torque 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±00010), 09608±30012
(09608±04030)
HINT: Assemble the spacer and oil seal after adjusting the
tooth contact pattern.
9. INSTALL OIL SLINGER AND COMPANION FLANGE
(a) Install the oil slinger.
(b) Using SST and a press, install the companion flange. SST 09223±63010, 09325±40010
10. TEMPORARILY ADJUST DRIVE PINION PRELOAD
(a) Adjust the drive pinion preload by tightening the companion flange nut.
HINT: Using SST to hold the flange, tighten the nut.
SST 09229±55010, 09330±00021
NOTICE: As there is no spacer, tighten the nut a little at a time,
being careful not to overtighten it.
(b) Using SST and a torque wrench, measure the drive pinion preload.
SST 09229±55010
Preload (at start):
New bearing:
1.2±1.8 N Vm (12.4±18.4 kgf Vcm, 10.8±16.0 in. Vlbf)
Reused bearing
0.5±0.8 N Vm (5±8 kgf Vcm, 4.3±6.9 in. Vlbf)
SA±96±
SUSPENSION AND AXLE REAR DIFFERENTIAL
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(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
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20. INSTALL SPACER ON DRIVE PINIONInstall a new spacer on the drive pinion.
21. INSTALL DRIVE PINION AND FRONT BEARING (See page SA±96)
22. INSTALL OIL SLINGER (See page SA±96)
23. INSTALL OIL SEAL
(a) Apply the MP grease to a new oil seal lip.
(b) Using SST, install a new oil seal until its end is flash with the surface of the differential carrier.
SST 09316±60010 (09316±00010, 09316±00040)09502±12010
24. INSTALL COMPANION FLANGE Using SST and a press, install the companion flange.
SST 09223±63010, 09325±40010
NOTICE: Be careful not to damage the oil seal.
25. ADJUST DRIVE PINION PRELOAD
(a) Coat the threads and flange of a new nut with hypoid gear oilfor LSD.
(b) Using SST, tighten the nut. SST 09229±55010, 09330±00021
(c) Using SST and a torque wrench, measure the drive pinion preload.
SST 09229±55010
Preload (at starting):
New bearing
1.2 ± 1.8 N Vm (12.4 ± 18.4 kgf Vcm, 10.8 ± 16.0 in. Vlbf)
Reused bearing
0.5 ± 0.8 N Vm (5.10 ± 8.0 kgf Vcm, 4.3 ± 6.9 in. Vlbf)
±
SUSPENSION AND AXLE REAR DIFFERENTIALSA±101
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wIf the preload is greater than the specification, replace
the spacer.
w If the preload is less than the specification, retighten the
nut 13 NVm (130 kgfVcm, 9 ftVlbf) at a time until the
specified preload is reached.
Maximum torque:
490 N Vm (5,000 kgf Vcm, 362 ft Vlbf)
If the maximum torque is exceeded while retightening the
nut, replace the spacer and repeat the preload procedure.
Do not back off the nut to reduce the preload.
26. CHECK RUNOUT OF DRIVE PINION SHAFT Measure the r unout of the drive pinion shaft at a point 10 mm
(0.39 in.) from the end of the shaft.
Maximum runout:
0.08 mm (0.0031 in.)
27. INSTALL DIFFERENTIAL CASE IN CARRIER(See page SA±97)
28. INSTALL O±RING
(a) Coat a new O±ring with hypoid gear oil.
(b) Install the O±ring to the carrier retainer.
29. INSTALL OIL SEAL
(a) Using SST and a press, install a new oil seal to the carrier retainer.
SST 09608±32010, 09608±35014 (09608±06020)
(b) Coat the MP grease to the oil seal lip.
30. INSTALL SIDE BEARING RETAINER (See page SA±97)
31. RECHECK BACKLASH, TOTAL PRELOAD AND TOOTH CONTACT PATTERN
SA±102
±
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32. STAKE DRIVE PINION NUT
33. INSTALL SNAP RING TO SIDE GEAR SHAFT
(a) Install a new snap ring to the shaft.
(b) Coat the MP grease to the snap ring.
34. INSTALL SIDE GEAR SHAFTSUsing a hammer and brass bar install the side gear shafts.
HINT: Whether or not the side gear shaft is making contact
with the pinion shaft can be known by the sound or feeling
when driving it in.
NOTICE: Be careful not to damage the oil seal.
35. REMOVE DIFFERENTIAL CARRIER FROM OVERHAULSTAND, ETC.
36. INSTALL DIFFERENTIAL CARRIER COVER
(a) Clean the contact surfaces of the carrier and cover of any residual packing material using cleaner.
(b) Coat the seal packing to the carrier or cover.
Seal packing:
Part No. 08826±00110, THREE BOND 1389 or equivalent
NOTICE: After installing the cover, wait at least 1 hour before
filling it with oil or running the vehicle.
(c) Install the carrier cover to the carrier with the 8 bolts.
Torque: 47 N Vm (475 kgf Vcm, 34 ft Vlbf)
(d) Install the breather plug.
Torque: 21 N Vm (210 kgf Vcm, 15 ft Vlbf)
±
SUSPENSION AND AXLE REAR DIFFERENTIALSA±103
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PREPARATION
SST (SPECIAL SERVICE TOOLS)
SA0A5±02
RECOMMENDED TOOLS
SA06X±03
EQUIPMENT
SA0A7±01
\
 
\

\

Torque wrench 


SA±106±
SUSPENSION AND AXLE REAR SUSPENSION
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(d) Install the coil spring to the shock absorber.HINT: Fit the lower end of the coil spring into the gap of the
spring seat of the shock absorber.
(e) Install the suspension support to the rod and temporarily tighten a new nut.
(f) Rotate the suspension support so that the rod and one of the bolts on suspension support are aligned with the lower
bushing.
(g) Remove the SST. HINT: After removing the SST, again check the direction of
the suspension support.
2. INSTALL SHOCK ABSORBER WITH COIL SPRING TO VEHICLE
(a) Install the shock absorber with the coil spring to the vehicle
with the 3 nuts.
Torque: 25 N Vm (260 kgf Vcm, 19 ft Vlbf)
(b) Torque the temporarily tightened nut in the middle of the
suspension support.
Torque: 27 N Vm (280 kgf Vcm, 20 ft Vlbf)
±
SUSPENSION AND AXLE REAR SUSPENSIONSA±111
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3. INSTALL SHOCK ABSORBER TO REAR AXLE CARRIER
(a) Install the bolt from the rear vehicle.
(b) Temporarily install the nut.
4. INSTALL REAR BRAKE CALIPERInstall the brake caliper to the rear axle carrier with the 2 bolts.
Torque: 104 N Vm (1,065 kgf Vcm, 77 ft Vlbf)
5. STABILIZE SUSPENSION
(a) Install the rear wheel and lower vehicle
(b) Bounce the vehicle up and down several times to stabilize the
suspension.
(c) Jack up the vehicle and remove the rear wheel.
6. TIGHTEN BOLT AND NUT
(a) Support the lower arm with a jack.
(b) Tighten the bolt and nut.
Torque: 143 N Vm (1,460 kgf Vcm, 106 ft Vlbf)
7. INSTALL REAR WHEEL AND LOWER VEHICLE
Torqre: 137 N Vm (1,050 kgf Vcm, 101 ft Vlbf)
8. CHECK REAR WHEEL ALIGNMENT
(See page SA±10)
SA±112
±
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(c) Remove the bolts and nuts and the upper arm.
UPPER SUSPENSION ARM BALL JOINT
INSPECTION
SA0SJ±04
INSPECT BALL JOINT FOR ROTATION CONDITION
(a) Flip the ball joint stud back and forth 5 ti mes, as shown in the
illustration, before installing the nut.
(b) Using torque wrench, turn the nut continuously one turn every 2±4 seconds and take the torque reading on the 5th
turn.
Torque (turning):
1.0 ± 3.4 N Vm (10 ± 35 kgf Vcm, 9 ± 30 in. Vlbf)
If not with in specification, replace the upper suspension arm.
UPPER ARM INSTALLATION
SA1A7±01
HINT: If replace the nut, assemble the nut and E±ring to the
washer with lock protrusion before install.
1. INSTALL UPPER ARM
(a) Install the upper arm to the body with the bolts and nuts. HINT: Install the tip of the nut lock facing down.
Torque: 164 N Vm (1,670 kgf Vcm, 121 ft Vlbf)
±
SUSPENSION AND AXLE REAR SUSPENSIONSA±115
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(b) Connect the upper arm to the axle carrier with a new nut.
Torque: 109 NVm (1,100 kgf Vcm, 80 ft Vlbf)
2. INSTALL REAR DRIVE SHAFT
(See page SA±66)
3. INSTALL ABS WIRE HARNESS CLAMP Connect the ABS wire harness clamp to the upper arm with
the two bolts.
4. INSTALL BRAKE CALIPER Install the brake caliper to the rear axle carrer with the 2 bolts.
Torque: 104 N Vm (1,065 kgf Vcm, 77 ft Vlbf)
5. INSTALL REAR WHEEL AND LOWER VEHICLE
SA±116
±
SUSPENSION AND AXLE REAR SUSPENSION
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