PROCEDURE
INSPECT OIL PUMP ASSEMBLY
Turn the drive gear with 2 screwdrivers and make sure that it rotates smoothly.
Note
Be careful not to damage the oil seal lip.
INSPECT CLEARANCE OF FRONT OIL PUMP BODY AND GEAR SUB-ASSEMBLY
Inspect the body clearance.
Push the driven gear to one side of the front oil pump body.
Using a feeler gauge, measure the front oil pump body clearance.
| Standard clearance |
|---|
| 0.075 to 0.145 mm (0.00296 to 0.00570 in.) |
| Maximum clearance |
|---|
| 0.145 mm (0.00570 in.) |
If the clearance is more than the maximum, replace the front oil pump drive gear, front oil pump driven gear or front oil pump body sub-assembly.
Inspect the side clearance.
Using a straightedge and feeler gauge, measure the side clearance of both gears.
| Standard side clearance |
|---|
| 0.025 to 0.040 mm (0.000985 to 0.00157 in.) |
| Maximum side clearance |
|---|
| 0.040 mm (0.00157 in.) |
If the clearance is more than the maximum, replace the front oil pump drive gear, front oil pump driven gear or front oil pump body sub-assembly.
Tech Tips
There are 5 different thicknesses for the front oil pump drive gear and front oil pump driven gear.
| Mark | Thickness |
|---|---|
| 1 | 11.547 to 11.555 mm (0.45461 to 0.45492 in.) |
| 2 | 11.555 to 11.563 mm (0.45493 to 0.45523 in.) |
| 3 | 11.564 to 11.571 mm (0.45528 to 0.45555 in.) |
| 4 | 11.572 to 11.579 mm (0.45559 to 0.45586 in.) |
| 5 | 11.580 to 11.587 mm (0.45591 to 0.45618 in.) |
| Mark | Thickness |
|---|---|
| 1 | 11.547 to 11.555 mm (0.45461 to 0.45492 in.) |
| 2 | 11.555 to 11.563 mm (0.45493 to 0.45523 in.) |
| 3 | 11.564 to 11.571 mm (0.45528 to 0.45555 in.) |
| 4 | 11.572 to 11.579 mm (0.45559 to 0.45586 in.) |
| 5 | 11.580 to 11.587 mm (0.45591 to 0.45618 in.) |
INSPECT FRONT OIL PUMP BODY SUB-ASSEMBLY
Using a caliper gauge, measure the inside diameter of the front oil pump body bushing.
| Standard inside diameter |
|---|
| 43.135 to 43.160 mm (1.6983 to 1.6992 in.) |
| Maximum inside diameter |
|---|
| 43.160 mm (1.6992 in.) |
If the inside diameter is more than the maximum, replace the front oil pump body sub-assembly.
INSPECT STATOR SHAFT ASSEMBLY
Using a caliper gauge, measure the inside diameter of the stator shaft bushing.
| Standard inside diameter |
|---|
| 22.500 to 22.526 mm (0.88583 to 0.88684 in.) |
| Maximum inside diameter |
|---|
| 22.576 mm (0.88882 in.) |
If the inside diameter is more than the maximum, replace the stator shaft assembly.