torque LEXUS SC400 1991 Service Repair Manual

SERVICE SPECIFICATIONS
SERVICE DATA
PR01M±06 Shaft runout Limit\
 \
0.8 mm (0.031 in.)
 

Joint angleNo.2 joint±1
5 05 ' + 36 '
  No.3 joint\
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15 01 ' + 36 '
TORQUE SPECIFICATIONS
PR01N±07\
 
\

\
Part tightened
 

N
Vm
 

kgf
Vcm
 

ft
Vlbf
\
 \
Intermediate shaft X Transmission 79 805 58
\
 \
Propeller shaft X Differential 79 805 58
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\
Crossmember X Body 

13 

130 

8
\
 \
Exhaust center pipe X Exhaust rear pipe 19 195 14
\
 \
Exhaust center pipe X Exhaust front pipe 43 440 32
\
 \
Exhaust front pipe X Exhaust manifold 43 440 32\
 
\

\
Center support bearing X Body
 

49
 

500
 

36
\
 \
Heat insulator X Body 5.4 55 48 in.
Vlbf
±
PROPELLER SHAFT SERVICE SPECIFICATIONSPR±19
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PREPARATION
SST (SPECIAL SERVICE TOOLS)
PR02W±03
EQUIPMENT
PR02X±01\
 
\


\

\

Torque wrench
 




\
 
\

\

Dial indicator
\
 
\

\
Vernier calipers
±
PROPELLER SHAFT PREPARATIONPR±21
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6. INSTALL FLANGE ON INTERMEDIATE SHAFT
(a) Coat the spline of the intermediate with MP grease.
(b) Place the flange on the shaft and align the matchmarks.HINT: If replacing either the center flange or intermediate
shaft, reassemble them so that the front yoke of the inter-
mediate shaft and the rear yoke of the propeller shaft are fac-
ing in the same direction.
(c) Using SST to hold the flange, press the bearing into position by tightening down a new nut.
SST 09330±00021
Torque: 181 N Vm (1,850 kgf Vcm, 134 ft Vlbf)
(d) Loosen the nut.
(e) Torque the nut again.
Torque: 69 N Vm (700 kgf Vcm, 51 ft Vlbf)
(f) Using a punch and a hammer, stack the shaft.
7. INSTALL PROPELLER SHAFT
(a) Align the matchmarks on the flanges and connect the flanges
with 4 bolts, washers and nuts.
HINT: If replacing either the center flange or intermediate
shaft, reassemble them so that the front yoke of the inter-
mediate shaft and the rear yoke of the propeller shaft are fac-
ing in the same direction.
(b) Torque the bolts and nuts.
Torque: 74 N Vm (750 kgf Vcm, 54 ft Vlbf)
PROPELLER SHAFT INSTALLATION
PR04M±01
1. INSTALL PROPELLER SHAFT
(a) Apply grease to the flexible coupling centering bushings.
Grease:
Molybdenum disulphide lithium base, NLGI No.1 or
No.2.
PR±28±
PROPELLER SHAFT PROPELLER SHAFT
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(b) Remove SST.
(c) Insert the yoke into the transmission.
(d) Align the matchmarks and install the propeller shaft on thedifferential with the 3 bolts, washers and nuts.
NOTICE: Bolts should be inserted from the propeller
shaft side.
Torque: 79 N Vm (805 kgf Vcm, 58 ft Vlbf)
If using a new propeller shaft (w/ Phasemarks)
Install the propeller shaft phasemarks and differential phase-
marks so that their respective alignment phasemarks match.
If the propeller shaft phasemarks and differential phase-
marks do not align, install the propeller shaft and differential
alignment phasemarks are as close together as possible.
(w/o Phasemarks)
Install the propeller shaft.
(See page PR±28)
±
PROPELLER SHAFT PROPELLER SHAFTPR±29
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(f) Temporarily install the center support bearing set bolts withthe adjusting washers.
HINT: Use the adjusting washers which were removed.
(g) Torque the center support bearing set bolts.
Torque: 49 N Vm (500 kgf Vcm, 36 ft Vlbf)
HINT: Adjust the center support bearing to keep the intervals,
as shown with the vehicle in the unladen condition.
Under the same condition, check if the center line of the cen-
ter support bearing is at right angles to the shaft axial direc-
tion.
2. INSPECT JOINT ANGLE (See page PR±32)
NOTICE: The joint angle should by all means be checked
when the propeller shaft is removed and installed.
3. INSTALL CROSSMEMBER BRACE Install the center floor crossmember brace and torque the 4
bolts.
Torque: 13 N Vm (130 kgf Vcm, 9 ft Vlbf)
4. INSTALL HEAT INSULATOR
Install the heat insulator and torque the 4 nuts.
Torque: 5.4 N Vm (55 kgf Vcm, 48 in. Vlbf)
5. INSTALL EXHAUST CENTER PIPE
(a) Install new gaskets.
(b) Install the exhaust center pipe.
(c) Connect the exhaust center pipe to the 2 rings.
(d) Install and torque the new 4 nuts.
Torque: 19 N Vm (195 kgf Vcm, 14 ft Vlbf)
PR±30±
PROPELLER SHAFT PROPELLER SHAFT
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6. INSTALL EXHAUST FRONT PIPE
(a) Install new gaskets.
(b) Install the front pipe.
(c) Install and torque the 4 bolts and new nuts.
Torque: 43 NVm (440 kgf Vcm, 32 ft Vlbf)
(d) Connect both oxygen sensor with heat insulator.
HINT: When connecting the oxygen sensor, turn it clockwise
about 3 times.
NOTICE: After installing the oxygen sensor, check that
the wire is not twisted.
(e) Tighten the oxygen sensors.
Torque: 44 N Vm (450 kgf Vcm, 33 ft Vlbf)
(f) Connect the oxygen sensor grommets to the floor.
±
PROPELLER SHAFT PROPELLER SHAFTPR±31
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23. REINSTALL THEFT DETERRENT HORN(a) Install the theft deterrent horn with the bolt.
(b) Connect the connector.
24. REINSTALL RH CYLINDER HEAD COVER (a) Remove any oil packing (FIPG) material.
(b) Apply seal packing to the cylinder head as shown in theillustration.
Seal packing: Part No. 08826±00080 or equivalent
(c) Install the gasket to the cylinder head cover.
(d) Install the seal washer to the mounting bolt.
(e) Install the cylinder head cover with the eight bolts.
Torque: 5.9 N Vm (60 kgf Vcm, 52 in. Vlbf)
(g) Connect the four high±tension cords to the spark plugs.
(h) Install the rear and front high±tension cord clamps with
the two bolts.
HINT: Place the front and rear ends of the front high±tension
cord clamp on the rear high±tension cord clamp and lower
high±tension cord cover.
(i) Fit the high±tension cords to the high±tension cord clamps. (See page IG±16)
25. REINSTALL LH CYLINDER HEAD COVER (a) Remove any oil packing (FIPG) material.
(b) Apply seal packing to the cylinder head as shown in theillustration.
Seal packing: Part No. 08826±00080 or equivalent
EM±22±
ENGINE MECHANICAL Engine Tune±Up
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(c) Install the gasket to the cylinder head cover.
(d) Install the seal washer to the mounting bolt.
(e) Install the cylinder head cover with the eight bolts.
Torque: 5.9 NVm (60 kgf Vcm, 52 in. Vlbf)
(f) Connect the two engine wire connectors.
(g) Connect the four injector connectors.
(h) Install the engine wire to the two wire clamps on the
delivery pipe.
(i) Connect the four high±tension cords to the spark plugs.
(j) Install the rear and front high±tension cord clamps with the two bolts.
HINT: Place the front and rear ends of the front high±tension
cord clamp on the rear high±tension cord clamp and lower
high±tension cord cover.
(k) Fit the high±tension cords to the high±tension cord clamps. (See page IG±16)
26. REINSTALL THROTTLE BODY (a) Connect the following hoses:(1) PCV hose from throttle body
(2) Water by±pass hose from throttle body
±
ENGINE MECHANICAL Engine Tune±UpEM±23
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(b) Install a new gasket and throttle body with the two boltsand two nuts.
Torque: 18 N Vm (185 kgf Vcm, 13 ft Vlbf)
HINT: Use bolts 40 mm (1.57 in.) in length.
(c) Install the water by±pass pipe (from rear water by±pass
joint) to the clamp on the engine wire cover.
(d) Connect the following hoses: (1) Water by±pass hose to the ISC valve
(2) (USA Spec.) Vacuum hose to throttle body
(3) (Exc. USA Spec.) Three vacuum hoses to throttle body
(e) Connect the following connectors: (1) Throttle position sensor connector
(2) (w/ TRAC) Sub±throttle position sensor connector
(3) (w/ TRAC) Sub±throttle actuator
27. REINSTALL HEATER WATER VALVE (a) Install the water valve and bracket assembly with thetwo bolts.
(b) Install the engine wire clamp with the bolt.
(c) Connect the VSV connector.
EM±24
±
ENGINE MECHANICAL Engine Tune±Up
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28. REINSTALL RH NO.3 TIMING BELT COVER(a) Install the three gaskets to the timing belt cover.
(b) Fit portion A of the timing belt cover, matching it with the
lower high±tension cord cover.
(c) Install the timing belt cover with the three bolts.
29. REINSTALL VSV FOR EVAP SYSTEM Install the VSV with the two bolts.
30. REINSTALL LH NO.3 TIMING BELT COVER (a) Install the three gaskets to the timing belt cover.
(b) Install the cord grommet to the high±tension cord.
(c) Install the cord grommet to the timing belt cover.
(d) Fit portion A of the timing belt cover, matching it with the
lower high±tension cord cover.
(e) Install the timing belt cover with the three bolts.
31. RECONNECT PCV HOSE TO LH CYLINDER HEAD
32. RECONNECT FUEL RETURN HOSE TO FUEL RETURN PIPE
33. RECONNECT FUEL INLET HOSE TO LH DELIVERY PIPE Connect the inlet hose with two new gaskets and the
pulsation damper.
SST 09612±24014 (09617±24011)
Torque: 39 N Vm (400 kgf Vcm, 29 ft Vlbf)
33 N Vm (340 kgf Vcm, 24 ft Vlbf) for SST
HINT: Use a torque wrench with a fulcrum length of 30 cm
(11.81 in.)
34. REINSTALL RH ENGINE WIRE COVER (a) Fit portions A and B of the engine wire cover, matchingthem with the lower high±tension cord cover and No.3
timing belt cover.
(b) Install the engine wire cover with the bolt.
±
ENGINE MECHANICAL Engine Tune±UpEM±25
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