Underdrive Planetary Gear
OVERHAUL1. INSPECT UNDERDRIVE PLANETARY GEAR PRELOAD
a. Using SST, fix the U/D planetary gear assy.
SST 09387-00050
b. Using SST and a torque wrench, measure the turning torque of U/D planetary gear assy while rotating the torque wrench at 60 rpm.
SST 09387-00050
Turning torque at 60 rpm.: 0.10 - 4.41 Nm (1.0 - 45 kgf-cm, 0.9 - 39 inch lbs.)
HINT: Use a torque wrench with a fulcrum length of 160 mm (6.3 inch).
2. REMOVE UNDERDRIVE INPUT SHAFT NUT [34301C/98-4]
a. Using SST, loosen the staked part of the nut.
SST 09930-00010 (09931-00010, 09931-00020), 09387-00050
b. Clamp the U/D planetary gear in soft jaw vise.
NOTICE: Be careful not to damage the differential drive pinion.
c. Using a socket wrench, remove lock nut.
3. REMOVE CYLINDRICAL ROLLER BEARING RACE INNER [34301F/98-4]
a. Using SST, remove the cylindrical roller bearing race inner.
SST 09950-00020, 09950-00030, 09950-60010 (09951-00340)
4. REMOVE UNDERDRIVE PLANETARY GEAR ASSY [34330/98-4]
a. Using SST and press, remove the differential drive pinion, parking lock gear, counter driven gear with U/D planetary ring gear and front tapered roller bearing.
SST 09387-00050
b. Clamp the U/D planetary gear in soft jaw vise.
c. Using SST, remove the rear tapered roller bearing form the U/D planetary gear.
SST 09950-00020, 09950-00030, 09950-60010 (09951-00340)
5. REMOVE UNDERDRIVE PLANETARY RING GEAR [34341/98-4]
a. Using snap ring pliers, remove the snap ring.
b. Remove the U/D planetary ring gear from the counter driven gear.
6. INSTALL UNDERDRIVE PLANETARY RING GEAR [34341/98-4]
a. Install a new snap ring to the outer race of the tapered roller bearing.
b. Using a piston ring compressor, squeeze the snap ring.
c. Using SST a press, press in the outer race of the tapered roller bearing.
SST 09950-60020 (09951-00890), 09950-70010 (09951-07100)
d. Install the U/D planetary ring gear to the counter driven gear.
e. Using snap ring pliers, install the snap ring.
7. INSTALL UNDERDRIVE PLANETARY GEAR ASSY [34330/98-4]
a. Using a press, press in the rear tapered roller bearing to the U/D planetary gear.
NOTICE: Press in the bearing until it becomes flat at the bottom.
b. Install the counter driven gear with planetary ring gear to the U/D planetary gear.
c. Using a SST and a press, press in the front tapered roller bearing.
SST 09214-76011
NOTICE: Press in the counter driven gear while rotating it.
d. Using a press, press in the parking lock gear.
NOTICE: Press in the counter driven gear while rotating it.
e. Using a press, press in the differential drive pinion.
NOTICE: Press in the counter driven gear while rotating it.
8. INSTALL CYLINDRICAL ROLLER BEARING RACE INNER [34301F/98-4]
a. Using a press, press in the cylindrical roller bearing race inner.
NOTICE: Press in the counter driven gear while rotating it.
9. INSTALL UNDERDRIVE INPUT SHAFT NUT [34301C/98-4]
a. Clamp the U/D planetary gear in soft jaw vise.
NOTICE: Be careful not to damage the differential drive pinion.
b. Using a socket wrench, install a new lock nut.
Torque: 280 Nm (2,855 kgf-cm, 207 inch lbs.)
HINT: Use a torque wrench with a fulcrum length of 750 mm (29.53 inch).
10. INSPECT UNDERDRIVE PLANETARY GEAR PRELOAD
a. Using SST and a torque wrench, measure the turning torque of U/D planetary gear assy while rotating the torque wrench at 60 rpm.
SST 09387-00050
Turning torque at 60 rpm.: 0.10 - 4.41 Nm (1.0 - 45 kgf-cm, 0.9 - 39 inch lbs.)
HINT: Use a torque wrench with a fulcrum length of 160 mm (6.30 inch).
b. Using a pin punch and a hammer, stake the lock nut.
NOTICE: Make sure that there are no cracks on the nut.