Ring Gear Mounting Case and Center Differential Case

RING GEAR MOUNTING CASE AND CENTER DIFFERENTIAL CASE

COMPONENTS





RING GEAR MOUNTING CASE AND CENTER DIFFERENTIAL CASE DISASSEMBLY
1. REMOVE OIL PUMP DRIVE GEAR





a. Using a screwdriver, remove the shaft snap ring.
b. Remove the oil pump drive gear.
2. REMOVE RING GEAR MOUNTING LEFT CASE





a. Place matchmarks on the differential left case and the differential right case.
b. Remove the 12 bolts.

NOTICE: Using the soft jaws, hold the left case in a vise.

c. Remove the differential left case upward.
3. REMOVE RING GEAR
a. Place matchmarks on the differential left case and ring gear.





b. Using a plastic hammer, tap out the ring gear.
c. Remove the O-ring from the left case.





4. REMOVE LEFT CASE BEARING
Using SST and a press, press out the bearing.
SST 09950-00020
5. REMOVE THRUST WASHER
6. REMOVE CENTER DIFFERENTIAL CASE ASSEMBLY
7. DISASSEMBLE CENTER DIFFERENTIAL CASE





a. Using a snap ring expander, remove the shaft snap ring.





b. Remove the spacer.





c. Remove these parts from the center differential case.
- 4 pinion shafts
- Pinion shaft holder
- 4 differential pinions
- 4 pinion thrust washers
- Differential side left gear
- Side gear thrust washer





8. REMOVE DIFFERENTIAL SIDE RIGHT GEAR AND CONICAL SPRING WASHER





9. REMOVE RIGHT CASE BEARING
Using SST and a press, press out the bearing.
SST 09950-00020

RING GEAR MOUNTING CASE AND CENTER DIFFERENTIAL CASE ASSEMBLY





1. INSTALL RIGHT CASE BEARING
Using SST and a press, press in the bearing.
SST 09316-12010, 09950-60020 (09951-00780), 09950-70010 (09951-07150)





2. INSTALL LEFT CASE BEARING
Using SST and a press, press in the left case.
SST 09316-12010, 09950-60020 (09951-00780), 09950-70010 (09951-07150)
3. INSTALL RING GEAR





a. Clean the contact surface of the ring gear mounting left case.
b. Heat the ring gear to about 100°C (212°F) in an oil bath.

NOTICE: Do not heat the ring gear above 110°C (230°F).

c. Carefully remove the ring gear from the oil bath.
d. Clean the contact surface of the ring gear with cleaning solvent.
e. Align the matchmarks and quickly install the ring gear on the ring gear mounting left case.
4. CHECK AND ADJUST CENTER DIFFERENTIAL SIDE GEAR BACKLASH





a. Install these parts to the center differential case.
- Side gear thrust washer
- Differential side left gear
- 4 pinion thrust washers
- 4 differential pinions
- Pinion shaft holder
- 4 pinion shafts





b. Install the spacer to the case.





c. Using a dial indicator, measure the backlash of one pinion gear while holding the side gear toward the case.

Standard backlash: 0.05 - 0.20 mm (0.002 - 0.0079 inch)

HINT: Do not place in a vise the surface of the center differential case which comes in contact with the bushing.

Referring to the table, select the thrust washer which will ensure that the backlash is within specification.
Try to select a washer of the same size.





Thrust washer thickness





d. Using a snap ring expander, install the shaft snap ring.
5. CHECK AND ADJUST CENTER DIFFERENTIAL SIDE GEAR THRUST CLEARANCE





a. Install the differential side right gear.

HINT: Do not install the conical spring washer.





b. Install the center differential case.





c. Install the thrust washer.





d. Align the matchmarks on the ring gear mounting left and right case.
e. Install and torque the 12 bolts.

Torque: 97 Nm (985 kgf-cm, 71 ft. lbs.)

NOTICE: Do not install the O-ring.





f. Using a caliper, measure the conical spring washer thickness.
g. Using a dial indicator, measure the thrust clearance of center differential case while holding the ring gear mounting case.





Standard clearance:





h. Referring to the table, select the thrust washer which will ensure that the backlash is within specification. Try to select a washer of the same size as the removed washer.





Thrust washer thickness

i. Remove the ring gear mounting right case.





6. INSTALL DIFFERENTIAL SIDE GEAR AND CONICAL SPRING WASHER

NOTICE: Be careful not to make a mistake in the direction of the conical spring washer.





7. INSTALL CENTER DIFFERENTIAL CASE





8. INSTALL THRUST WASHER (Previously selected)
9. INSTALL RING GEAR MOUNTING LEFT CASE
a. Coat a new O-ring with ATF, and install it onto the left case.
b. Align the matchmarks on the right and left case.





c. Install and torque the 12 bolts.

Torque: 97 Nm (986 kgf-cm, 71 ft. lbs.)

NOTICE: Using the soft jaws, hold the left case in a vise.





10. INSTALL OIL PUMP DRIVE GEAR
a. Install the oil pump drive gear.





b. Install the shaft snap ring.