Oil Pump
OIL PUMPCOMPONENTS:
DISASSEMBLY
1. REMOVE FRONT OIL PUMP BODY O-RING
(a) Remove the O-ring from the oil pump.
2. FIX OIL PUMP ASSEMBLY
(a) Place the oil pump body on the torque converter clutch.
3. REMOVE CLUTCH DRUM OIL SEAL RING
(a) Remove the 3 oil seal rings.
4. REMOVE STATOR SHAFT ASSEMBLY
(a) Remove the 14 bolts and the stator shaft from the oil pump body.
5. REMOVE FRONT OIL PUMP BODY O-RING
(a) Remove the O-ring from the oil pump body.
(b) Remove the oil pump body from the torque converter clutch.
6. INSPECT FRONT OIL PUMP BODY SUB-ASSEMBLY
7. INSPECT STATOR SHAFT ASSEMBLY
8. INSPECT CLEARANCE OF OIL PUMP ASSEMBLY
9. REMOVE FRONT OIL PUMP DRIVE GEAR
(a) Remove the front oil pump drive gear.
10. REMOVE FRONT OIL PUMP DRIVEN GEAR
(a) Remove the front oil pump driven gear.
11. REMOVE FRONT OIL PUMP OIL SEAL
(a) Using a screwdriver, pry out the oil seal.
NOTICE: Do not damage the bushing and the oil pump body.
INSPECTION
1. INSPECT FRONT OIL PUMP BODY SUB-ASSEMBLY
(a) Using a caliper gauge, measure the inside diameter of the oil pump body bushing.
Maximum inside diameter: 38.138 mm (1.5015 in.)
If the inside diameter is greater than the maximum inside diameter, replace the oil pump body.
2. INSPECT STATOR SHAFT ASSEMBLY
(a) Using a dial indicator, measure the inside diameter of the stator shaft bushing.
Maximum inside diameter:
Front side: 21.527 mm (0.8475 in.)
Rear side: 32.03 mm (1.261 in.)
If the inside diameter is greater than the maximum inside diameter, replace the stator shaft.
3. INSPECT CLEARANCE OF OIL PUMP ASSEMBLY
(a) Push the driven gear to one side of the pump body.
(b) Using a feeler gauge, measure the clearance.
Standard body clearance: 0.10 to 0.17 mm (0.0039 to 0.0067 in.)
If the body clearance is greater than the standard clearance, check the drive gear, the driven gear and the pump body.
(c) Using a feeler gauge, measure the clearance between the driven gear teeth and the drive gear teeth.
Standard tip clearance: 0.070 to 0.150 mm (0.0028 to 0.0059 in.)
If the tip clearance is greater than the standard clearance, check the drive gear, the driven gear and the pump body.
(d) Using a steel straightedge and a feeler gauge, measure the side clearance of both gears.
Standard side clearance: 0.03 to 0.05 mm (0.0012 to 0.002 in.)
HINT: There are 7 different thicknesses for the drive and driven gears.
Drive and driven gears thickness:
If the side clearance is greater than the standard thickness, check the drive gear, the driven gear and the pump body.
4. INSPECT OIL PUMP DRIVE GEAR ROTATION
(a) Make sure that the drive gear rotates smoothly.
(b) Remove the oil pump assembly from the torque converter.
REASSEMBLY
1. INSTALL FRONT OIL PUMP OIL SEAL
(a) Using SST and a hammer, tap in a new oil seal.
HINT: The oil seal end should be flush with the outer edge of the pump body.
SST 09350-30020 (09351-32140)
(b) Coat the lip of the oil seal with MP grease.
2. FIX FRONT OIL PUMP BODY SUB-ASSEMBLY
(a) Place the oil pump body on the torque converter clutch.
3. INSTALL FRONT OIL PUMP DRIVEN GEAR
(a) Coat the driven gear with ATF.
(b) Install the driven gear to the oil pump body.
4. INSTALL FRONT OIL PUMP DRIVE GEAR
(a) Coat the drive gear with ATF.
(b) Install the drive gear to the oil pump body.
5. INSTALL FRONT OIL PUMP BODY O-RING
(a) Install a new O-ring to the oil pump body.
6. INSTALL STATOR SHAFT ASSEMBLY
(a) Align the stator shaft with each bolt hole.
(b) Install the 14 bolts.
Torque: 11 N*m (110 kgf*cm, 8 ft.*lbf)
7. INSTALL CLUTCH DRUM OIL SEAL RING
(a) Coat 3 new oil seal rings with ATF.
(b) Squeeze the ends of the 3 oil seal rings so that the gap distance becomes 8 mm or less, and then install them to the stator shaft groove.
NOTICE: Do not expand the ring ends excessively.
HINT: After installing the oil seal rings, check that they rotate smoothly.
8. INSPECT OIL PUMP DRIVE GEAR ROTATION
9. INSTALL FRONT OIL PUMP BODY O-RING
(a) Install a new O-ring to the oil pump.