Oil Pump
OIL PUMPCOMPONENTS:
DISASSEMBLY
1. REMOVE CLUTCH DRUM OIL SEAL RING
(a) Remove the 2 clutch drum oil seal rings from the stator shaft back side.
2. REMOVE STATOR SHAFT CLUTCH DRUM THRUST WASHER
(a) Remove the stator shaft clutch drum thrust washer from the oil pump assembly.
3. REMOVE STATOR SHAFT ASSEMBLY
(a) Remove the 11 bolts and stator shaft assembly. Keep the gears in the assembled order.
4. REMOVE FRONT OIL PUMP OIL SEAL
(a) Using a screwdriver, pry off the front oil pump oil seal.
5. INSPECT OIL PUMP ASSEMBLY
6. INSPECT FRONT OIL PUMP BODY SUB-ASSEMBLY
7. INSPECT STATOR SHAFT ASSEMBLY
8. REMOVE FRONT OIL PUMP DRIVE GEAR
(a) Remove the front oil pump drive gear from the oil pump body.
9. REMOVE FRONT OIL PUMP DRIVEN GEAR
(a) Remove the front oil pump driven gear from the oil pump body.
INSPECTION
1. INSPECT OIL PUMP ASSEMBLY
(a) Inspect body clearance
(1) Push the driven gear to one side of the body. Using a feeler gauge, measure the clearance.
Standard body clearance: 0.075 to 0.150 mm (0.00295 to 0.00591 in.)
Maximum body clearance: 0.3 mm (0.012 in.)
If the body clearance is greater than the maximum, replace the oil pump body sub-assembly.
(b) Inspect tip clearance
(1) Measure the tip clearance between the driven gear teeth and crescent-shaped part of the pump body.
Standard tip clearance: 0.004 to 0.248 mm (0.00016 to 0.00976 in.)
Maximum tip clearance: 0.3 mm (0.012 in.)
If the tip clearance is greater than the maximum, replace the oil pump body sub-assembly.
(c) Inspect side clearance
(1) Using a steel straight edge and feeler gauge, measure the side clearance of both gears.
Standard side clearance: 0.02 to 0.05 mm (0.0008 to 0.0020 in.)
Maximum side clearance: 0.1 mm (0.004 in.)
If the side clearance is greater than the maximum, replace the oil pump body sub-assembly.
(d) Turn the drive gear with 2 screwdrivers and make sure it rotates smoothly.
NOTICE: Be careful not to damage the front oil pump oil seal lip.
2. INSPECT FRONT OIL PUMP BODY SUB-ASSEMBLY
(a) Using a dial indicator, measure the inside diameter of the front oil pump body sub-assembly bushing.
Maximum inside diameter: 38.18 mm (1.5031 in.)
If the inside diameter is greater than the maximum, replace the front oil pump body sub-assembly.
3. INSPECT STATOR SHAFT ASSEMBLY
(a) Using a dial indicator, measure the inside diameter of the stator shaft assembly bushings.
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 assembly.
REASSEMBLY
1. INSTALL FRONT OIL PUMP DRIVEN GEAR
(a) Make sure the top of the front oil pump driven gear are facing upward.
2. INSTALL FRONT OIL PUMP DRIVE GEAR
(a) Make sure the top of the front oil pump drive gear are facing upward.
3. INSTALL FRONT OIL PUMP OIL SEAL
(a) Using SST and a hammer, install a new front oil pump oil seal. The seal end should be flush with the outer edge of the pump body.
SST 09350-32014 (09351-32140)
4. INSTALL STATOR SHAFT ASSEMBLY
(a) Align the bolt holes of the stator shaft assembly with those of the pump body.
(b) Torque the 11 bolts.
Torque: 9.8 Nm (99 kgf/cm, 86 in. lbs.)
5. INSTALL STATOR SHAFT CLUTCH DRUM THRUST WASHER
(a) Coat the stator shaft clutch drum thrust washer with petroleum jelly.
(b) Align the tab of the stator shaft clutch drum thrust washer with the hollow of the front oil pump body.
6. INSTALL CLUTCH DRUM OIL SEAL RING
(a) Install the 2 clutch drum oil seal rings to the stator shaft back side.
NOTICE: Do not spread the ring ends more than necessary.
HINT: After installing the clutch drum oil seal rings, check that they move smoothly.
7. INSPECT OIL PUMP ASSEMBLY