PROCEDURE
INSTALL DIFFERENTIAL RING GEAR
Clean the contact surfaces of the rear differential case sub-assembly and differential ring gear.
Clean the ring gear set bolt hole.
| *a | 100°C (212°F) |
Heat the differential ring gear to approximately 100°C (212°F) in boiling water.
Carefully take the differential ring gear out of the boiling water.
CAUTION:
Use thick gloves to protect your hands as the differential ring gear is hot.
Secure the rear differential case sub-assembly between aluminum plates in a vise.
Note
Do not overtighten the vise.
| *a | Matchmark |
| *b | Thread Lock |
After the moisture on the differential ring gear has completely evaporated, quickly install the differential ring gear to the rear differential case sub-assembly.
Align the matchmarks on the differential ring gear and rear differential case sub-assembly.
After the differential ring gear has cooled sufficiently, install 10 new bolts to which thread lock has been applied.
| Adhesive |
|---|
| Toyota Genuine Adhesive 1360K, Three Bond 1360K or equivalent. |
Note
New ring gear set bolts should be used every time the differential ring gear is installed.
Do not allow oil to adhere to the ring gear set bolts during installation.
Temporarily install the 10 bolts.
After the differential ring gear cools down, tighten the 10 bolts.
Note
Tighten diametrically opposite ring gear set bolts in pairs.
| *a | Paint Mark |
| *b | 60° to 90° |
Tighten the 10 set bolts an additional 60° to 90°.
Note
Tighten diametrically opposite ring gear set bolts in pairs.
INSTALL REAR DIFFERENTIAL CASE BEARING
Using SST and a press, install the rear differential case bearing inner races LH and RH to the rear differential case sub-assembly.
| *a | for LH Side | *b | for RH Side |
Note
Do not apply hypoid gear oil to a new bearing.
Do not deform the bearing cage. Set SST to the center of the rear differential case sub-assembly.
If the bearing is replaced, replace it and its outer race as a set.
INSTALL REAR DRIVE PINION REAR TAPERED ROLLER BEARING
Using SST and a press, install the rear drive pinion rear tapered roller bearing inner race to the differential drive pinion.
Note
Do not apply hypoid gear oil to a new bearing.
Tech Tips
Disassemble SST (09613-22011) and use only the pipe section.
| *1 | Rear Drive Pinion Rear Tapered Roller Bearing Outer Race |
| *2 | Rear Differential Drive Pinion Plate Washer |
Using SST and a press, install a new rear differential drive pinion plate washer and rear drive pinion rear tapered roller bearing outer race.
Note
Do not apply hypoid gear oil to a new bearing.
Tech Tips
Select a rear differential drive pinion plate washer of the same thickness as the removed one.
INSTALL REAR DRIVE PINION FRONT TAPERED ROLLER BEARING
| *1 | Rear Drive Pinion Front Tapered Roller Bearing Outer Race |
Using SST and a press, install the rear drive pinion front tapered roller bearing outer race.
Note
Do not apply hypoid gear oil to a new bearing.
Install the rear drive pinion front tapered roller bearing inner race to the rear differential carrier.
Note
Do not apply hypoid gear oil to a new bearing.
INSTALL REAR DIFFERENTIAL DUST DEFLECTOR
Tech Tips
Perform this procedure only when replacing the rear differential dust deflector.
Using SST and a press, insert a new rear differential dust deflector to the rear drive pinion companion flange.
Note
Slowly press in the rear differential dust deflector. Do not press it excessively.
If any burrs remain after pressing in the rear differential dust deflector, remove them.
INSTALL DIFFERENTIAL DRIVE PINION
Using SST and a press, install the differential drive pinion.
Tech Tips
Install the rear differential drive pinion bearing spacer and rear differential carrier oil seal after adjusting the tooth contact pattern.
INSTALL REAR DIFFERENTIAL DRIVE PINION OIL SLINGER
Install the rear differential drive pinion oil slinger.
INSTALL REAR DRIVE PINION COMPANION FLANGE
| *a | Turn |
| *b | Hold |
Using SST, install the rear drive pinion companion flange.
Note
Install the rear drive pinion companion flange so that there is a slight looseness in the differential drive pinion because the rear differential drive pinion bearing spacer is not yet installed.
Apply molybdenum grease to the threads of SST center bolt (09953-03010) before use.
Tech Tips
When securing SST and the companion flange, it is recommended to use M8 X P 1.25 bolts with a length of approximately 40 mm.
Coat the threads of the rear drive pinion nut with hypoid gear oil LSD.
| *a | Turn |
| *b | Hold |
Using SST and a torque wrench, hold the rear drive pinion companion flange and temporary tighten the rear drive pinion nut.
CAUTION:
Hold the overhaul attachment during the operation.
Note
Apply hypoid gear oil LSD to the rear drive pinion nut and the threads of the differential drive pinion.
Tech Tips
Tighten the nut approximately 100 N*m (1020 kgf*cm, 74 ft.*lbf), and tighten it further while checking the preload.
ADJUST DIFFERENTIAL DRIVE PINION PRELOAD
Turn the bearing clockwise and counterclockwise several times to stabilize it.
Using SST and a torque wrench, measure the preload.
| Differential drive pinion preload (at starting) |
|---|
| 1.15 to 1.55 N*m (11.7 to 15.8 kgf*cm, 10.2 to 13.7 in.*lbf) |
If the preload is less than the specified minimum value, check the preload while retightening the drive pinion nut by 5 to 10° to adjust it into the specified range.
| Torque |
|---|
| 490 N*m (4997 kgf*cm, 361 ft.*lbf) or less |
Note
As there is no rear differential drive pinion bearing spacer, tighten the rear drive pinion nut a little at a time. Do not overtighten it.
INSTALL REAR DIFFERENTIAL CASE SUB-ASSEMBLY
Insert the rear differential case sub-assembly from the differential ring gear tooth side to install the rear differential case sub-assembly as shown in the illustration.
Note
Do not damage the rear differential case bearing or differential ring gear.
INSTALL REAR DIFFERENTIAL CASE BEARING
| *a | Groove |
Using SST and a hammer, install the differential side bearing outer race RH to the differential ring gear tooth side.
Note
Do not apply hypoid gear oil to a new bearing.
Tech Tips
Tap in the rear differential case bearing outer race RH until half of the rear differential side gear shaft snap ring groove of the rear differential carrier can be seen.
| *1 | Disc |
Install SST to the rear differential carrier with the 2 bolts (A).
Tighten SST bolt (B) until SST disc lightly touches the rear differential case bearing outer race RH.
Using SST and a hammer, install the rear differential case bearing outer race LH to the differential ring gear back surface side.
Note
Do not apply hypoid gear oil to a new bearing.
Tech Tips
Tap in the rear differential case bearing outer race LH until it touches the rear differential case bearing inner race roller.
INSTALL REAR DIFFERENTIAL SIDE GEAR SHAFT SNAP RING
Using SST, install the thinnest rear differential side gear shaft snap ring to the back surface of the differential ring gear.
Tech Tips
If the final gear set (differential drive pinion and differential ring gear) and rear differential case bearing are new, select a thinner rear differential side gear shaft snap ring and install it.
If the final gear set (differential drive pinion and differential ring gear) and rear differential case bearing are reused, install a rear differential side gear shaft snap ring with the same thickness as the removed one.
Install a dial indicator to the rear differential carrier.
Tech Tips
Set the dial indicator as shown in the illustration.
Tighten SST bolt to alter the shape of the rear differential carrier by approximately 0.1 mm (0.00394 in.).
Note
Observe the dial indicator to ensure that the shape of the rear differential carrier does not change by more than 0.2 mm (0.00787 in.).
Tech Tips
Tighten SST bolt to apply the preload to the rear differential case bearing.
Turn the differential ring gear clockwise and counterclockwise several times.
Using a dial indicator, measure the backlash of the differential ring gear at 3 positions.
| Backlash |
|---|
| 0.08 to 0.13 mm (0.00315 to 0.00511 in.) |
Note
The difference between the maximum and minimum values must be within 0.05 mm (0.00197 in.).
Tech Tips
Record the measured backlash to use as a reference for selecting a rear differential side gear shaft snap ring.
If the backlash is not within the specified range, replace the rear differential side gear shaft snap ring on the differential ring gear tooth side with a rear differential side gear shaft snap ring of a different thickness as described in the following procedure.
Inspect the tooth contact and use the result as a reference for selecting a rear differential side gear shaft snap ring.
Loosen SST bolt and separate SST disc from the rear differential case bearing outer race RH.
Note
Do not remove SST.
Using SST and a hammer, create a clearance between the rear differential side gear shaft snap ring on the differential ring gear back surface side and the rear differential case bearing outer race LH.
Using SST, remove the rear differential side gear shaft snap ring from the differential ring gear back surface side.
Using SST, install a rear differential side gear shaft snap ring with a different thickness.
Tech Tips
When the rear differential side gear shaft snap ring thickness changes by 0.02 mm (0.000787 in.), the backlash also changes by 0.02 mm (0.000787 in.).
| Rear Differential Side Gear Shaft Snap Ring thickness | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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|
Using a plastic-faced hammer, lightly tap the differential ring gear tooth side of the rear differential carrier.
| *a | Turn |
Install a dial indicator to the rear differential carrier.
Tech Tips
Set the dial indicator as shown in the illustration.
Tighten SST bolt to alter the shape of the rear differential carrier by approximately 0.1 mm (0.00394 in.).
Note
Observe the dial indicator to ensure that the shape of the rear differential carrier does not change by more than 0.2 mm (0.00787 in.).
Using a dial indicator, measure the backlash of the differential ring gear at 3 positions.
| Backlash |
|---|
| 0.08 to 0.13 mm (0.00315 to 0.00511 in.) |
If the backlash is not within the specified range, replace the rear differential side gear shaft snap ring on the back surface of the differential ring gear with one of a different thickness.
Tech Tips
Record the measured backlash to use as a reference for selecting a rear differential side gear shaft snap ring.
Inspect the tooth contact and use the result as a reference for selecting a rear differential side gear shaft snap ring.
ADJUST REAR DIFFERENTIAL CASE BEARING PRELOAD
| *a | Turn |
Install a dial indicator to the rear differential carrier.
Tech Tips
Set the dial indicator as shown in the illustration.
Tighten SST bolt to alter the shape of the rear differential carrier by approximately 0.1 mm (0.00394 in.).
Note
Observe the dial indicator to ensure that the shape of the rear differential carrier does not change by more than 0.2 mm (0.00787 in.).
Using SST, install the thinnest rear differential side gear shaft snap ring to the differential ring gear tooth side.
Remove the dial indicator and loosen the bolt until SST disc is separated from the rear differential case bearing outer race RH on the differential ring gear tooth side.
Using a plastic-faced hammer, lightly tap the differential ring gear tooth side of the rear differential carrier to stabilize the rear differential case bearing.
Using a dial indicator, measure the backlash of the differential ring gear at 3 positions. If even one backlash reading is smaller than the specified value, adjust the differential ring gear backlash by replacing the rear differential side gear shaft snap ring on the differential ring gear tooth side with a thicker one.
| Backlash |
|---|
| 0.08 to 0.13 mm (0.00315 to 0.00511 in.) |
Tech Tips
If the value is not within the specified range, replace the snap ring with one of a different thickness in the following procedure.
Remove the 2 bolts and SST.
ADJUST TOTAL PRELOAD
Using SST and a torque wrench, measure the preload with the teeth of the differential drive pinion and differential ring gear in contact.
| Total preload (at starting) | ||||||
|---|---|---|---|---|---|---|
|
Note
If the measured preload is less than the specified value, replace the rear differential side gear shaft snap ring of the differential ring gear tooth surface side with a thicker one.
If the measured preload is more than the specified value, replace the rear differential side gear shaft snap ring of the differential ring gear tooth surface side with a thinner one.
Tech Tips
When the rear differential side gear shaft snap ring thickness changes by 0.02 mm (0.000787 in.), the total preload will change by approximately 0.1 N*m (1 kgf*cm, 1 in.*lbf).
Set a dial indicator to the end of the differential ring gear face.
While holding the rear drive pinion companion flange, rotate the differential ring gear and measure the backlash.
| Backlash |
|---|
| 0.08 to 0.13 mm (0.00315 to 0.00511 in.) |
Note
If the measured value is out of the specified range, adjust it by increasing or decreasing the thickness of both the right and left rear differential side gear shaft snap rings equally.
When the rear differential side gear shaft snap ring thickness changes by 0.02 mm (0.000787 in.), the backlash will also change by approximately 0.02 mm (0.000787 in.).
Recheck the total preload.
INSPECT TOOTH CONTACT BETWEEN RING GEAR AND DRIVE PINION
Coat 3 or 4 teeth at 3 different positions on the differential ring gear with Prussian blue.
Rotate the differential ring gear in both directions.
Inspect the tooth contact pattern.
| *a | Proper Contact | *b | Heel Contact |
| *c | Face Contact | *d | Select an adjusting washer that will shift the drive pinion closer to the ring gear (*b, *c) |
| *e | Toe Contact | *f | Flank Contact |
| *g | Select an adjusting washer that will shift the drive pinion away from the ring gear (*e, *f) | - | - |
Note
Check the tooth contact pattern at 4 or more positions around circumference of the differential ring gear.
| *1 | Rear Differential Drive Pinion Plate Washer |
If the teeth are not contacting properly, use the following table to select a proper rear differential drive pinion plate washer for correction.
Tech Tips
If the contact pattern is face contact or flank contact, tooth contact may be adjustable while keeping the backlash within the specified range.
If the thickness of the rear differential drive pinion plate washer has been changed, adjust the backlash and measure the total preload.
| Rear Differential Drive Pinion Plate Washer thickness | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
REMOVE REAR DIFFERENTIAL SIDE GEAR SHAFT SHAFT SNAP RING (for RH Side)
REMOVE REAR DIFFERENTIAL SIDE GEAR SHAFT SHAFT SNAP RING (for LH Side)
REMOVE REAR DIFFERENTIAL CASE BEARING (for LH Side)
REMOVE REAR DIFFERENTIAL CASE BEARING (for RH Side)
REMOVE REAR DIFFERENTIAL CASE SUB-ASSEMBLY
REMOVE REAR DRIVE PINION NUT
| *a | Turn |
| *b | Hold |
Using SST to hold the rear drive pinion companion flange, remove the rear drive pinion nut.
CAUTION:
Hold the overhaul attachment during the operation.
Tech Tips
When securing SST and the companion flange, it is recommended to use M8 X P 1.25 bolts with a length of approximately 45 mm.
REMOVE REAR DRIVE PINION COMPANION FLANGE
REMOVE REAR DIFFERENTIAL DRIVE PINION OIL SLINGER
REMOVE DIFFERENTIAL DRIVE PINION
REMOVE REAR DRIVE PINION FRONT TAPERED ROLLER BEARING
Remove the rear drive pinion front tapered roller bearing inner race from the rear differential carrier.
INSTALL REAR DIFFERENTIAL DRIVE PINION BEARING SPACER
Install a new rear differential drive pinion bearing spacer to the differential drive pinion.
Note
Install the rear differential drive pinion bearing spacer with the larger diameter side facing toward the differential drive pinion.
INSTALL REAR DRIVE PINION FRONT TAPERED ROLLER BEARING
Install the rear drive pinion front tapered roller bearing inner race to the rear differential carrier.
INSTALL DIFFERENTIAL DRIVE PINION
Using SST and a press, install the differential drive pinion to the rear differential carrier.
INSTALL REAR DIFFERENTIAL DRIVE PINION OIL SLINGER
Install the rear differential drive pinion oil slinger.
INSTALL REAR DIFFERENTIAL CARRIER OIL SEAL
INSTALL REAR DRIVE PINION COMPANION FLANGE
| *a | Turn |
| *b | Hold |
Using SST, install the rear drive pinion companion flange to the differential drive pinion.
Note
Apply molybdenum grease to the threads of SST center bolt (09953-03010) before use.
Tech Tips
When securing SST and the companion flange, it is recommended to use M8 X P 1.25 bolts with a length of approximately 45 mm.
Coat the threads of a new rear drive pinion nut with hypoid gear oil LSD.
| *a | Turn |
| *b | Hold |
Using SST and a torque wrench, hold the rear drive pinion companion flange and temporary tighten the rear drive pinion nut.
CAUTION:
Hold the overhaul attachment during the operation.
Note
Do not tighten the nut excessively, otherwise the threads will be stripped.
Apply hypoid gear oil LSD to the threads of the drive pinion nut and differential drive pinion.
Tech Tips
Tighten the drive pinion nut to approximately 100 N*m (1020 kgf*cm, 74 ft.*lbf), and then tighten it further while observing the preload.
INSTALL REAR DIFFERENTIAL CASE SUB-ASSEMBLY
Insert the rear differential case sub-assembly from the differential ring gear tooth side to install the rear differential case sub-assembly as shown in the illustration.
Note
Do not damage the rear differential case bearing and differential ring gear.
INSTALL REAR DIFFERENTIAL CASE BEARING
| *a | Groove |
Using SST and a hammer, install the rear differential case bearing outer race RH to the differential ring gear tooth side.
Tech Tips
Tap in the rear differential case bearing outer race until half of the rear differential side gear shaft snap ring groove of the rear differential carrier can be seen.
| *1 | Disc |
Install SST to the rear differential carrier with the 2 bolts (A).
Tighten SST bolt (B) until SST disc lightly touches the rear differential case bearing outer race RH.
Using SST and a hammer, install the rear differential case bearing outer race LH to the differential ring gear back surface side.
Tech Tips
Tap in the rear differential case bearing outer race until it touches the rear differential case bearing inner race roller.
INSTALL REAR DIFFERENTIAL SIDE GEAR SHAFT SNAP RING
Using SST, install the rear differential side gear shaft snap ring to the rear differential carrier on the differential ring gear back surface side.
Tech Tips
Use the rear differential side gear shaft snap ring installed when performing tooth contact adjustment.
| *a | Turn |
Set a dial indicator on the rear differential carrier.
Tighten SST bolt to alter the shape of the rear differential carrier by approximately 0.1 mm (0.00394 in.).
Note
Observe the dial indicator to ensure that the shape of the rear differential carrier does not change by more than 0.2 mm (0.00787 in.).
Using SST, install the rear differential side gear shaft snap ring to the differential ring gear tooth side.
Tech Tips
Use the rear differential side gear shaft snap ring installed when performing tooth contact adjustment.
Remove the dial indicator and tap the rear differential carrier on the differential ring gear tooth side using a plastic-faced hammer to stabilize the rear differential case bearing.
Remove the 2 bolts and SST.
ADJUST DIFFERENTIAL DRIVE PINION PRELOAD
Using SST and a torque wrench, measure the starting torque of the differential drive pinion.
| Differential drive pinion preload (at starting) |
|---|
| 1.25 to 1.65 N*m (12.7 to 16.8 kgf*cm, 11.1 to 14.6 ft.*lbf) |
If the preload is less than the specified minimum value, check the preload while retightening the rear drive pinion nut 5 to 10°.
| Torque |
|---|
| 490 N*m (4997 kgf*cm, 361 ft.*lbf) or less |
If the preload is less than the specified minimum value even when the tightening torque of the rear drive pinion nut is more than the specified maximum value, loosen the rear drive pinion nut and check that the threads of the drive pinion nut and differential drive pinion are not stripped.
If the threads are not stripped, replace the rear differential drive pinion bearing spacer. Apply hypoid gear oil LSD to the threads of the differential drive pinion and repeat the procedure.
Tech Tips
The backlash between the differential drive pinion and differential ring gear should allow enough movement of the differential drive pinion to allow this measurement to be performed.
Make sure not to include the preload of the differential ring gear (rear differential case sub-assembly) in the measurement of the differential drive pinion preload.
INSPECT TOTAL PRELOAD
Using SST and a torque wrench, measure the preload with the teeth of the differential drive pinion and differential ring gear in contact.
| Total preload (at starting) | ||||||
|---|---|---|---|---|---|---|
|
INSPECT DIFFERENTIAL RING GEAR BACKLASH
While holding the rear drive pinion companion flange, rotate the differential ring gear and measure the backlash.
| Standard Backlash |
|---|
| 0.08 to 0.13 mm (0.00315 to 0.00511 in.) |
If the backlash is not within the specified range, adjust the backlash or perform repairs as necessary.
INSPECT RUNOUT OF DIFFERENTIAL DRIVE PINION
| *a | 10 mm (0.394 in.) |
Using a dial indicator, measure the runout of the differential drive pinion shaft at a position 10 mm (0.394 in.) away from the end of the shaft.
| Maximum runout |
|---|
| 0.08 mm (0.00315 in.) |
If the runout is more than the maximum, replace the differential drive pinion and differential ring gear.
STAKE REAR DRIVE PINION NUT
Using SST and a hammer, stake the rear drive pinion nut.
INSTALL REAR DIFFERENTIAL SIDE GEAR SHAFT OIL SEAL
| *1 | Rear Differential Side Gear Shaft Oil Seal |
| *a | Oil Seal Installation Depth |
Using SST and a hammer, install 2 new rear differential side gear shaft oil seals.
| Oil seal installation depth |
|---|
| -0.5 to 0.5 mm (-0.0197 to 0.0196 in.) |
Note
Make sure to check the identification marks on the rear differential side gear shaft oil seals before installation because the part numbers differ between the left and right sides.
To ensure a proper seal, evenly tap in the rear differential side gear shaft oil seals.
When installing the rear differential side gear shaft oil seals, tap them in until the outer surface of each seal is flush with the rear differential carrier.
Make sure the difference between the maximum and minimum measured values is less than 0.85 mm (0.0335 in.), as a greater difference may lead to oil leaks.
INSTALL REAR DIFFERENTIAL DRAIN PLUG
Using a hexagon wrench, install the differential drain plug together with a new gasket.
REMOVE REAR DIFFERENTIAL CARRIER
Remove the 4 bolts and rear differential carrier from the overhaul stand.
Note
Clean the fitting surface between the rear differential carrier and rear differential carrier cover.
INSTALL REAR DIFFERENTIAL BREATHER PLUG OIL DEFLECTOR
Clean the seal packing attached to the rear differential carrier and rear differential carrier cover using a scraper and wire brush. Then remove the oil with non-residue solvent or equivalent.
Note
Do not scratch the sealing surface.
Install the rear differential breather plug oil deflector to the rear differential carrier cover with the bolt.
INSTALL REAR DIFFERENTIAL CARRIER STRAIGHT PIN
Tech Tips
It is not necessary to remove a rear differential carrier straight pin unless it is being replaced.
| *a | Protrusion |
Using a plastic-faced hammer, install the 2 rear differential carrier straight pins to the rear differential carrier cover.
| Protrusion |
|---|
| 10 to 12 mm (0.394 to 0.472 in.) |
INSTALL REAR DIFFERENTIAL CARRIER COVER
| *1 | Seal Packing |
| *a | 2 to 3 mm (0.0788 to 0.118 in.) |
Apply seal packing 1281 to the rear differential carrier as shown in the illustration.
| Seal packing |
|---|
| Toyota Genuine Seal Packing 1281, Three bond 1281 or equivalent |
Note
Apply the seal packing in a continuous line, approximately 2 to 3 mm (0.0787 to 0.118 in.) in diameter.
Overlap the seal packing at least 10 mm (0.394 in.) at the beginning and end of application.
Install the rear differential carrier cover within 3 minutes of application.
Install the rear differential carrier cover with the 8 bolts.
Note
Do not fill the differential with oil or drive the vehicle immediately after installing the differential carrier cover. Leave the vehicle for at least 1 hour. Also, avoid sudden acceleration and deceleration for at least 12 hours after application.
INSTALL REAR DIFFERENTIAL BREATHER PLUG
Install the rear differential breather plug to the rear differential carrier cover.