Reduction Drive Gear

Reduction Drive Gear

REMOVAL

1) Remove the transmission assembly from the vehicle.
2) Remove the air breather hose.
3) Remove the control valve body.
4) Remove the transmission harness.
5) Remove the turbine speed sensor.
6) Remove the secondary speed sensor.
7) Remove the primary speed sensor.
8) Remove the inhibitor switch.
9) Remove the extension case.
10) Remove the transfer clutch assembly.
11) Remove the transfer driven gear assembly.
12) Remove the parking pawl.
13) Remove the reduction driven gear assembly.
14) Remove the oil pan and oil strainer.
15) Remove the transmission control device.
16) Remove the transmission case.
17) Remove the reduction drive gear.





INSTALLATION

1) Install the reduction drive gear to secondary pulley.





2) Select the reduction drive gear shim.
3) Remove the transmission case, and install the selected shim.
4) Install the transmission case.
5) Install the transmission control device.
6) Install the oil strainer and oil pan.
7) Install the reduction driven gear assembly.
8) Install the parking pawl.
9) Install the transfer driven gear assembly.
10) Install the transfer clutch assembly.
11) Install the extension case.
12) Install the inhibitor switch.
13) Install the secondary speed sensor.
14) Install the primary speed sensor.
15) Install the turbine speed sensor.
16) Install the transmission harness.
17) Install the control valve body.
18) Install the air breather hose.
19) Install the transmission assembly to the vehicle.

INSPECTION

Check the reduction drive gear for breakage or damage.

ADJUSTMENT

1) Install the transmission case, and secure it with four or five bolts.

Tightening torque:
22 Nm (2.2 kgf-m, 16.2 ft-lb)

2) Measure depth "A" from the ST upper face to the reduction drive gear end face.
ST 499575400 GAUGE





3) Raise and hold the reduction drive gear.





4) Measure depth "B" from the ST upper face to the reduction drive gear end face.
ST 499575400 GAUGE





5) Obtain the thickness of reduction drive gear shim using the following formula to select one to three reduction drive gear shims.
T (mm) = A - B - (0.05 - 0.25)
[T (in) = A - B - (0.002 - 0.01)]
T: Reduction drive gear shim thickness
A: Depth from the ST upper face to the reduction drive gear end surface
B: Depth from the ST upper face to the reduction drive gear end surface
0.05 - 0.25 mm (0.002 - 0.01 in): Clearance