Reduction Gear Bearing Preload

1. Remove transmission case and final drive assembly from converter housing.
2. Select proper thickness of reduction gear bearing adjusting shim using the following procedures.
a. Place reduction gear on transmission case as shown.
b. Place idler gear bearing on transmission case.




c. Measure dimensions "B" "C" and "D" and calculate dimension "A".

A = D - (B + C)
"A": Distance between the surface of idler gear bearing inner race and the adjusting shim mating surface of reduction gear.




- Measure dimension "B" between the end of reduction gear and the surface of transmission case.
- Measure dimension "B" in at least two places.




- Measure dimension "C" between the surface of idler gear bearing inner race and the surface of transmission case.
- Measure dimension "C" in at least two places.




- Measure dimension "D" between the end of reduction gear and the adjusting shim mating surface of reduction gear.
- Measure dimension "D" in at least two places.
- Calculate dimension "A"

A = D - (B + C)




d. Measure dimension "E" between the end of idler gear and the idler gear bearing inner race mating surface of idler gear.
- Measure dimension "E" in at least two places.

e. Calculate "T" and select proper thickness of reduction gear bearing adjusting shim using SDS table as a guide.

T = A - E
Reduction gear bearing adjusting shim: Refer to SDS, AT-308.ZZZZ




3. Install reduction gear and reduction gear bearing adjusting shim selected in step 2 - e on transmission case.
4. Press idler gear bearing inner race on idler gear.
5. Press idler gear on reduction gear.
- Press idler gear so that idler gear can be locked by parking pawl.




6. Tighten idler gear lock nut to the specified torque.
- Lock idler gear with parking pawl when tightening lock nut.




7. Measure turning torque of reduction gear.
- When measuring turning torque, turn reduction gear in both directions several times to seat bearing rollers correctly.

Turning torque of reduction gear: 0.11 - 0.69 N.m (1.1 - 7.0 kg-cm, 0.95 - 6.08 in-lb)




8. After properly adjusting turning torque, clinch idler gear lock nut as shown (only RL4F03V).