4. Check the housing-to-outer rotor radial clearance between the outer rotor (A) and pump housing (B). If the housing-to-outer rotor radial clearance exceeds the service limit, replace the oil pump assembly.
5. Inspect both rotors and pump housing for scoring or other damage. Replace the parts, if necessary.
6. Apply liquid thread lock to the pump housing screws, then install the oil pump cover.
7. Check that the oil pump turns freely.

Installation
1. Remove the old oil seal from the oil pump.





2. Gently tap in the new oil seal until the special tool bottoms on the pump.
3. Remove all of the old liquid gasket from the oil pump mating surfaces, bolts, and bolt holes.
4. Clean and dry the oil pump mating surfaces.





5. Install the oil pump (A).
- 1 Apply liquid gasket, P/N 08717-0004, 08718-0001, 08718-0002, 08718-0003, or 08718-0009, evenly to the block mating surface of the oil pump.

NOTE: Do not install components if too much time has passed after applying the liquid gasket (for P/N 08718-0002, no more than 4 minutes, for all others, no more than 5 minutes). Instead, remove the old residue and reapply the liquid gasket.

- 2 Grease the lip of the oil seal, and apply oil to the new O-rings (B).
- 3 Install the dowel pins (C), then align the inner rotor with the crankshaft and install the oil pump.
- 4 Clean the excess grease off the crankshaft, and check the seal for distortion.
6. Install the oil screen (D).
7. Install the oil pan.
8. Install the rocker arm oil control solenoid (VTEC solenoid valve) and oil filter assembly.
9. Install the CKP sensor.
10. Install the idler pulley.
11. Install the timing belt.
12. Remove the engine balance bar and hanger.
13. Install the connector bracket to the front cylinder head.
14. Install the harness clamp bracket to the rear cylinder head.
15. Install the cowl cover and windshield wiper arms.
16. Install the front bulkhead cover.
17. Refill the engine with engine oil.