Oil Pump

OIL PUMP





COMPONENTS

OIL PUMP DISASSEMBLY





1. USE TORQUE CONVERTER CLUTCH AS WORK STAND
Place the oil pump body on the torque converter clutch.





2. REMOVE OIL SEAL RINGS
Remove the 2 oil seal rings.





3. REMOVE STATOR SHAFT
a. Remove the 13 bolts, and then remove the stator shaft from the oil pump body.
b. Remove the oil pump body from the torque converter clutch.





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: 0.07 - 0.15 mm (0.0028 - 0.0059 inch)
Maximum body clearance: 0.3 mm (0.012 inch)

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 inch)
Maximum tip clearance: 0.3 mm (0.012 inch)

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 inch)
Maximum side clearance: 0.1 mm (0.004 inch)

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: 38.19 mm (1.5035 inch)

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 21.58 mm (0.8496 inch)
Rear side 27.08 mm (1.0661 inch)

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

OIL PUMP ASSEMBLY





1. INSTALL FRONT OIL SEAL
Using SST and a hammer, install a new oil seal. The seal end should be flush with the outer edge of the pump body.
SST 09350-32014 (09351-32140)





2. INSTALL DRIVEN GEAR AND DRIVE GEAR
a. Place the oil pump body on the torque converter clutch.
b. Coat the driven gear and drive gear with ATF.
c. Install the driven gear and drive gear.





3. INSTALL STATOR SHAFT TO PUMP BODY
a. Align the stator shaft with each bolt hole.
b. Tighten the 11 bolts.

Torque: 10 Nm (100 kgf.cm, 7 ft. lbs.)





4. INSTALL OIL SEAL RINGS
a. Coat the 2 oil seal rings with ATF.
b. Install the 2 oil seal rings to the stator shaft groove, then snug them down by squeezing their ends together.

NOTICE: Do not spread the ring ends too much.

HINT: After installing the oil seal rings, check that they rotate smoothly.





5. CHECK OIL PUMP DRIVE GEAR ROTATION
Make sure the drive gear rotates smoothly.