Fluid Pump: Service and Repair
NOTE: For removal and installation procedures refer to "Automatic Transmission/Transaxle, Service and Repair." Service and RepairOIL PUMP DISASSEMBLY
1. Remove oil seal rings.
Remove the 2 oil seal rings from the stator shaft back side.
2. Remove thrust washer from stator shaft back side.
3. Remove stator shaft.
Remove the 11 bolts and stator shaft. Keep the gears in assembly order.
4. Remove front oil seal.
Pry off the oil seal with a screwdriver.
OIL PUMP INSPECTION
1. Check body clearance of driven gear.
Push the driven gear to one side of the body. Using a feeler gauge, measure the clearance.
Standard body clearance: 0.070 - 0.150 mm (0.0028 - 0.0059 in.)
Maximum body clearance: 0.3 mm (0.012 in.)
If the body clearance is greater than the maximum, replace the oil pump body subassembly.
2. Check tip clearance of driven gear.
Measure between the driven gear teeth and the crescent-shaped part of the pump body.
Standard tip clearance: 0.11 - 0.14 mm (0.0043 - 0.0055 in.)
Maximum tip clearance: 0.3 mm (0.012 in.)
If the tip clearance is greater than the maximum, replace the oil pump body subassembly.
3. Check side clearance of both gears.
Using a steel straightedge and a feeler gauge, measure the side clearance of both gears.
Standard side clearance: 0.02 - 0.05 mm (0.0008 - 0.0020 in.)
Maximum side clearance: 0.1 mm (0.004 in.)
If the thickest gear cannot make the side clearance within standard specification, replace the oil pump body subassembly.
4. Check oil pump body bushing.
Using a dial indicator, measure the inside diameter of the oil pump body bushing.
Maximum inside diameter: 38.18 mm (1.5031 in.)
If the inside diameter is greater than the maximum, replace the oil pump body subassembly.
5. Check stator shaft bushings.
Using a dial indicator, measure the inside diameter of the stator shaft bushing.
Maximum inside diameter:
Front side 21.57 mm (0.8492 in.)
Rear side 27.07 mm (1.0657 in.)
If the inside diameter is greater than the maximum, replace the stator shaft.
OIL PUMP ASSEMBLY
1. Install front oil seal.
Using Special Service Tool (SST) 09350 - 32014 (09351 - 32140) and a hammer, install a new oil seal. The seal end should be flush with the outer edge of the pump body.
2. Install driven gear and drive gear.
Make sure the top of the gears are facing upward.
3. Install stator shaft to pump body.
a. Align the stator shaft with each bolt hole.
b. Torque the 11 bolts.
- Torque: 10 N.m (100 kgf-cm, 7 ft.lbf)
4. Instal thrust washer.
a. Coat the thrust washer with petroleum jelly.
b. Align the tab of the washer with the hollow of the pump body.
5. Install oil seal rings.
Install the 2 oil seal rings to the stator shaft back side.
NOTICE: Do not spread the ring ends more than necessary.
HINT: After installing the oil seal rings, check that they move smoothly.
6. Check pump drive gear rotation.
Turn the drive gear with 2 screwdrivers and make sure it rotates smoothly.
NOTICE: Be careful not to damage the oil seal lip.