Oil Pump

COMPONENTS

DISASSEMBLY OF OIL PUMP




1. USE TORQUE CONVERTER AS WORK STAND
2. REMOVE O-RING




3. REMOVE TWO OIL SEAL RINGS




4. REMOVE STATOR SHAFT
Remove the thirteen bolts, and then remove the stator shaft from the oil pump body.




5. REMOVE OIL PUMP DRIVE GEAR AND DRIVEN GEAR

INSPECTION OF OIL PUMP




1. CHECK OIL PUMP BODY BUSHING
Using a dial indicator, measure the inside diameter of the oil pump body bushing.

Maximum inside diameter: 38.19 mm (1.5035 in.) If the inside diameter is greater than the maximum, replace the oil pump body.




2. CHECK STATOR SHAFT BUSHING
Using a dial indicator, measure the inside diameter of the stator shaft bushing.

Maximum inside diameter:
Front side 21.58 mm (0.8496 in.)
Rear side 27.08 mm (1.0661 in.)

If the inside diameter is greater than the maximum, replace the stator shaft.




3. 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: 0.07 0.15 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 drive gear, driven gear or pump body.




4. CHECK TIP CLEARANCE OF BOTH GEARS
Measure between the gear teeth and the cresent-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 drive gear, driven gear or pump body.




5. 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 side clearance is greater than the maximum, replace the drive gear, driven gear or pump body.




6. CHECK OIL SEAL
Check for wear, damage or cracks.

7. IF NECESSARY, REPLACE OIL SEAL
a. Pry off the oil seal with a screwdriver.




b. Using SST, install a new oil seal.
The oil seal end should be flush with the outer edge of the pump body.

SST 09350 - 30020 (09351 - 32140)

c. Coat the oil seal lip with MP grease.

ASSEMBLY OF OIL PUMP




1. INSTALL DRIVEN GEAR AND DRIVE GEAR TO OIL PUMP BODY
a. Place the oil pump body on the torque converter.
b. Coat the driven gear and drive gear with ATF.
c. Install the driven gear and drive gear.




2. INSTALL STATOR SHAFT TO OIL PUMP BODY
a. Align the stator shaft with each bolt holes.
b. Tighten the thirteen bolts.

Torque: 100 kg.cm (7 ft.lb, 10 N.m)




3. INSTALL TWO OIL SEAL RINGS
a. Coat the oil seal rings with ATF.
b. Contract the oil seal rings as shown, and install them onto the stator shaft.

CAUTION: Do not spread the ring ends too much.

NOTE: After installing the oil seal rings, check that they move smoothly.




4. INSTALL NEW O-RING
Coat a new O-ring with ATF and install it to the oil pump body.




5. CHECK OIL PUMP DRIVE GEAR ROTATION
Make sure the drive gear rotates smoothly when installed to the torque converter.