torque LEXUS SC400 1991 Service Repair Manual

SERVICE SPECIFICATIONS
SERVICE DATA
StarterRated voltage and output power12 V 1.4 kW
No±load characteristicCurrent 90 A or less at 11.5 V
rpm 3,500 rpm or more
Brush lengthSTD 15.5 mm0.610 in.
Limit 10.0 mm0.394 in.
CommutatorOuter diameter STD 30 mm1.18 in.
Limit 29 mm1.14 in.
Undercut depth STD 0.6 mm0.024 in.
Limit 0.2 mm0.008 in.
Circle runout Limit 0.05 mm0.0020 in.
Spring installed loadSTD 18±24 N
(1.79 ± 2.41 kgf, 3.9 ± 5.3 lbf)
Limit12 N1.2 kgf2.6 lbf
TORQUE SPECIFICATIONS
Part tightenedNVmkgf Vcmft Vlbf
Starter x Cylinder block3940029
±
STARTING SYSTEM Service SpecificationsST±15
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RECOMMENDED TOOLS
SR0FW±03
LUBRICANT
SR015±05
 Item Capacity Classification
 
Power steering fluid
1 0 liters (1 1 US qts 0 9 lmpqts)ATF DEXRON[II 

Total1.0 liters (1.1 US qts, 0.9 lmp.qts)AT F DEXRON[ II
EQUIPMENT
SR0FX±01\
 
\

\
Caliper gauge
 

Power steering pump
\
 \
Dial indicatorSteering rack
\
 
\

\
MicrometerPower steering pump
\
 
\

\

Oil pressure gauge
\
 \
Torque wrench
\
 
\

\

Vacuum gaugeGear housing
SSM (SPECIAL SERVICE MATERIALS)
SR0FY±01 08833±00080 Adhesive 1344, Rack housing cap  THREE BOND 1344, Rack guide spring cap
 


 


LOCTITE 242 or equivalent 


Rack guide spring cap lock nut
SR±112±
STEERING POWER STEERING
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2. INSTALL PUMP ASSEMBLYTorque the bolts and nut on the pump assembly in the order
shown.
Torque:
Bolt 39 N Vm (400 kgf Vcm, 29 ft Vlbf)
Nut 43 N Vm (440 kgf Vcm, 32 ft Vlbf)
3. CONNECT PRESSURE TUBE
Make sure the stopper is touching the pump housing, as
shown, then torque the union bolt.
Torque: 49 N Vm (500 kgf Vcm, 36 ft Vlbf)
4. BLEED POWER STEERING SYSTEM
(See page SR±115)
±
STEERING POWER STEERINGSR±119
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(h) Coat the 10 vane plates with power steering fluid.
(i) Install the 10 vane plates with the round end facing outward.
(j) Match the wide hole with the longer straight pin and press inthe side rear plate with a press.
NOTICE: Be careful not to damage the O±ring.
4. INSTALL WAVE WASHERInstall the wave washer so that its protrusions fit into the slots
in the side rear plate.
5. INSTALL REAR BRACKET
(a) Coat a new O±ring with power steering fluid and install it to the rear bracket.
(b) Install the rear bracket and tighten the 4 bolts.
Torque: 39 N Vm (400 kgf Vcm, 29 ft Vlbf)
SR±128±
STEERING POWER STEERING
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6. MEASURE PUMP SHAFT PRELOAD
(a) Check that the shaft rotates smoothly without abnormalnoise.
(b) Temporarily install the pulley nut and check the rotating
torque.
Rotating torque:
0.1 N Vm (1.0 kgf Vcm, 0.9 in. Vlbf) or less
7. INSTALL FLOW CONTROL VALVE, SPRING, SPRING
SEAT AND PRESSURE PORT UNION
(a) Coat new O±rings with power steering fluid and install them
to the spring seat and pressure port union.
HINT: Install a thick O±ring to the spring seat and a thin O±
ring to the pressure port union.
(b) Install the spring seat with the bolt hole facing out±ward.
(c) Using snap ring pliers, install a new snap ring.
(d) Install spring and valve to the front housing.
(e) Install and torque the pressure port union.
Torque: 69 N Vm (700 kgf Vcm, 51 ft Vlbf)
±
STEERING POWER STEERINGSR±129
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8. INSTALL SUCTION PORT UNION
(a) Coat a new O±ring with power steering fluid and install it tothe suction port union.
(b) Install the suction port union with the 2 bolts.
Torque: 13 N Vm (130 kgf Vcm, 9 ft Vlbf)
9. INSTALL PUMP PULLEY
(a) Install the pulley and nut to the shaft.
(b) Using SST, torque the set nut.
SST 09278±54012
Torque: 43 N Vm (440 kgf Vcm, 32 ft Vlbf)
SR±130±
STEERING POWER STEERING
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(b) Align matchmarks on the intermediate shaft and control valve
shaft and connect them.
Torque: 35 N Vm (360 kgf Vcm, 36 ft Vlbf)
4. CONNECT PRESSURE AND RETURN TUBES
After inserting the rotation stopper in the valve housing holes,
tighten the union bolts.
Torque: 49 N Vm (500 kgf Vcm, 36 ft Vlbf)
5. CENTER SPIRAL CABLE
If the steering wheel has been removed, or the steering
wheel may have moved during the operation, always perform
centering of the spiral cable.
(See page SR±11)
6. CHECK STEERING WHEEL CENTER POINT
7. BLEED POWER STEERING SYSTEM (See page SR±115)
8. CHECK TOE±IN (See page SA±5)
SR±144
±
STEERING POWER STEERING
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(c) Place matchmarks on the intermediate shaft and controlvalve shaft.
(d) Loosen the bolt on the upper side of the intermediate shaft, remove the bolt on the lower side and disconnect the
intermediate shaft.
2. DISCONNECT TIE ROD ENDS
(a) Remove the cotter pin and nut.
(b) Using SST, disconnect the tie rod end from the knuckle arm. SST 09628±62011
3. CONNECT INTERMEDIATE SHAFT
(a) Set the gear housing so that it matches the dimensions shown below, with the gear housing at the center point.
(b) Align matchmarks on the intermediate shaft and control valve
shaft and connect them.
Torque: 35 N Vm (360 kgf Vcm, 26 ft Vlbf)
SR±146±
STEERING POWER STEERING
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4. CONNECT PRESSURE AND RETURN TUBESAfter inserting the rotation stopper in the valve housing holes,
tighten the union bolts.
Torque: 46 N Vm (500 kgf Vcm, 36 ft Vlbf)
5. CENTER SPIRAL CABLE
If the steering wheel has been removed, or the steering
wheel may have moved during the operation, always perform
centering of the spiral cable.
(See page SR±11)
6. CHECK STEERING WHEEL CENTER POINT
7. BLEED POWER STEERING SYSTEM (See page SR±115)
8. CHECK TOE±IN
(See page SA±5)
±
STEERING POWER STEERINGSR±147
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7. IF NECESSARY, REPLACE PRESSURE CONTROLVA LV E
(a) Using a hexagon wrench, remove the 3 bolts.
(b) Remove the 3 O±rings from the housing.
(c) Coat 3 new O±rings with power steering fluid, and install them on the control valve housing.
(d) Using a hexagon wrench, install a new pressure control valve
with the 3 bolts.
Torque: 18 N Vm (185 kgf Vcm, 13 ft Vlbf)
STEERING GEAR HOUSING ASSEMBLY
SR0P0±01
1. COAT WITH POWER STEERING FLUID OR
MOLYBDENUM DISULPHIDE LITHIUM BASE GREASE
(See page SR±148)
2. INSTALL RACK HOUSING OIL SEAL AND SPACER
(a) Coat a new oil seal lip with power steering fluid.
(b) Insert SST into the oil seal and spacer. SST 09631±12020, 09631±32010
NOTICE:
w Make sure you install the oil seal facing the correct
direction.
w Take care that the oil seal does not get reversed as you
install it.
(c) Softly tap in the spacer and oil seal.
±
STEERING POWER STEERINGSR±157
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