Oil Pump

OIL PUMP





Components





Oil Pump Disassembly
1. USE TORQUE CONVERTER CLUTCH AS WORK STAND





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





3. REMOVE STATOR SHAFT
Remove the 6 bolts, and then remove the stator shaft from the oil pump body.





4. REMOVE OIL PUMP DRIVE GEAR AND DRIVEN GEAR

Oil Pump Inspection





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 inch)

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 bushings.

Maximum inside diameter:
Front side 21.58 mm (0.8496 inch)
Rear side 21.58 mm (0.8496 inch)

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

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





4. 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 drive gear, driven gear or pump body.





5. CHECK SIDE CLEARANCE OF BOTH GEARS
Using a steel straight edge 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 side clearance is greater than the maximum, replace the drive gear, driven gear or pump body.
6. IF NECESSARY, REPLACE OIL SEAL





a. Pry off the oil seal with a screwdriver.





b. Using Special Service Tools (SST), install a new oil seal. The oil seal end should be flushed with the outer edge of the pump body.
SST 09350-20015 (09388-20010)
c. Coat the oil seal lip with MP grease.

Oil Pump Assembly





1. INSTALL DRIVEN GEAR AND DRIVE GEAR TO OIL PUMP BODY
a. Place the oil pump body on the torque converter clutch.
b. Coat the driven gear and drive gear with Automatic Transmission Fluid (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 bole.
b. Temporarily install the 6 bolts.
c. Install SST around the pump body and stator shaft.
SST 09350-20015 (09363-20010)





d. Tighten SST to align the pump body and stator shaft.





e. Tighten the 6 bolts.

Torque: 7.4 Nm (75 kgf.cm, 65 inch lbs.)

f. Remove SST.





3. INSTALL OIL SEAL RINGS
a. Coat the 2 oil seal rings with ATF.
b. Install 2 oil seal rings to the stator shaft, 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.





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