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Home >> Lexus >> 2007 >> SC 430 V8-4.3L (3UZ-FE) >> Repair and Diagnosis >> Transmission and Drivetrain >> Differential Assembly >> Service and Repair >> Overhaul >> Part 3

Part 3

REAR DIFFERENTIAL CARRIER ASSEMBLY(continued)

COMPONENTS (Part 1):




COMPONENTS (Part 2):




COMPONENTS (Part 3):





REASSEMBLY(continued)





15. REMOVE REAR DIFFERENTIAL SIDE GEAR SHAFT SHAFT SNAP RING (for Ring gear side position)
(a) Using SST and a hammer, create a clearance between the side bearing (outer) on the ring gear and snap ring.
SST 09608-32010, 09950-70010 (09951-07200)

HINT: The clearance cannot be seen, but tapping SST with a hammer 3 or 4 times should be enough.





(b) Using snap ring pliers, remove the snap ring on the ring gear side.

HINT: For reassembly purposes, measure the thickness of the side gear shaft shaft snap ring. Write down the result.





16. REMOVE REAR DIFFERENTIAL CASE BEARING (for Ring gear side position)
(a) Tighten the SST bolt and push out the outer race on the ring gear side.
SST 09571-50010

NOTICE: Do not drop the side bearing (outer race).

(b) Remove SST.





17. REMOVE REAR DIFFERENTIAL CASE BEARING (for Except ring gear side position)
(a) Raise the ring gear side of the differential case slightly to remove the drive pinion side outer race.

HINT: For reassembly, check the installation position of the outer race and of the side gear shaft shaft snap ring before removing the outer race. Write down the result.





18. REMOVE REAR DIFFERENTIAL CASE SUB-ASSEMBLY

NOTICE: Be careful not to damage the case bearing.





19. REMOVE REAR DRIVE PINION NUT
(a) Using SST to hold the flange, remove the nut.
SST 09229-55010, 09330-00021 (09330-00030), 09950-30012 (09955-03040)





20. REMOVE REAR DRIVE PINION COMPANION FLANGE SUB-ASSEMBLY
(a) Using SST, remove the companion flange.
SST 09950-30012 (09951-03010, 09953-03010, 09954-03010, 09956-03060, 09955-03040)
21. REMOVE REAR DIFFERENTIAL DRIVE PINION OIL SLINGER
(a) Using a magnet hand, remove the differential drive pinion oil slinger.





22. REMOVE DIFFERENTIAL DRIVE PINION
(a) Using a press, press out the drive pinion with the rear bearing from the differential carrier.

NOTICE: Be careful not to drop the drive pinion.





23. REMOVE REAR DRIVE PINION FRONT TAPERED ROLLER BEARING
(a) Remove the front bearing from the differential carrier.





24. INSTALL REAR DIFFERENTIAL DRIVE PINION BEARING SPACER
(a) Install the spacer to the drive pinion.





25. INSTALL DIFFERENTIAL DRIVE PINION
(a) Using SST and a press, press the drive pinion (rear bearing rear inner race) and rear drive pinion tapered roller bearing front inner race into the differential carrier.
SST 09316-60011 (09316-00011), 09608-04031
26. INSTALL REAR DIFFERENTIAL DRIVE PINION OIL SLINGER
(a) Install the rear differential drive pinion oil slinger to the differential drive pinion.





27. INSTALL REAR DIFFERENTIAL CARRIER OIL SEAL
(a) Apply a small amount of MP grease to a new oil seal lip.
(b) Using SST and a hammer, tap the oil seal into the rear differential carrier.
SST 09316-60011 (09316-00011), 09710-04101
Standard oil seal depth: 0 ± 0.5 mm (0 ± 0.020 in.)

NOTICE: Be sure that the oil seal is straight during insertion.





28. INSTALL REAR DRIVE PINION COMPANION FLANGE SUB-ASSEMBLY
(a) Using SST, install the companion flange to the differential carrier.
SST 09950-30012 (09951-03010, 09953-03010, 09954-03010, 09955-03040, 09956-03060, 09956-03060)
(b) Apply hypoid gear oil LSD to the threads of a new nut.





(c) Using SST, hold the flange and tighten the nut while observing the preload with SST and torque wrench.
SST 09229-55010 (09955-03040), 09330-00021 (09330-00030)
Torque: 98 to 490 N*m (1,000 to 5,000 kgf*cm, 72 to 361 ft.*lbf)

NOTICE:
^ Do not tighten excessively, otherwise the threads will be stripped. SST
^ Apply hypoid gear oil LSD to the threads of the nut and drive pinion.

HINT: Tighten the nut using approximately 98 N*m (1,000 kgf*cm, 72 ft.*lbf) of force. Then tighten it further while observing the preload.





29. INSTALL REAR DIFFERENTIAL CASE SUB-ASSEMBLY
(a) Install the differential case from the ring gear tooth side to install.

NOTICE: Do not damage the case bearing or ring gear.





30. INSTALL REAR DIFFERENTIAL CASE BEARING
(a) Using SST and a hammer, tap in the drive pinion side outer race.
SST 09608-32010, 09950-70010 (09951-07200)

HINT: Tap in the outer race until half of the side gear shaft shaft snap ring groove of the differential carrier can be seen.





(b) Install SST to the differential carrier.
SST 09571-50010
(c) Tighten the SST bolt until the SST disc lightly touches to the case bearing (outer race).





(d) Using SST and a hammer, tap in the ring gear side outer race.
SST 09608-32010, 09950-70010 (09951-07200)

HINT: Tap in the outer race until it touches the case bearing roller.





31. INSTALL REAR DIFFERENTIAL SIDE GEAR SHAFT SHAFT SNAP RING
(a) Using snap ring pliers, install the snap ring in the differential carrier on the ring gear side.

HINT: Use the side gear shaft shaft snap ring installed when the tooth contact adjustment was performed.





(b) Set a dial indicator on the differential carrier.
Shaped limit: 0.2 mm (0.008 in.)
(c) Tighten the SST bolt to alter the differential carrier's shape.
SST 09571-50010

NOTICE: Do not alter the shape excessively.





(d) Using snap ring pliers, install the side gear shaft snap ring on the drive pinion side.

HINT: Use the side gear shaft shaft snap ring installed when the tooth contact adjustment was performed.





(e) Remove the dial indicator, and tap the differential carrier on the drive pinion side using a plastic-faced hammer to stabilize the case bearing.





32. INSPECT DIFFERENTIAL DRIVE PINION PRELOAD

NOTICE: Rotate the flange clockwise and counterclockwise several times to stabilize the bearing before measuring the differential drive pinion preload.

(a) Using SST and a torque wrench, measure the preload.
SST 09229-55010

Standard preload (at starting):





If the preload is greater than the specified maximum value, replace the bearing spacer.

NOTICE:
Because the bearing spacer deforms with use, replace the bearing spacer with a new one if the drive pinion preload is greater than the maximum value.
If the preload is less than the specified minimum value, check the preload while retightening the nut by 5 to 10 degrees to adjust it into the specified value range.
Torque: 98 to 490 N*m (1,000 to 5,000 kgf*cm, 72 to 361 ft.*lbf)

HINT: Tighten the nut using approximately 98 N*m (1,000 kgf*cm, 72 ft.*lbf) of force. Then tighten it further while observing the preload.

NOTICE: In some cases, the nut torque is greater than the specified value but the preload is still less than the specified minimum value. If not, proceed to step INSPECT RUNOUT OF DIFFERENTIAL DRIVE PINION.

(b) Loosen the nut and check that the threads of the nut and drive pinion are not damaged. If the threads are not stripped, replace the spacer and apply hypoid gear oil LSD to the threads. Then repeat step INSPECT DRIVE PINION PRELOAD.





33. INSPECT RUNOUT OF DIFFERENTIAL DRIVE PINION
(a) Place a dial indicator where 10 mm (0.39 in.) away from the drive pinion shaft tip at a right angle.
(b) Measure the shaft runout.
Maximum runout: 0.08 mm (0.0031 in.)





34. INSTALL REAR DIFFERENTIAL SIDE GEAR SHAFT OIL SEAL
(a) Apply MP grease to the lips of 2 new oil seal.
(b) Using SST and a hammer, tap in the oil seal until their faces become flush with the differential carrier surface.
SST 09223-15030, 09950-70010 (09951-07200)





35. INSPECT TOTAL PRELOAD
(a) Using SST and a torque wrench, measure the preload (at starting) with the drive pinion and ring gear teeth in contact. SST
SST 09229-55010
Standard total preload (at starting): Drive pinion preload plus 0.46 to 1.37 N*m (4.69 to 13.97 kgf*cm, 4.07 to 12.13 in.*lbf)





36. INSTALL REAR DRIVE PINION NUT
(a) Using a chisel and hammer, stake the nut.





37. INSTALL REAR DIFFERENTIAL CARRIER ASSEMBLY
(a) Remove the differential carrier from the overhaul attachment.

NOTICE: Clean the fitting surface between the differential carrier and carrier cover.





38. INSTALL REAR DIFFERENTIAL CARRIER COVER
(a) Clean the FIPG attached on the differential carrier and carrier cover using a scraper and wire brush. Then remove the oil with white gasoline or equivalent.

NOTICE: Be careful not to scratch the fitting surface.

(b) Install the rear differential breather plug oil deflector to the rear differential carrier cover with the bolt.
Torque: 7.0 N*m (70 kgf*cm, 62 in.*lbf)





(c) Apply a continuous bead of seal packing to the differential carrier (diameter: 2 to 3 mm (0.080 to 0.120 in.)) as shown in the illustration.
Seal packing: Toyota Genuine Seal Packing 1281, Three Bond 1281 or Equivalent

NOTICE:
^ Overlap the seal packing at least 10 mm at the beginning and the end of application.
^ Install the differential carrier cover within 3 minutes of application.





(d) Install the differential carrier cover with the 8 bolts.

NOTICE: After installing the cover, do not expose the seal to engine oil or start the engine for at least 1 hour, and avoid sudden acceleration or deceleration for at least 12 hours.

(e) If rear differential breather plug was removed:
(1) Install the breather plug.
Torque: 21 N*m (210 kgf*cm, 15 ft.*lbf)

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