1991 LEXUS SC300 timing belt

(h) Disconnect the 2 engine wire connectors.
(i) Remove the 8 bolts, seal washers, cylinder head cover andgasket.
19. SET NO.1 CYLINDER TO TDC/COMPRESSION
(a) Turn the crankshaft pulley, and align its groove with timing mark ª0º of the No.1 timing belt cover.
(b) Check that the timing marks of the camshaft timing pulleys and timing belt rear plates aligned.
If not, turn the crankshaft 1 revolution (360 5) and align the
mark as above.
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(e) Connect the following connectors:(1) Throttle position sensor connector
(2) w/ TRAC:Sub±throttle position sensor connector
(3) w/ TRAC: Sub±throttle actuator connector
27. REINSTALL HEATER WATER VALVE
(a) Install the water valve and bracket assembly with the 2 bolts.
(b) Install the engine wire clamp with the bolt.
(c) Connect the VSV connector.
28. REINSTALL RH NO.3 TIMING BELT COVER
(a) Install the 3 gaskets to the timing belt cover.
(b) Fit the portion A of the timing belt cover, matching it with the lower high±tension cord cover.
(c) Install the timing belt cover with the 3 bolts.
29. REINSTALL VSV FOR EVAP SYSTEM Install the VSV with the 2 bolts.
30. REINSTALL LH NO.3 TIMING BELT COVER
(a) Install the 3 gaskets to the timing belt cover.
(b) Install the cord grommet to the high±tension cord (from the LH ignition coil).
(c) Install the cord grommet to the timing belt cover.
(d) Fit the portion A of the timing belt cover, matching it with the lower high±tension cord cover.
(e) Install the timing belt cover with the 4 bolts.
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31. RECONNECT FUEL INLET HOSE TO LH DELIVERY PIPE
(a) Temporarily connect the fuel inlet hose to the delivery pipewith 2 new gaskets and pulsation damper.
(b) Using SST, tighten the pulsation damper.
SST 09631±22020
Torque:
39 NVm (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.).
32. RECONNECT FUEL RETURN HOSE TO FUEL RETURN PIPE
33. RECONNECT PCV HOSE TO LH CYLINDER HEAD
34. REINSTALL RH ENGINE WIRE COVER
(a) Fit portions A and B of the engine wire cover, matching them with the lower high±tension cord cover and No.3 timing belt
cover.
(b) Install the timing belt cover with the bolt.
35. REINSTALL LH ENGINE WIRE COVER
(a) Connect portions A and B of the engine wire cover to the wire
brackets.
(b) Set the VSV (for the fuel pressure) wire in original position.
(c) Fit portions C and D of the engine wire cover, matching them with the lower high±tension cord cover and No.3 timing belt
cover.
(d) Install the timing belt cover with the 2 bolts.
36. REINSTALL UPPER HIGH±TENSION CORD COVER
(a) Fit portion A of the upper high±tension cord cover matching the top of the lower high±tension cord cover.
EG±30
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5. REMOVE RH ENGINE WIRE COVERRemove the bolt and engine wire cover.
6. REMOVE LH ENGINE WIRE COVER Remove the 2 bolts and engine wire cover.
7. REMOVE VSV FOR EVAP SYSTEM Remove the 2 bolts, and disconnect the VSV from the cylin-
der head cover and timing belt cover.
8. REMOVE RH NO.3 TIMING BELT COVER Remove the 3 bolts, timing belt cover and 3 gaskets.
9. REMOVE LH NO.3 TIMING BELT COVER
(a) Remove the 4 bolts
(b) Disconnect the cord grommet from the timing belt cover, and remove the timing belt cover and 3 gaskets.
(c) Remove the cord grommet from the high±tension cord.
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19. RECONNECT LH CAMSHAFT POSITION SENSORCONNECTOR
20. RECONNECT COLD START INJECTOR CONNECTOR
21. REINSTALL RH NO.3 TIMING BELT COVER
(a) Install the 3 gaskets to the timing belt cover.
(b) Fit the portion A of the timing belt cover, matching it with the lower high±tension cord cover.
(c) Install the timing belt cover with the 3 bolts.
22. REINSTALL VSV FOR EVAP SYSTEM Install the VSV with the 2 bolts.
23. REINSTALL LH NO.3 TIMING BELT COVER
(a) Install the 3 gaskets to the timing belt cover.
(b) Install the cord grommet to the high±tension cord (from the LH ignition coil).
(c) Install the cord grommet to the timing belt cover.
(d) Fit the portion A of the timing belt cover, matching it with the lower high±tension cord cover.
(e) Install the timing belt cover with the 4 bolts.
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24. REINSTALL RH ENGINE WIRE COVER
(a) Fit portions A and B of the engine wire cover, matching themwith the lower high±tension cord cover and No.3 timing belt
cover.
(b) Install the timing belt cover with the bolt.
25. REINSTALL LH ENGINE WIRE COVER
(a) Connect portions A and B of the engine wire cover to the wire
brackets.
(b) Set the VSV (for the fuel pressure) wire in original position.
(c) Fit portions C and D of the engine wire cover, matching them with the lower high±tension cord cover and No.3 timing belt
cover.
(d) Install the timing belt cover with the 2 bolts.
26. REINSTALL UPPER HIGH±TENSION CORD COVER
(a) Fit portion A of the upper high±tension cord cover matching the top of the lower high±tension cord cover.
(b) Push the front side of the upper high±tension cord cover, and
fit the front side claw groove of the upper high±tension cord
cover to the claw of the lower high ±tension cord cover.
(c) Install the upper high±tension cord cover with the 2 bolts.
27. REINSTALL INTAKE AIR CONNECTOR
(a) Connect the end portions of the intake air connector to the throttle body and air cleaner hose.
(b) Tighten the 2 hose clamps.
(c) Install the bolt holding the intake air connector to the cylinder head cover.
EG±42
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TIMING BELT
EG21Q±01
COMPONENTS FOR REMOVAL AND
INSTALLATION
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EG21P±02
TIMING BELT REMOVAL
(See Components for Removal and Installation)
1. REMOVE BATTERY CAUTION: Work must be started after 90 seconds from
the time the ignition switch is turned to the ªLOCKº posi-
tion and the negative (±) terminal cable is disconnected
from the battery.
2. REMOVE ENGINE UNDER COVER
3. DRAIN ENGINE COOLANT
4. REMOVE DRIVE BELT
Loosen the drive belt tension by turning the drive belt tension-
er counterclockwise, and remove the drive belt.
HINT: The pulley bolt for the drive belt tensioner has a left±
hand thread.
5. REMOVE RADIATOR RESERVOIR TANK
(a) Disconnect the coolant level sensor connector.
(b) Disconnect the following hoses: (1) Reservoir hose from water inlet housing
(2) Reservoir hose from radiator
(c) Remove the 2 bolts and reservoir tank bracket.
(d) Remove the bolt holding the reservoir tank to the radiator.
(e) Disconnect the reservoir tank from the reservoir tank bracket,
and remove the reservoir tank.
6. REMOVE RADIATOR ASSEMBLY
(a) Disconnect the ECT sensor connector (for cooling fan).
(b) Disconnect the ECT sensor wire clamp from the radiator fan shroud.
EG±46
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