torque LEXUS SC400 1991 Service Repair Manual

STRUT ROD BUSHING REPLACEMENT
SA0WC±01
REPLACE STRUT ROD BUSHING
Using SST, replace the strut rod bushing.
SST 09710±30020 (09710±03110, 09710±03120)
LOWER SUSPENSION ARM NO.1 AND
NO. 2 BALL JOINT INSPECTION
SA0UP±02
INSPECT BALL JOINT FOR ROTATION CONDITION
(a) Flip the ball joint stud back and forth 5 times, before installing the nut.
(b) Using a torque wrench, turn the nut continuously one turn every 2±4 seconds and take the torque reading on the 5th
turn.
Torque:
Lower suspension arm No.1
1.0 ± 3.4 N Vm (10 ± 35 kgf Vcm, 9 ± 30 in. Vlbf)
Lower suspension arm No.2 1.0 ± 3.4 N Vm (10 ± 35 kgf Vcm, 9 ± 30 in. Vlbf)
If not within specification, replace the lower suspension arm
No.1 or/and No.2.
LOWER SUSPENSION ARMS AND
STRUT ROD INSTALLATION
SA1A9±01
1. INSTALL NO.2 LOWER SUSPENSION ARM
(a) Install the l ower suspension arm to the carrier with a new nut.
Torque: 150 NVm (1,525 kgf Vcm, 110 ft Vlbf)
(b) Connect the lower suspension arm to the body.
(c) Temporarily install the adjusting cam and nut.
(d) Align matchmarks on the adjusting cam and body.
SA±120
±
SUSPENSION AND AXLE REAR SUSPENSION
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(e) Temporarily connect the shock absorber to the lower arm with
the bolt and nut.
(f) Connect the stabilizer bar link to the lower suspension arm with the nut.
Torque: 74 N Vm (750 kgf Vcm, 54 ft Vlbf)
2. INSTALL NO.1 LOWER SUSPENSION ARM
(a) Install the lower suspension arm to the axle carrier with a new
nut.
Torque: 59 N Vm (600 kgf Vcm, 43 ft Vlbf)
(b) Connect the lower suspension arm to the body.
(c) Temporarily install the adjusting cam and nut.
(d) Align the matchmarks on the adjusting cam and body.
3. INSTALL STRUT ROD
(a) Temporarily install the strut rod to the body with the bolt and
nut.
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SUSPENSION AND AXLE REAR SUSPENSIONSA±121
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(b) Temporarily connect the strut rod to the axle carrier with thebolt and nut.
4. INSTALL BRAKE CALIPER Install the brake caliper 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 rear wheel.
6. TORQUE BOLTS AND NUTS
(a) Support the rear axle carrier with a jack.
(b) Torque the bolts and nuts of the strut rod.
Torque: 184 N Vm (1,880 kgf Vcm, 136 ft Vlbf)
(c) Torque the nut.
Torque: 143 N Vm (1,460 kgf Vcm, 106 ft Vlbf)
SA±122±
SUSPENSION AND AXLE REAR SUSPENSION
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(d) Torque the nut on the body side of the No.1 lower suspension
arm.
Torque: 184 N Vm (1,880 kgf Vcm, 136 ft Vlbf)
HINT: Align the matchmarks on the adjusting cam and body.
(e) Torque the nut on the body side of the No.2 lower suspension
arm.
Torque: 184 N Vm (1,880 kgf Vcm, 136 ft Vlbf)
HINT: Align the matchmarks on the adjusting cam and body.
7. INSTALL REAR WHEEL AND LOWER VEHICLE
Torque: 103 N Vm (1,050 kgf Vcm, 76 ft Vlbf)
8. CHECK REAR WHEEL ALIGNMENT
(See page SA±10)
±
SUSPENSION AND AXLE REAR SUSPENSIONSA±123
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STABILIZER BAR REMOVAL
SA0WD±01
1. DISCONNECT EXHAUST PIPE
2. REMOVE BOTH SIDE STABILIZER BAR LINKSRemove the nuts and the stabilizer bar links.
3. REMOVE STABILIZER BAR Remove both side the bolts and remove the stabilizer bar with
the brackets, cushions and links.
4. REMOVE BOTH SIDE CUSHIONS AND BRACKETS
STABILIZER BAR LINK BALL JOINT
INSPECTION
SA0UT±03
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 a torque wrench, turn the nut continuously one turn every 2±4 seconds and take the torque reading on the 5th
turn.
Torque (turning):
0.05 ± 1.0 N Vm (0.5 ± 10 kgf Vcm, 2.6 ± 8.7 in Vlbf)
If not within specification, replace the stabilizer bar link.
±
SUSPENSION AND AXLE REAR SUSPENSIONSA±125
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STABILIZER BAR INSTALLATION
SA0WE±02
1. INSTALL BOTH SIDE CUSHIONS AND BRACKET
(a) Install the cushion so as to touch the line painted on thestabilizer bar.
HINT: Install the cushion to the outside of the line.
(b) Install the brackets.
2. INSTALL STABILIZER BAR Install the stabilizer bar with the brackets, cushions and bolts.
Torque: 28 N Vm (290 kgf Vcm, 21 ft Vlbf)
3. INSTALL BOTH SIDE STABILIZER BAR LINKS
Install the stabilizer bar links to the stabilizer bar and the No.2
lower suspension arm with the nuts.
Torque: 74 N Vm (750 kgf Vcm, 54 ft Vlbf)
4. CONNECT EXHAUST PIPE
SA±126
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SUSPENSION AND AXLE REAR SUSPENSION
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TORQUE SPECIFICATIONS
SA0WG±03
(FRONT)
\
 \
Part tightened NVm kgf Vcm ft Vlbf
\
 \
Hub nut 103 1,050 76
\
 \
Front and rear adjusting cam bolt 226 2,300 166
\
 \
Axle hub lock nut 199 2,030 147
\
 \
Lower ball joint X Steering knuckle 125 1,270 92
\
 \
Tie rod end X Steering knuckle 49 500 36
\
 \
Steering knuckle X Upper suspension arm 103 1,050 76
\
 \
Lower ball foint X Lower suspension arm 127 1,300 94
\
 \
Disc brake caliper X Steering knuckle 11 8 1,200 87
\
 \
Speed sensor set bolt 103 80 76 in. Vlbf
\
 \
Front shock absorber X Body 35 360 26
\
 \
Front shock absorber X Lower suspension arm 143 1,460 106
\
 \
Upper suspension arm mounting nut 164 1,670 121
\
 \
Piston rod lock nut 29 300 22
\
 \
Stabilizer link X Lower suspension arm 74 750 54
\
 \
Stabilizer link X Stabilizer bar 74 750 54
\
 \
Stabilizer bar bracket X Body 18 180 13
\
 \
Steering knuckle X Disc brake dust cover 19 195 14
(REAR)
\
 \
Part tightened N Vm kgf Vcm ft Vlbf
\
 \
Shock absorber X Lower suspension arm 143 1,460 106\
 \
Upper arm X Body 164 1,670 271\
 \
Rear axle carrier X Brake caliper 104 1,065 77\
 \
No. 1 lower arm X Rear axle carrier 59 600 43\
 \
No. 1 lower arm X Body 184 1,880 136
\
 \
No. 2 lower arm X Rear axle carrier 150 1,525 11 0
\
 \
No. 2 lower arm X Body 184 1,880 136
\
 \
Strut rod X Rear axle carrier 184 1,880 136
\
 \
Strut rod X Body 184 1,880 136
\
 \
Rear drive shaft X Axle hub 289 2,950 213
\
 \
Upper ball joint X Rear axle carrier 109 1,110 80
\
Parking brake backing plate X Rear axle carrier2626019\
 \
Rear drive shaft X Differential 83 850 64\
 
\

\
Differential mounting bolt \
Front
Rear 

147
142 

1,500
1,450 

108
105
\
 \
Differential carrier cover set bolt 47 475 34
\
 \
Suspension support X Body 27 280 20
\
 \
Suspension support X Shock absorber rod 27 280 20
\
 \
Stabilizer bar link nut 74 750 54
\
 \
Stabilizer bar bushing retainer bolt 28 290 21
±
SUSPENSION AND AXLE SERVICE SPECIFICATIONSSA±129
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5. ADJUST CAMBER AND CASTERSpecifications:
 


Camber
Left±right error 


0
01 ' + 30 '
30 ' or less
 


Caster
Left±right error 


2
56 ' + 30 '
30 ' or less
(a) Remove the engine under cover.
(b) Loosen the front and/or rear adjusting cam nuts.
(c) Adjust the camber and caster by front and/or rear adjusting
cams.
(See adjustment chart )
(d) Torque the front and/or rear adjusting cam nuts.
Torque: 226 N Vm (2,300 kgf Vcm, 166 ft Vlbf)
6. ADJUST TOE±IN
(a) Remove the boot clamps.
(b) Loosen the tie rod end lock nuts.
(c) Turn the left and right tie rod ends an amount to adjust the
toe±in.
Toe±in (total):
A+B 0.1  + 0.1 
C±D 1 + 1 mm (0.04 + 0.04 in.)
HINT: Insure that the lengths of the left and right tie rods are
the same.
Tie rod end length left±right error:
Less than 1.5 mm (0.059 in.)
SA±6±
SUSPENSION AND AXLE WHEEL ALIGNMENT
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(d) Tighten the tie rod end lock nut.
Torque: 56 NVm (570 kgf Vcm, 41 ft Vlbf)
(e) Place the boot on the seat and clip it.
HINT: Insure that the boots are not twisted.
7. INSPECT WHEEL ANGLE Wheel angle:
 

Inside wheel
 

37
04 '
(35 04 ' ~ 38 04 ')
 

Outside wheel
(reference) 

32
23 '
If wheel angle differ from the standard specifications, check
to see if the lengths of the left and right tie rods are the same.
HINT: If the tie rods lengths are not equal, the wheel angle
can not be adjusted properly.
Reinspect the toe±in after adjusting the tie rods lengths.
±
SUSPENSION AND AXLE WHEEL ALIGNMENTSA±7
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Length:(E±F) or (F±E) should be less 4.0 mm.
If not, adjust the length of the arms by turning the adjusting
cam, as shown, until (E±F) or (F±E) is less than 4.0 mm.
(b) Measure the camber and toe±in. Specifications:
 


Camber
Left±right error 


±0

53 ' + 30 '
30' or less
 


Toe±in 


A+B 0.4

+ 0.1

C±D 4.5 + 1 mm (0.18 + 0.04 in.)
If the camber and toe±in are still not within the specification,
adjust the camber and toe±in with the adjusting cam.
(c) Loosen and adjust the No.1 and/or No.2 cams.
(d) Adjust camber and toe±in by turning the No.1 and/ or No.2 cams.
(See adjustment chart )
(e) Torque the No.1 and/or No.2 cam nuts.
Torque: 184 N Vm (1,880 kgf Vcm, 134 ft Vlbf)
±
SUSPENSION AND AXLE WHEEL ALIGNMENTSA±11
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