INSPECT DIFFERENTIAL SIDE GEAR BACKLASH
Install the 2 thrust washers to the 2 side gears.
Install the 4 thrust washers to the 4 pinion gears.
Install the 2 side gears into the differential case.
Install the holder into the differential case.
Install the 4 pinion gears.
Align the holes of the differential case and pinion shaft, and install the 3 pinion shafts.
Align the matchmarks and install the differential cover to the differential case.
Temporarily install the 5 bolts and 3 pinion shaft pins.
Using a T10 "TORX" socket, tighten the 5 bolts and 3 pinion shaft pins.
Using a dial indicator, while holding the side gear, measure the backlash.
| Standard backlash |
|---|
| 0.02 to 0.15 (0.000787 to 0.00591 in.) |
If the backlash is not within the specification, replace the side gear thrust washers with washers of a different thickness.
Tech Tips
Make sure the washers on both sides are the same size.
Measure at all 4 pinion gear locations.
Apply hypoid gear oil to each sliding surface and rotating part.
| Standard Thrust Washer Thickness | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
After measuring the backlash, remove the 5 set bolts and 3 pinion shaft pins.
ASSEMBLE DIFFERENTIAL CASE
Clean the threads of the bolts, pinion shaft pins, case and cover with non-residue solvent.
Coat the threads of the bolts and pinion shafts with adhesive.
| Adhesive |
|---|
| Toyota Genuine Adhesive 1324, Three Bond 1324 or equivalent |
Align the matchmarks of the case and cover.
Using a T10 "TORX" socket, install the 5 bolts and 3 pinion shaft pins.
INSTALL REAR DIFFERENTIAL CASE BEARING
Differential Cover Side:
Using SST and a press, press the side bearing onto the differential cover.
Ring Gear Side:
Using SST and a press, press the side bearing onto the differential case.
INSTALL DIFFERENTIAL RING GEAR
Clean the threads of the bolts and differential case with non-residue solvent.
Clean the contact surface of the differential case and ring gear.
Heat the ring gear to about 100°C (212°F) in boiling water.
Carefully take the ring gear out of the boiling water.
After the moisture on the ring gear has completely evaporated, quickly align the matchmarks on the ring gear and differential case and set the ring gear onto the differential case. Then temporarily install the 12 bolts so that the bolt holes in the ring gear and differential case are aligned.
After the ring gear cools down sufficiently, remove the 12 bolts. Then apply thread lock adhesive to the 12 bolts and install them.
| Thread lock |
|---|
| Toyota Genuine Adhesive 1360K, Three Bond 1360K or equivalent |
INSPECT RUNOUT OF DIFFERENTIAL RING GEAR
Place the bearing outer races on their respective bearings.
Tech Tips
Do not interchange the left and right outer races.
Install the assembled plate washers to the side bearing.
Install the differential case to the differential carrier.
Tech Tips
If it is difficult to install the differential case to the carrier, replace the plate washer with a thinner one.
However, select a plate washer that allows no clearance between it and the carrier.
Align the matchmarks on the bearing caps and differential carrier.
Install and uniformly tighten the 4 bolts a little at a time.
Using a dial indicator, check the ring gear runout.
| Maximum runout |
|---|
| 0.05 mm (0.00197 in.) |
If the runout is more than the maximum, replace the ring gear.
Remove the differential case.
INSTALL REAR DRIVE PINION FRONT TAPERED ROLLER BEARING
Using SST and a press, press in the front bearing outer race.
INSTALL REAR DRIVE PINION REAR TAPERED ROLLER BEARING
Using SST and a press, press in the rear bearing outer race.
INSTALL REAR DRIVE PINION REAR TAPERED ROLLER BEARING
Install the washer to the drive pinion.
Tech Tips
After installing the washer, check the tooth contact pattern. If necessary, replace the washer with one of a different thickness.
Using SST and a press, press the rear bearing into the drive pinion.
INSPECT DRIVE PINION PRELOAD
Install the drive pinion and front bearing.
Tech Tips
Assemble the spacer and oil seal after adjusting the gear contact pattern.
Install the oil slinger.
Using SST, install the companion flange.
Using SST to hold the flange, adjust the drive pinion preload by tightening the nut.
Note
Coat the nut and threads of the drive pinion with gear oil.
As there is no spacer, tighten the nut a little at a time, being careful not to overtighten it.
Using a torque wrench, measure the preload.
| Standard Preload (at Starting) | ||||||
|---|---|---|---|---|---|---|
|
Note
Measure the total preload after turning the bearing clockwise and counterclockwise several times to make the bearing smooth.
INSTALL REAR DIFFERENTIAL CASE SUB-ASSEMBLY
Place the bearing outer races on their respective bearings.
Tech Tips
Do not interchange the left and right outer races.
Install the assembled plate washer to the side bearing.
Install the differential case to the carrier.
Using a plastic-faced hammer, tap on the ring gear to make sure the differential case is aligned with the carrier, and fit the bearings and plate washers into the carrier.
Tech Tips
If it is difficult to install the differential case to the carrier, replace the plate washer with a thinner one.
However, select a plate washer that allows no clearance between it and the carrier.
INSPECT DIFFERENTIAL RING GEAR BACKLASH
Using a dial indicator, measure the backlash while holding the side bearing of the ring gear side.
| Standard backlash |
|---|
| 0.10 to 0.20 mm (0.00394 to 0.00787 in.) |
Select a case cover side plate washer using the backlash as a reference.
| Standard Side Plate Washer Thickness | ||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Select a ring gear teeth side plate washer so that there is no clearance between the outer race and case.
Remove the 2 plate washers and differential carrier.
Install the selected plate washer into the lower part of the carrier.
Place the selected plate washer onto the differential case together with the outer races, and install the differential case with the outer races to the carrier.
Using a plastic-faced hammer, tap on the ring gear to make sure the differential case is aligned with the carrier, and fit the bearings and plate washers into the carrier.
Using a dial indicator, measure the ring gear backlash.
| Standard backlash |
|---|
| 0.10 to 0.20 mm (0.00394 to 0.00787 in.) |
If the backlash is not within the specification, adjust it by either increasing or decreasing the thickness of washers on both sides by an equal amount.
Tech Tips
There should be no clearance between the plate washers and case.
Ensure that there is ring gear backlash.
ADJUST SIDE BEARING PRELOAD
Remove the ring gear side plate washer.
Using a micrometer, measure the thickness.
Using the backlash as a reference, select a washer that is 0.06 to 0.09 mm (0.00236 to 0.00354 in.) thicker than the removed washer.
Tech Tips
Select a washer which can be pressed in 2/3 of the full amount with your finger.
Install the selected plate washer.
Using SST and plastic-faced hammer, tap the plate washer so that it fits to the bearing.
Align the matchmarks on the caps and carrier.
Install the 4 bearing cap bolts to the specified torque.
Using a dial indicator, adjust the ring gear backlash until it is within the specification.
| Standard backlash |
|---|
| 0.10 to 0.20 mm (0.00394 to 0.00787 in.) |
INSPECT TOTAL PRELOAD
Using a torque wrench, measure the preload with the teeth of the drive pinion and ring gear in contact.
| Standard total preload (at starting) |
|---|
| Standard drive pinion preload plus 0.29 to 0.49 N*m (3 to 5 kgf*cm, 3 to 4 in.*lbf) |
INSPECT TOOTH CONTACT BETWEEN RING GEAR AND DRIVE PINION
Coat 3 or 4 teeth at 3 different positions on the ring gear with Prussian blue.
Turn the companion flange in both directions to inspect the ring gear for proper tooth contact.
If the teeth are not contacting properly, use the following table to select a proper washer for correction.
| Standard Washer Thickness | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
REMOVE DRIVE PINION COMPANION FLANGE REAR NUT
Using SST to hold the flange, remove the nut.
REMOVE REAR DRIVE PINION REAR COMPANION FLANGE SUB-ASSEMBLY
Using SST, remove the companion flange.
REMOVE REAR DIFFERENTIAL DRIVE PINION OIL SLINGER
REMOVE REAR DRIVE PINION FRONT TAPERED ROLLER BEARING
Using SST, remove the bearing (inner race).
If the front bearing is damaged or worn, replace the bearing.
INSTALL REAR DIFFERENTIAL DRIVE PINION BEARING SPACER
Install a new spacer to the drive pinion.
INSTALL REAR DRIVE PINION FRONT TAPERED ROLLER BEARING
Using SST and a hammer, tap in the bearing (outer race).
Install the bearing (inner race).
INSTALL REAR DIFFERENTIAL DRIVE PINION OIL SLINGER
INSTALL REAR DIFFERENTIAL CARRIER OIL SEAL
Using SST and a hammer, tap in a new oil seal.
| Standard oil seal depth |
|---|
| 0.05 to 0.95 mm (0.00197 to 0.0374) |
Coat the lip of the oil seal with MP grease.
INSTALL REAR DRIVE PINION REAR COMPANION FLANGE SUB-ASSEMBLY
Using SST, install the companion flange.
INSPECT DRIVE PINION PRELOAD
Coat the threads of a new nut with hypoid gear oil.
Using SST to hold the companion flange, install the nut by tightening it until the standard preload is reached.
Using a torque wrench, measure the preload.
| Standard Preload (at Starting) | ||||||
|---|---|---|---|---|---|---|
|
INSPECT TOTAL PRELOAD
Using a torque wrench, measure the preload with the teeth of the drive pinion and ring gear in contact.
| Standard total preload (at starting) |
|---|
| Standard drive pinion preload plus 0.29 to 0.49 N*m (3 to 5 kgf*cm, 3 to 4 in.*lbf) |
INSPECT DIFFERENTIAL RING GEAR BACKLASH
Using a dial indicator, measure the ring gear backlash.
| Standard backlash |
|---|
| 0.10 to 0.20 mm (0.00394 to 0.00787 in.) |
Tech Tips
Measure at 3 or more positions around the circumference of the ring gear.
If the backlash is not as specified, adjust the side bearing preload or repair as necessary.
INSPECT RUNOUT OF REAR DRIVE PINION REAR COMPANION FLANGE SUB-ASSEMBLY
Using a dial indicator, measure the runout of the companion flange vertically and laterally.
| Maximum Runout | ||||||
|---|---|---|---|---|---|---|
|
If the runout is more than the maximum, replace the companion flange.
STAKE DRIVE PINION COMPANION FLANGE REAR NUT
Using a chisel and hammer, stake the nut.
INSTALL DIFFERENTIAL LOCK SHIFT ACTUATOR
Remove any old FIPG material.
Clean the contact surfaces of any residual FIPG material using non-residue solvent.
Apply seal packing to the actuator.
| Seal packing |
|---|
| Toyota Genuine Seal Packing 1281, Three Bond 1281 or equivalent |
Tech Tips
Install the actuator within 10 minutes after applying seal packing.
Install the shift fork and actuator to the differential and align the shift fork hole with the shift lock.
Clean the threads of the set bolt and fork shaft with non-residue solvent.
Coat the threads of the set bolt with adhesive.
| Adhesive |
|---|
| Toyota Genuine Adhesive 1324, Three Bond 1324 or equivalent |
Install the shift fork shaft set bolt.
Engage the sleeve with the dog clutch of the differential case.
Install the 4 bolts.
INSTALL REAR DIFFERENTIAL LOCK COVER
Remove any old FIPG material.
Clean the contact surfaces of any residual FIPG material using non-residue solvent.
Apply seal packing to the cover
| Seal packing |
|---|
| Toyota Genuine Seal Packing 1281, Three Bond 1281 or equivalent |
Tech Tips
Install the cover within 10 minutes after applying seal packing.
Install the cover with the 3 bolts.
INSTALL NO. 1 TRANSFER INDICATOR SWITCH
Using a SST, install a new gasket and the indicator switch.
Note
Rotate SST in the direction shown in the illustration.
Use a torque wrench with a fulcrum length of 300 mm (11.8 in.).
Connect the connector.