1991 LEXUS SC300 oil

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.
±
1UZ±FE ENGINE ENGINE MECHANICALEG±41
WhereEverybodyKnowsYourName

(c) Disconnect the following hoses:(1) 2 oil cooler hoses (for cooling fan) from pipes
(2) 2 radiator hoses
(3) 2 oil cooler hoses (for transmission) from radiator
HINT: Plug the hose ends.
(4) Suction hose from hydraulic pump
(5) Pressure hose from hydraulic pump
(d) Remove the 2 bolts, screw and upper radiator support. Remove the 2 upper radiator supports.
±
1UZ±FE ENGINE ENGINE MECHANICALEG±47
WhereEverybodyKnowsYourName

(e) Slightly lift the radiator, and disconnect the 2 oil cooler hoses(for cooling fan) from the hose clamp on the radiator fan
shroud.
(f) Remove the radiator assembly.
(g) Remove the 2 lower radiator supports from the radiator.
7. DISCONNECT AIR CONDITIONING (A/C) COMPRESSOR
FROM ENGINE
(a) Disconnect the A/C compressor connector.
(b) Remove the nut, and disconnect the ground cable from the
A/C compressor stay.
(c) Remove the bolt and A/C compressor stay.
(d) Remove the 2 bolts, and disconnect the A/C compressor from the engine.
HINT: Put aside the A/C compressor, and suspend it.
8. REMOVE INTAKE AIR CONNECTOR
(a) Disconnect the following hoses: (1) Air hose from IAC valve
(2) Air hose (from air control valve on PS pump) from intake
air connector
(b) Remove the bolt holding the intake air connector to the cylinder head cover.
(c) Loosen the 2 hose clamps.
(d) Disconnect the intake air connector from the throttle body
and air cleaner hose, and remove the intake air connector.
EG±48
±
1UZ±FE ENGINE ENGINE MECHANICAL
WhereEverybodyKnowsYourName

9. REMOVE LH IGNITION COIL
(a) Disconnect the following connectors and cord:(1) Ignition coil connector
(2) Noise filter connector
(3) High±tension cord
(b) Remove the 2 bolts and ignition coil.
10. REMOVE UPPER HIGH±TENSION CORD COVER
(a) Remove the 2 bolts.
(b) Disconnect the front side claw groove of the upper cord cover
from the claw of lower cord cover, and remove the upper cord
cover.
11. REMOVE RH ENGINE WIRE COVER Remove the bolt and engine wire cover.
12. REMOVE LH ENGINE WIRE COVER Remove the 2 bolts and engine wire cover.
±
1UZ±FE ENGINE ENGINE MECHANICALEG±49
WhereEverybodyKnowsYourName

20. REMOVE DISTRIBUTOR CAPSLoosen the 3 bolts, and remove the distributor cap.
Remove the 2 distributor caps.
HINT: Arrange the distributor caps (RH side and LH side).
21. REMOVE DISTRIBUTOR ROTORS Loosen the 2 bolts, and remove the distributor rotor.
Remove the 2 distributor rotors.
HINT: Arrange the distributor rotors (RH side and LH side).
22. REMOVE DISTRIBUTOR HOUSINGS
(a) RH Distributor Housing: Disconnect the camshaft position sensor connector.
(b) Remove the 3 bolts and distributor housing. Remove the 2 distributor housings.
23. REMOVE GENERATOR
(a) Disconnect the generator connector.
(b) Remove the cap and nut, and disconnect the generator wire.
(c) Remove the bolt, and disconnect the transmission oil cooler pipe bracket from the generator.
(d) Remove the nut and generator.
24. REMOVE DRIVE BELT TENSIONER Remove the bolt, 2 nuts and belt tensioner.
EG±52
±
1UZ±FE ENGINE ENGINE MECHANICAL
WhereEverybodyKnowsYourName

39. REMOVE CRANKSHAFT TIMING PULLEYUsing SST, remove the timing pulley.
SST 09213±60017 (09213±00050)
EG1KH±02
TIMING BELT COMPONENTS
INSPECTION
1. INSPECT TIMING BELT
NOTICE:
w Do not bend, twist or turn the timing belt inside out.
w Do not allow the timing belt to come into contact with oil,
water or steam.
w Do not utilize timing belt tension when installing or
removing the mounting bolt of the camshaft timing
pulley.
If there are any defects as shown in the illustration, check the
following points:
(a) Premature parting wCheck the proper installation.
w Check the timing cover gasket for damage and proper
installation.
(b) If the belt teeth are cracked or damaged, check to see if either
camshaft or water pump is locked.
(c) If there is noticeable wear or cracks on the belt face, check to see if there are nicks on the side of the idler pulley lock.
±
1UZ±FE ENGINE ENGINE MECHANICALEG±57
WhereEverybodyKnowsYourName

(d) If there is wear or damage on only one side of the belt, checkthe belt guide and the alignment of each pulley.
(e) If there is noticeable wear on the belt teeth, check the timing cover for damage, gasket has been installed correctly, and
the foreign material on the pulley teeth. If necessary, replace
the timing belt.
2. INSPECT IDLER PULLEYS Check that the idler pulley turns smoothly.
If necessary, replace the idler pulley.
3. INSPECT TIMING BELT TENSIONER
(a) Visually check tensioner for leakage. HINT: If there is only the faintest trace of oil on the seal on the
push rod side, the tensioner is all right.
If leakage is found, replace the tensioner.
(b) Hold the tensioner with both hands, and push the push rod firmly against floor or wall to check that it doesn't move.
If push rod moves, replace the tensioner.
EG±58
±
1UZ±FE ENGINE ENGINE MECHANICAL
WhereEverybodyKnowsYourName

(c) Measure the protrusion of the push rod from the housing end.
Protrusion:
10.5 ± 11.5 mm (0.413 ± 0.453 in.)
If the protrusion is not as specified, replace the tensioner.
EG21R±02
TIMING BELT INSTALLATION
See Components for Removal and Installation:
1. INSTALL CRANKSHAFT TIMING PULLEY
(a) Align the timing pulley set key with the key groove of thepulley.
(b) Using SST and a hammer, tap in the timing pulley, facing the flange side inward.
SST 09223±46011
2. INSTALL NO.1 IDLER PULLEY
(a) Apply adhesive 2 or 3 threads of the pivot bolt.
Adhesive: Part No. 08833±00080, THREE BOND 1344,
LOCTITE 242 or equivalent
(b) Using a 10 mm hexagon wrench, install the plate washer and
idler pulley with the pivot bolt.
Torque: 34 N Vm (350 kgf Vcm, 25 ft Vlbf)
(c) Check that the pulley bracket moves smoothly.
3. INSTALL NO.2 IDLER PULLEY
(a) Install the idler pulley with the bolt.
Torque: 34 N Vm (350 kgf Vcm, 25 ft Vlbf)
(b) Check that the idler pulley moves smoothly.
4. TEMPORARILY INSTALL TIMING BELT
NOTICE: The engine should be cold.
(a) Using the crankshaft pulley bolt, turn the crankshaft and align
the timing marks of the crankshaft timing pulley and oil pump
body.
±
1UZ±FE ENGINE ENGINE MECHANICALEG±59
WhereEverybodyKnowsYourName