Oil Pump Assembly
OIL PUMPComponents
Disassembly
1. Remove O-ring from oil pump housing.
2. Remove five bolts and remove reaction shaft support from housing.
3. Remove oil pump drive and driven gears from pump housing.
4. Make reassembly alignment marks on drive and driven gear.
5. Remove steel ball from housing.
6. Remove the snap ring and the oil seal from the oil pump drive gear.
7. Remove two seal rings from reaction shaft support.
Inspection
1. Measure side clearance of the oil pump gear. If clearance exceeds the standard value, or if an inspection of the surface (of the oil pump housing) that contacts the oil pump gear indicates interference, replace the entire oil pump assembly.
Standard value:
Oil pump gear side clearance
0.01 - 0.048 mm (0.0004 - 0.0019 inch)
2. Check the surface of the reaction shaft support that contacts the oil pump gear. If there are indications of interference, replace the entire oil pump assembly.
Reassembly
1. Install the oil seal to the oil pump drive gear.
2. Install the snap ring.
3. After immersing drive and driven gears in automatic transaxle fluid, install them to pump housing. When reusing gears, install with mating marks properly aligned.
4. Install steel ball in hole as shown in the illustration.
5. Install two seal rings coated with automatic transaxle fluid to reaction shaft support.
6. Make sure that oil pump gear turns freely.
7. Install new O-ring in groove provided in circumference of pump housing and apply petrolatum to circumference of O-ring.
8. Loosely install reaction shaft support on pump housing. Finger-tighten five bolts.
9. Properly position reaction shaft support on pump housing and, using special tools (09452-21301, 09452-21401), tighten five bolts to 10 - 12 Nm (100 - 120 kgf.cm, 7.5 - 8.5 ft. lbs.).
10. Pry off pump housing oil seal using a screwdriver.
11. Using special tool (09452-21200), install oil seal to pump housing. Apply thin coat of automatic transaxle fluid to oil seal lip before installation.