1991 LEXUS SC300 radiator

12. 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.
13. REMOVE RADIATOR ASSEMBLY
(a) Disconnect the ECT sensor connector (for cooling fan).
(b) Disconnect the ECT sensor wire clamp from the radiator fan shroud.
(c) Disconnect the following hoses: (1) 2 oil cooler hoses (for cooling fan) from pipes
(2) 2 radiator hoses
±
1UZ±FE ENGINE ENGINE MECHANICALEG±141
WhereEverybodyKnowsYourName

(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.
(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.
14. DISCONNECT IGNITER CONNECTORS
(a) Disconnect the 2 igniter connectors.
(b) Disconnect the wire clamp from the body.
EG±142
±
1UZ±FE ENGINE ENGINE MECHANICAL
WhereEverybodyKnowsYourName

20. INSTALL POWER STEERING (PS) SOLENOID VALVECONNECTOR
21. CONNECT ENGINE WIRE CONNECTORS
22. CONNECT THEFT DETERRENT HORN CONNECTOR
23. INSTALL GROUND CABLE TO BODY
24. CONNECT IGNITER CONNECTORS
(a) Connect the 2 igniter connectors HINT: Connect the yellow taped connector to the igniter on
the rear side.
(b) Install the wire clamp.
25. INSTALL RADIATOR ASSEMBLY
(a) Install the 2 lower radiator supports to the radiator.
(b) Place the radiator assembly on the body bracket.
(c) Slightly lift the radiator, and connect the 2 oil cooler hoses (for
cooling fan) to the hose clamp on the radiator fan shroud.
±
1UZ±FE ENGINE ENGINE MECHANICALEG±199
WhereEverybodyKnowsYourName

(d) Install the upper radiator support with the 2 bolts and screw.Install the 2 upper radiator supports.
Torque: 12 N Vm (120 kgf Vcm, 9 ft Vlbf)
(e) Connect the following hoses:
(1) 2 oil cooler hoses (for cooling fan) to pipes
(2) 2 radiator hoses
(3) 2 oil cooler hoses (for transmission) to radiator
(4) Suction hose to hydraulic pump
(5) Pressure hose to hydraulic pump
EG±200
±
1UZ±FE ENGINE ENGINE MECHANICAL
WhereEverybodyKnowsYourName

(f) Connect the ECT sensor connector (for cooling fan).
(g) Install the ECT sensor wire clamp to the radiator fan shroud.
26. INSTALL RADIATOR RESERVOIR TANK
(a) Install the reservoir tank to the reservoir tank bracket.
(b) Install the reservoir tank with the bracket and 3 bolts.
Torque: 4.9 N.m (50 kgfVcm, 43 in. Vlbf)
(c) Connect the following hoses:
(1) Reservoir hose to water inlet housing
(2) Reservoir hose to radiator
(d) Connect the coolant level sensor connector.
27. INSTALL INTAKE AIR CONNECTOR
(a) Connect the intake air connector to the throttle body.
(b) Install the hose clamp and bolt.
(c) Connect the following hoses to the intake air connector: (1) Air hose (from IAC valve)
(2) Air hose (from air control valve on PS pump)
28. CONNECT VACUUM HOSE (A) (FROM PS AIR CONTROL VALVE) TO AIR INTAKE CHAMBER
±
1UZ±FE ENGINE ENGINE MECHANICALEG±201
WhereEverybodyKnowsYourName

12. REMOVE RADIATOR RESERVOIR TANK(a) Disconnect the coolant level sensor connector.
(b) Disconnect the following hoses:(1) Reservoir hose to water inlet housing
(2) Reservoir hose to radiator
(c) Remove the two bolts and reservoir tank bracket.
(d) Disconnect the reservoir tank from the reservoir tank bracket, and remove the reservoir tank.
13. REMOVE RADIATOR (a) Disconnect the water temperature sensor connector.
(b) Disc onnect the wire clamp (for water temperature
sensor) from the radiator fan shrould.
(c) Disconnect the following hoses: (1) Two oil cooler hoses (for cooling fan) from pipes
(2) Two radiator hoses
EM±120
±
ENGINE MECHANICAL Cylinder Block
WhereEverybodyKnowsYourName

(3) Two oil cooler hoses (for A/T) from radiator Plug thehose ends.
(4) Suction hose from hydraulic pump
(5) Pressure hose from hydraulic pump
(c) Re mo ve th e two bo lts, scre w an d u pper radiator
support. Remove the two upper radiator supports.
(d) Slightly lift the radiator, and d isconnect the two oil cooler
hoses (for cooling fan) from the hose clamp on the
radiator fan shrould.
(e) Remove the radiator.
14. DISCONNECT IGNITER CONNECTORS (a) Disconnect the two igniter connectors.
(b) Disconnect the wire clamp from the body.
±
ENGINE MECHANICAL Cylinder BlockEM±121
WhereEverybodyKnowsYourName

24. CONNECT IGNITER CONNECTOR(a) Connect the two igniter connectors.
(b) Install the wire clamp.
25. INSTALL RADIATOR (a) Install the two lower radiator supports to the radiator.
(b) Place the radiator on the body bracket.
(c) Slightly lift the radiator, and connect the two cooler hose(for cooling fan) to the hose clamp on the radiator fan
shrould.
(d) Install the upper radiator support with the two bolts and screw. Install the two upper radiator supports.
(e) Connect the following hoses: (1) Pressure hose to hydraulic pump
(2) Suction hose to hydraulic pump
EM±174
±
ENGINE MECHANICAL Cylinder Block
WhereEverybodyKnowsYourName