Drivetrain. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25
INSPECT FRONT OIL PUMP BODY
INSPECT STATOR SHAFT ASSEMBLY
INSPECT CLEARANCE OF FRONT OIL PUMP BODY
INSPECT OIL PUMP DRIVE GEAR ROTATION
| 1. INSPECT FRONT OIL PUMP BODY |
Using a dial indicator, measure the inside diameter of the oil pump body bush.
- Maximum inside diameter:
- 38.138 mm (1.50 in.)
If the inside diameter is more than the maximum, replace the oil pump body.
| 2. INSPECT STATOR SHAFT ASSEMBLY |
Using a dial indicator, measure the inside diameter of the stator shaft bush.
- Maximum Inside Diameter:
Front Side
| Rear Side
|
21.527 mm (0.847 in.)
| 27.026 mm (1.06 in.)
|
If the inside diameter is more than the maximum, replace the stator shaft.
| 3. INSPECT CLEARANCE OF FRONT OIL PUMP BODY |
Push the driven gear to one side of the body.
Using a feeler gauge, measure the body clearance.
- Standard body clearance:
- 0.07 to 0.15 mm (0.00276 to 0.00590 in.)
If the body clearance is more than the maximum, replace the drive gear, driven gear or pump body assembly. Replace the part or parts determined to be the most likely cause of the problem.
Using a feeler gauge, measure the tip clearance between the driven gear teeth and drive gear teeth.
- Standard tip clearance:
- 0.004 to 0.248 mm (0.000157 to 0.00976 in.)
If the tip clearance is more than the maximum, replace the drive gear, driven gear or pump body assembly. Replace the part or parts determined to be the most likely cause of the problem.
Using a steel straightedge and feeler gauge, measure the side clearance of both gears.
- Standard side clearance:
- 0.02 to 0.05 mm (0.000788 to 0.00196 in.)
If the side clearance is more than the maximum, replace the drive gear, driven gear or pump body assembly. Replace the part or parts determined to be the most likely cause of the problem.
- HINT:
- There are 5 different thicknesses for drive and driven gears.
- Drive and Driven Gear Thickness:
Mark
| Specified Condition
|
M
| 11.690 to 11.699 mm (0.4603 to 0.4605 in.)
|
N
| 11.700 to 11.709 mm (0.4606 to 0.4609 in.)
|
P
| 11.710 to 11.720 mm (0.4610 to 0.4614 in.)
|
R
| 11.721 to 11.730 mm (0.4615 to 0.4618 in.)
|
S
| 11.731 to 11.740 mm (0.4619 to 0.4622 in.)
|
| 4. INSPECT OIL PUMP DRIVE GEAR ROTATION |
Check that the drive gear rotates smoothly.
Remove the oil pump from the torque converter.
