Oil Pump

Disassembly





1. Remove 6 bolts, oil pump cover (1), drive gear and driven gear in that order.
2. Remove oil pump cover O-ring.

Reassembly
Assemble each component by reversing removal procedure and noting the following points.
^ Before installing inner gear and outer gear to pump body, apply A/T fluid to them.





^ When installing pump cover, use care so that its splined part will not cause damage to oil seal and use specified torque to tighten it to pump body.
Tightening torque
Oil pump bolt (a): 7.5 Nm (0.75 kgf-m, 5.5 ft. lbs.)
^ When installing O-ring and oil seal, apply enough A/T fluid to them and fit them securely in groove.
^ After installation, check that inner gear turns smoothly by making use of torque converter.
^ When installing seal ring, it should not be opened more than necessary.
^ Fit claws of seal ring securely.

Inspection





^ Check seal ring (2) and bushing (1) for wear and damage.





^ Check clearance between outer gear (1) and body.
Clearance between outer gear and body
Standard: 0.07 - 0.15 mm (0.0028 - 0.0059 inch)
Service limit: 0.30 mm (0.0118 inch)





^ Check tip clearance between inner gear (1) and outer gear.
Tip clearance between inner gear and outer gear
Standard: 0.11 - 0.14 mm (0.0043 - 0.0055 inch)
Service limit: 0.30 mm (0.0118 inch)

NOTE: Measure with torque converter installed.





^ Check side clearance between inner gear/outer gear and pump body.
Side clearance between inner gear/outer gear and pump body
Standard: 0.02 - 0.05 mm (0.0008 - 0.0020 inch)
Service limit: 0.1 mm (0.0039 inch)