1991 LEXUS SC400 Service Repair Manual

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Page 3225 of 4087

LEXUS SC400 1991 Service Repair Manual
(b) Remove following parts from the differential case.wPinion shaft
w 2 differential pinions
w 2 pinion thrust washers
w 2 side gears
w 2 side gears thrust washers
DUST DEFLECTOR AND DUST COVER
REP

Page 3226 of 4087

LEXUS SC400 1991 Service Repair Manual
HINT: If the dust cover does not fit tightly against the flange
of the side gear shaft, use a screwdriver to drive it down tight.
DIFFERENTIAL CARRIER ASSEMBLY
SA0V6±04
1. ADJUST DIFFERENTIAL PINIO

Page 3227 of 4087

LEXUS SC400 1991 Service Repair Manual
(b) Stake the differential case.
3. INSTALL RING GEAR ON DIFFERENTIAL CASE
(a) Clean the contact surfaces of the differential case and thethreads of the ring gear and differential case.
(b) Heat

Page 3228 of 4087

LEXUS SC400 1991 Service Repair Manual
5. INSTALL SIDE BEARINGSUsing SST and a press, install the side bearings.
SST 09550±10012 (09252±10010, 09558±10010)09710±30050
6. INSTALL DRIVE PINION BEARING OUTER RACES AND ADJUSTING WASHER

Page 3229 of 4087

LEXUS SC400 1991 Service Repair Manual
8. INSTALL DRIVE PINION AND FRONT BEARING
(a) Install the drive pinion in the differential carrier.
(b) Using SST and a press, install the front bearing on the drivepinion.
SST 09316±60010 (09316

Page 3230 of 4087

LEXUS SC400 1991 Service Repair Manual
HINT: For vehicle which have run 8,000 km (5,000 miles) or
less, if the preload value measured disassembly is greater
than the specification for a reused bearing, return the preload
to the same as be

Page 3231 of 4087

LEXUS SC400 1991 Service Repair Manual
(b) Tighten the 8 bolts.
Torque: 22 NVm (225 kgf Vcm, 16 ft Vlbf)
14. CHECK RING GEAR BACKLASH
Using dial gauge, measure the backlash of the ring gear at
3 positions at least.
Backlash (average val

(b) Tighten the 8 bolts.
Torque: 22 NVm (225 kgf Vcm, 16 ft Vlbf)
14. CHECK RING GEAR BACKLASH
Using dial gauge, measure the backlash of the ring gear at
3 positions at least.
Backlash (average value):
0.08±0.13 mm (0.0031±0.0051 in.)
NOTICE: The difference between the maximum and minimum
measured values must be less than 0.05 mm (0.0020 in.)
HINT: The measured values should be used for reference
when selecting washers, so make a memo of the values.
If the backlash is not within the specification replace the
washer on the ring gear side with one of a different thickness
using the following procedure.
Adjusting washer thickness: mm (in.)
No. Thickness No. Thickness No. Thickness 02 2.02 (0.0795) 32 2.32 (0.0913) 62 2.62 (0.1031) 04 2.04 (0.0803) 34 2.34 (0.0921) 64 2.64 (0.1039)
06 2.06 (0.0811) 36 2.36 (0.0929) 66 2.66 (0.1047)
08 2.08 (0.0819) 38 2.38 (0.0937) 68 2.68 (0.1055)
10 2.10 (0.0827) 40 2.40 (0.0945) 70 2.70 (0.1063)
12 2.12 (0.0835) 42 2.42 (0.0953) 72 2.72 (0.1071)
14 2.14 (0.0843) 44 2.44 (0.0961) 74 2.74 (0.1079)
16 2.16 (0.0850) 46 2.46 (0.0969) 76 2.76 (0.1087)
182.18 (0.0858)482.48 (0.0976)782.78 (0.1094) 20 2.20 (0.0866) 50 2.50 (0.0984) 80 2.80 (0.1102) 22 2.22 (0.0974) 52 2.52 (0.0992) 82 2.82 (0.1110) 24 2.24 (0.0882) 54 2.54 (0.1000) 84 2.84 (0.1118) 26 2.26 (0.0890) 56 2.56 (0.1008) 86 2.86 (0.1126)
28 2.28 (0.0898) 58 2.58 (0.1016)
30 2.30 (0.0906) 60 2.60 (0.1024)
15. MEASURE TOTAL PRELOAD
Using SST and a torque wrench, measure the total preload.
SST 09229±55010
Total preload
In addition to drive pinion preload
0.5±0.8 N Vm (5±8 kgf Vcm, 4.3±6.9 in. Vlbf)
SA±98±
SUSPENSION AND AXLE REAR DIFFERENTIAL
WhereEverybodyKnowsYourName

Page 3232 of 4087

LEXUS SC400 1991 Service Repair Manual
If the measure preload is less than specification, replace the
washer of the ring gears tooth surface side with a thicker
one.
If the preload is greater than the specification, replace the
washer of

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