Oil Pump: Service and Repair

Oil Pump Overhaul

Oil Pump:

Exploded View

Special Tools Required
- Oil seal driver, 64 mm 070AD-RCAA100

Removal
1. Drain the engine oil.
2. Remove the timing belt.
3. Remove the crankshaft position (CKP) sensor A/B.
4. Attach the chain hoist to the engine hanger on the power steering (P/S) pump bracket.
5. Remove the jack from under the oil pan.
6. Remove the VTEC solenoid valve and oil filter assembly.
7. Remove the oil pan.





8. Remove the oil screen (A).
9. Remove the mounting bolts and the oil pump assembly (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 crankshaft oil seal from the oil pump.





2. Gently tap in the new crankshaft oil seal until the special tool bottoms on the pump.
3. Remove any 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, 08718-0003, or 08718-0009, evenly to the engine block mating surface of the oil pump.

NOTE: Do not install the parts if 4 minutes or more have elapsed since applying liquid gasket. Instead, re-apply liquid gasket after removing the old residue.

- 2 Grease the lip of the oil seal, and apply oil to the new O-ring (B).
- 3 Install the dowel pins, 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. Apply oil to the new O-ring (D), then install the oil screen (E).
7. Install the oil pan.
8. Install the VTEC solenoid valve and oil filter assembly.
9. Install the CKP sensor A/B.
10. Install the timing belt.
11. Remove the chain hoist.
12. After assembly, wait at least 30 minutes before filling the engine with oil.