Lexus IS250 IS220d GSE20 ALE20 - DIFFERENTIAL

REAR DIFFERENTIAL CARRIER (for 2AD-FHV) - DISASSEMBLY

1. REMOVE REAR DIFFERENTIAL CARRIER COVER BREATHER PLUG
Rear Differential Carrier (For 2Ad-Fhv) - Disassembly. DIFFERENTIAL. Lexus IS250 IS220d GSE20 ALE20

Remove the breather plug from the differential carrier cover.

2. REMOVE REAR DIFFERENTIAL CARRIER COVER
Rear Differential Carrier (For 2Ad-Fhv) - Disassembly. DIFFERENTIAL. Lexus IS250 IS220d GSE20 ALE20

Remove the 8 bolts from the differential carrier cover.

Rear Differential Carrier (For 2Ad-Fhv) - Disassembly. DIFFERENTIAL. Lexus IS250 IS220d GSE20 ALE20

Using a brass bar and a hammer, remove the differential carrier cover from the differential carrier.

  • NOTICE:
Place the brass bar onto the corners of the carrier cover.
Do not damage the sealing surface of the differential carrier.
3. REMOVE REAR DIFFERENTIAL BREATHER PLUG OIL DEFLECTOR
Rear Differential Carrier (For 2Ad-Fhv) - Disassembly. DIFFERENTIAL. Lexus IS250 IS220d GSE20 ALE20

Remove the bolt and oil deflector from the differential carrier cover.

4. SECURE REAR DIFFERENTIAL CARRIER
Rear Differential Carrier (For 2Ad-Fhv) - Disassembly. DIFFERENTIAL. Lexus IS250 IS220d GSE20 ALE20

Set the differential carrier to the overhaul stand, etc., as shown in the illustration.

5. INSPECT RUNOUT OF DIFFERENTIAL RING GEAR
Rear Differential Carrier (For 2Ad-Fhv) - Disassembly. DIFFERENTIAL. Lexus IS250 IS220d GSE20 ALE20

Set the dial indicator perpendicular to the end of the ring gear face.

Rotate the ring gear and measure the backlash.

  • Maximum runout:
  • 0.05 mm (0.0020 in.)

If the runout exceeds the specified maximum value, remove the ring gear and check the runout of the differential case.


6. INSPECT DIFFERENTIAL RING GEAR BACKLASH
Rear Differential Carrier (For 2Ad-Fhv) - Disassembly. DIFFERENTIAL. Lexus IS250 IS220d GSE20 ALE20

While holding the rear drive pinion companion flange, rotate the ring gear and measure the backlash.

  • Backlash:
  • 0.08 to 0.13 mm (0.0031 to 0.0051 in.)

If the backlash is not within the specified range, adjust the backlash or repair as necessary.


7. INSPECT TOOTH CONTACT BETWEEN RING GEAR AND DRIVE PINION
Rear Differential Carrier (For 2Ad-Fhv) - Disassembly. DIFFERENTIAL. Lexus IS250 IS220d GSE20 ALE20

Coat 3 or 4 teeth at the 3 different positions on the ring gear with Prussian blue.

Rotate the ring gear in both directions.

Inspect the tooth contact pattern.

Rear Differential Carrier (For 2Ad-Fhv) - Disassembly. DIFFERENTIAL. Lexus IS250 IS220d GSE20 ALE20

Rear Differential Carrier (For 2Ad-Fhv) - Disassembly. DIFFERENTIAL. Lexus IS250 IS220d GSE20 ALE20

If the teeth are not contacting properly, use the following table to select a proper plate washer for correction.

  • HINT:
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 drive pinion washer has been changed, adjust the backlash and measure the total preload.
Washer thickness
Thickness mm (in.)No.Thickness mm (in.)No.Thickness mm (in.)No.
1.87 (0.0736)872.01 (0.0791)012.15 (0.0846)15
1.88 (0.0740)882.02 (0.0795)022.16 (0.0850)16
1.89 (0.0744)892.03 (0.0799)032.17 (0.0854)17
1.90 (0.0748)902.04 (0.0803)042.18 (0.0858)18
1.91 (0.0752)912.05 (0.0807)052.19 (0.0862)19
1.92 (0.0756)922.06 (0.0811)062.20 (0.0866)20
1.93 (0.0760)932.07 (0.0815)072.21 (0.0870)21
1.94 (0.0764)942.08 (0.0819)082.22 (0.0874)22
1.95 (0.0768)952.09 (0.0823)092.23 (0.0878)23
1.96 (0.0772)962.10 (0.0827)102.24 (0.0882)24
1.97 (0.0776)972.11 (0.0831)112.25 (0.0886)25
1.98 (0.0780)982.12 (0.0835)122.26 (0.0890)26
1.99 (0.0783)992.13 (0.0839)132.27 (0.0894)27
2.00 (0.0787)002.14 (0.0843)142.28 (0.0898)28
8. INSPECT DIFFERENTIAL SIDE GEAR BACKLASH
Rear Differential Carrier (For 2Ad-Fhv) - Disassembly. DIFFERENTIAL. Lexus IS250 IS220d GSE20 ALE20

Place a dial indicator on the tip of the pinion gear tooth at a right angle. Hold the side gear in the differential case and check that the backlash is 0 mm (0 in.).


If not, replace the rear differential case sub-assembly with a new one.

9. INSPECT RUNOUT OF DIFFERENTIAL DRIVE PINION
Rear Differential Carrier (For 2Ad-Fhv) - Disassembly. DIFFERENTIAL. Lexus IS250 IS220d GSE20 ALE20

Using a dial indicator, measure the runout of the drive pinion shaft at a position 10 mm (0.39 in.) away from the end of the shaft.

  • Maximum runout:
  • 0.08 mm (0.0031 in.)

If the runout is greater than the maximum, replace the drive pinion and ring gear.


10. INSPECT DIFFERENTIAL DRIVE PINION PRELOAD
Rear Differential Carrier (For 2Ad-Fhv) - Disassembly. DIFFERENTIAL. Lexus IS250 IS220d GSE20 ALE20

Using SST and a torque wrench, measure the starting torque of the drive pinion. The backlash between the drive pinion and ring gear should allow enough movement of the drive pinion to allow this measurement to be performed. Make sure not to include the preload of the ring gear (differential case) in the measurement of the drive pinion preload.

  • SST
  • 09229-55010
  • Drive pinion preload (at starting):
  • SpecificationsPreload
    New bearing1.22 to 1.80 N*m (12.4 to 18.4 kgf*cm, 10.8 to 15.9 in.*lbf)
    Reused bearing0.50 to 0.80 N*m (5.1 to 8.2 kgf*cm, 4.3 to 6.9 in.*lbf)

If the preload is not within the specified range, adjust the rear differential drive pinion preload or repair as necessary.


11. INSPECT TOTAL PRELOAD
Rear Differential Carrier (For 2Ad-Fhv) - Disassembly. DIFFERENTIAL. Lexus IS250 IS220d GSE20 ALE20

Using SST and a torque wrench, measure the preload with the teeth of the drive pinion and ring gear in contact.

  • SST
  • 09229-55010
  • Total preload (at starting):
  • Grade: luxury
    SpecificationsPreload
    New bearing1.92 to 3.89 N*m (19.6 to 39.7 kgf*cm, 17.0 to 34.4 in.*lbf)
    Reused bearing1.20 to 2.89 N*m (12.2 to 29.5 kgf*cm, 10.6 to 25.6 in.*lbf)
  • Grade: sport
    SpecificationsPreload
    New bearing1.75 to 3.38 N*m (17.8 to 34.5 kgf*cm, 15.5 to 29.9 in.*lbf)
    Reused bearing1.03 to 2.38 N*m (10.5 to 24.3 kgf*cm, 9.1 to 21.1 in.*lbf)

If the preload is not within the specified range, adjust the total preload or repair as necessary.


12. REMOVE REAR DIFFERENTIAL SIDE GEAR SHAFT OIL SEAL
Rear Differential Carrier (For 2Ad-Fhv) - Disassembly. DIFFERENTIAL. Lexus IS250 IS220d GSE20 ALE20

Using SST, remove the 2 oil seals.

  • SST
  • 09308-00010
13. REMOVE REAR DIFFERENTIAL SIDE GEAR SHAFT SNAP RING
Rear Differential Carrier (For 2Ad-Fhv) - Disassembly. DIFFERENTIAL. Lexus IS250 IS220d GSE20 ALE20

Install SST to the differential carrier.

  • SST
  • 09571-50010

Tighten the SST bolt (A) until the SST disc slightly touches the case bearing outer race.

Rear Differential Carrier (For 2Ad-Fhv) - Disassembly. DIFFERENTIAL. Lexus IS250 IS220d GSE20 ALE20

Install a dial indicator to the rear differential carrier.

Tighten the SST bolt. Push in the differential case bearing (outer race) until an approximately 0.1 mm (0.004 in.) clearance is created between the bearing (outer race) and the differential side gear shaft snap ring.

  • NOTICE:
  • Observe the dial indicator and ensure that the bearing (outer race) is not pushed in more than 0.2 mm (0.008 in.).
  • HINT:
Install the dial indicator to the position as close to the differential carrier cover side (upper side in the illustration) of the bearing (outer race) as possible.
Approximately 0.1 mm (0.004 in.) clearance between the case bearing outer race and the side gear shaft snap ring is sufficient for the washer to move slightly.
Rear Differential Carrier (For 2Ad-Fhv) - Disassembly. DIFFERENTIAL. Lexus IS250 IS220d GSE20 ALE20

Using snap ring pliers, remove the side gear shaft snap ring on the ring gear tooth side.

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

Remove the dial indicator and loosen the SST bolt.

  • NOTICE:
  • Do not remove the SST.
14. REMOVE REAR DIFFERENTIAL SIDE GEAR SHAFT SNAP RING
Rear Differential Carrier (For 2Ad-Fhv) - Disassembly. DIFFERENTIAL. Lexus IS250 IS220d GSE20 ALE20

Using SST and a hammer, create a clearance between the case bearing outer race on the back surface of the ring gear and side gear shaft snap ring.

  • SST
  • 09608-32010
    09950-70010(09951-07200)
  • HINT:
  • The clearance is not visible, but tapping the SST with a hammer three or four times should create sufficient clearance.
Rear Differential Carrier (For 2Ad-Fhv) - Disassembly. DIFFERENTIAL. Lexus IS250 IS220d GSE20 ALE20

Using snap ring pliers, remove the side gear shaft snap ring on the back surface of the ring gear.

  • HINT:
  • For reassembly purposes, measure the thickness of the side gear shaft snap ring. Write down the result.
15. REMOVE REAR DIFFERENTIAL CASE BEARING
Rear Differential Carrier (For 2Ad-Fhv) - Disassembly. DIFFERENTIAL. Lexus IS250 IS220d GSE20 ALE20

Tighten the SST bolt and push out the case bearing outer race on the back surface of the ring gear.

  • SST
  • 09571-50010
  • NOTICE:
  • Do not drop the case bearing outer race.
Rear Differential Carrier (For 2Ad-Fhv) - Disassembly. DIFFERENTIAL. Lexus IS250 IS220d GSE20 ALE20

Remove the SST.

16. REMOVE REAR DIFFERENTIAL CASE BEARING
Rear Differential Carrier (For 2Ad-Fhv) - Disassembly. DIFFERENTIAL. Lexus IS250 IS220d GSE20 ALE20

Raise the ring gear of the differential case slightly to remove the ring gear tooth side case bearing outer race.

  • HINT:
  • For reassembly, check the installation position of the case bearing outer race and the side gear shaft snap ring before removing the case bearing outer race. Write down the result.
17. REMOVE REAR DIFFERENTIAL CASE SUB-ASSEMBLY
Rear Differential Carrier (For 2Ad-Fhv) - Disassembly. DIFFERENTIAL. Lexus IS250 IS220d GSE20 ALE20

Remove the rear differential case assembly.

  • NOTICE:
  • Do not damage the case bearing.
18. REMOVE REAR DRIVE PINION NUT
Rear Differential Carrier (For 2Ad-Fhv) - Disassembly. DIFFERENTIAL. Lexus IS250 IS220d GSE20 ALE20

Using SST and a hammer, unstake the staked part of the drive pinion nut.

  • SST
  • 09930-00010
  • NOTICE:
Be sure to use the SST with the tapered surface facing the shaft.
Do not grind the tip of the SST with a grinder, etc.
Completely loosen the staked part of the nut when removing it.
Do not damage the threads of the drive pinion.
Rear Differential Carrier (For 2Ad-Fhv) - Disassembly. DIFFERENTIAL. Lexus IS250 IS220d GSE20 ALE20

Using SST to hold the flange, remove the drive pinion nut.

  • SST
  • 09229-55010
    09330-00021
    09950-30012(09955-03040)
19. REMOVE REAR DRIVE PINION COMPANION FLANGE
Rear Differential Carrier (For 2Ad-Fhv) - Disassembly. DIFFERENTIAL. Lexus IS250 IS220d GSE20 ALE20

Using SST, remove the companion flange.

  • SST
  • 09950-30012(09951-03010,09953-03010,09954-03010,09955-03040,09956-03060)
  • NOTICE:
  • Apply grease to the threads and tip of the SST center bolt before use.
20. REMOVE REAR DIFFERENTIAL DUST DEFLECTOR
  • HINT:
  • Perform this procedure only when the dust deflector is damaged.
Rear Differential Carrier (For 2Ad-Fhv) - Disassembly. DIFFERENTIAL. Lexus IS250 IS220d GSE20 ALE20

Using SST and a press, remove the dust deflector.

  • SST
  • 09950-60010(09951-00440)
    09950-00020
    09950-70010(09951-07100)
21. REMOVE REAR DIFFERENTIAL CARRIER OIL SEAL
Rear Differential Carrier (For 2Ad-Fhv) - Disassembly. DIFFERENTIAL. Lexus IS250 IS220d GSE20 ALE20

Using SST, remove the oil seal from the differential carrier.

  • SST
  • 09308-00010
22. REMOVE REAR DIFFERENTIAL DRIVE PINION OIL SLINGER
Rear Differential Carrier (For 2Ad-Fhv) - Disassembly. DIFFERENTIAL. Lexus IS250 IS220d GSE20 ALE20

Remove the drive pinion oil slinger.

23. REMOVE DIFFERENTIAL DRIVE PINION
Rear Differential Carrier (For 2Ad-Fhv) - Disassembly. DIFFERENTIAL. Lexus IS250 IS220d GSE20 ALE20

Using a press, remove the drive pinion from the differential carrier.

  • NOTICE:
  • Do not drop the drive pinion.
24. REMOVE REAR DIFFERENTIAL DRIVE PINION BEARING SPACER
Rear Differential Carrier (For 2Ad-Fhv) - Disassembly. DIFFERENTIAL. Lexus IS250 IS220d GSE20 ALE20

Remove the drive pinion spacer.

25. REMOVE REAR DRIVE PINION FRONT TAPERED ROLLER BEARING
Rear Differential Carrier (For 2Ad-Fhv) - Disassembly. DIFFERENTIAL. Lexus IS250 IS220d GSE20 ALE20

Remove the rear drive pinion front tapered roller bearing inner race from the differential carrier.

Rear Differential Carrier (For 2Ad-Fhv) - Disassembly. DIFFERENTIAL. Lexus IS250 IS220d GSE20 ALE20

Using a brass bar and a hammer, remove the rear drive pinion front tapered roller bearing outer race from the differential carrier.

26. REMOVE REAR DRIVE PINION REAR TAPERED ROLLER BEARING
Rear Differential Carrier (For 2Ad-Fhv) - Disassembly. DIFFERENTIAL. Lexus IS250 IS220d GSE20 ALE20

Using SST and a press, remove the rear drive pinion rear tapered roller bearing inner race from the drive pinion.

  • SST
  • 09950-00020
  • HINT:
  • If either the drive pinion or ring gear is damaged, replace both as a set.
Rear Differential Carrier (For 2Ad-Fhv) - Disassembly. DIFFERENTIAL. Lexus IS250 IS220d GSE20 ALE20

Using a brass bar and a hammer, remove the rear drive pinion rear tapered roller bearing outer race from the differential carrier.

Remove the plate washer.

27. REMOVE DIFFERENTIAL RING GEAR
Rear Differential Carrier (For 2Ad-Fhv) - Disassembly. DIFFERENTIAL. Lexus IS250 IS220d GSE20 ALE20

Put machmarks on the ring gear and differential case.

Remove the 10 ring gear set bolts.

Rear Differential Carrier (For 2Ad-Fhv) - Disassembly. DIFFERENTIAL. Lexus IS250 IS220d GSE20 ALE20

Using a plastic hammer, tap on the ring gear to separate it from the differential case.

  • NOTICE:
  • Do not damage the ring gear.
28. INSPECT RUNOUT OF REAR DIFFERENTIAL CASE SUB-ASSEMBLY
  • HINT:
  • Perform this procedure only when the runout of the differential ring gear exceeds the specified maximum value.
Rear Differential Carrier (For 2Ad-Fhv) - Disassembly. DIFFERENTIAL. Lexus IS250 IS220d GSE20 ALE20

Install the differential case to the differential carrier.

  • NOTICE:
  • Do not damage the case bearing.
Rear Differential Carrier (For 2Ad-Fhv) - Disassembly. DIFFERENTIAL. Lexus IS250 IS220d GSE20 ALE20

Using SST and a hammer, install the case bearing outer race on the ring gear tooth side.

  • SST
  • 09608-32010
    09950-70010(09951-07200)
  • HINT:
  • Tap in the case bearing outer race until half of the side gear shaft snap ring groove of the differential carrier can be seen.
Rear Differential Carrier (For 2Ad-Fhv) - Disassembly. DIFFERENTIAL. Lexus IS250 IS220d GSE20 ALE20

Install SST to the differential carrier.

  • SST
  • 09571-50010

Tighten the SST bolt (A) until the SST disc slightly touches the case bearing outer race.

Rear Differential Carrier (For 2Ad-Fhv) - Disassembly. DIFFERENTIAL. Lexus IS250 IS220d GSE20 ALE20

Using SST and a hammer, install the case bearing outer race on the ring gear back surface side.

  • SST
  • 09608-32010
    09950-70010(09951-07200)
  • HINT:
  • Tap in the case bearing outer race until it touches the case bearing inner race roller.
Rear Differential Carrier (For 2Ad-Fhv) - Disassembly. DIFFERENTIAL. Lexus IS250 IS220d GSE20 ALE20

Using snap ring pliers, install the side gear shaft snap ring in the differential carrier on the ring gear back surface side.

Place a dial indicator on the differential case flange surface at a right angle.

Rear Differential Carrier (For 2Ad-Fhv) - Disassembly. DIFFERENTIAL. Lexus IS250 IS220d GSE20 ALE20

Using a dial indicator, measure the differential case runout.

  • Maximum runout:
  • 0.05 mm (0.0020 in.)

If the runout is greater than the maximum, replace the rear differential case with a new one.


Rear Differential Carrier (For 2Ad-Fhv) - Disassembly. DIFFERENTIAL. Lexus IS250 IS220d GSE20 ALE20

Using snap ring pliers, remove the side gear shaft snap ring on the ring gear back surface side.

Rear Differential Carrier (For 2Ad-Fhv) - Disassembly. DIFFERENTIAL. Lexus IS250 IS220d GSE20 ALE20

Tighten the SST bolt to push out the ring gear back surface side case bearing outer race.

  • SST
  • 09571-50010
  • NOTICE:
  • Do not drop the case bearing outer race.
Rear Differential Carrier (For 2Ad-Fhv) - Disassembly. DIFFERENTIAL. Lexus IS250 IS220d GSE20 ALE20

Remove the SST.

Rear Differential Carrier (For 2Ad-Fhv) - Disassembly. DIFFERENTIAL. Lexus IS250 IS220d GSE20 ALE20

Raise the ring gear side of the differential case slightly to remove the ring gear tooth side case bearing outer race.

Rear Differential Carrier (For 2Ad-Fhv) - Disassembly. DIFFERENTIAL. Lexus IS250 IS220d GSE20 ALE20

Remove the differential case from the differential carrier.

  • NOTICE:
  • Do not damage the case bearing.
29. REMOVE REAR DIFFERENTIAL CASE BEARING
  • HINT:
  • Perform this procedure only when replacing the case bearing or differential case.
Rear Differential Carrier (For 2Ad-Fhv) - Disassembly. DIFFERENTIAL. Lexus IS250 IS220d GSE20 ALE20

Using SST, remove the case bearing inner races LH and RH from the differential case.

  • SST
  • 09950-40011(09951-04020,09952-04010,09953-04030,09954-04010,09955-04061,09957-04010,09958-04011)
    09950-60010(09951-00350,09951-00480,09952-06010)
  • NOTICE:
Do not deform the bearing cage if the bearing is to be reused.
Hook the SST claw from the dent of the differential case to the bearing inner race.
Apply grease to the threads and tip of the SST center bolt before use.
30. INSPECT DIFFERENTIAL SIDE GEAR BACKLASH
Rear Differential Carrier (For 2Ad-Fhv) - Disassembly. DIFFERENTIAL. Lexus IS250 IS220d GSE20 ALE20

Hold the differential case in a vise between aluminum plates.

  • NOTICE:
  • Do not overtighten the vise.

Place a dial indicator on the tip of the side gear tooth at a right angle. Hold the pinion gear in the differential case and check that the backlash is 0 mm (0 in.).


If not, replace the rear differential case sub-assembly with a new one.