engine coolant LEXUS SC400 1991 Service Service Manual

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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39. 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 NVm (50 kgf Vcm, 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.
40. INSTALL DRIVE BELT Install the drive belt by turning the drive belt tensioner coun-
terclockwise.
HINT: The pulley bolt for the dive belt tensioner has a left
hand thread.
41. INSTALL BATTERY
42. FILL WITH ENGINE COOLANT
43. START ENGINE AND CHECK FOR LEAKS
44. CHECK TRANSMISSION FLUID LEVEL
45. INSTALL ENGINE UNDER COVER
EG±72
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45. INSTALL LH CAMSHAFT TIMING PULLEY
(a) Align the camshaft knock pin with the knock pin groove of the
timing pulley, and slide on the timing pulley.
(b) Slide the timing pulley on the camshaft, facing the ªLº mark forward.
(c) Using SST, install the pulley bolt. SST 09278±54012
Torque: 108 N Vm (1,100 kgf Vcm, 80 ft Vlbf)
46. C O N N E C T T I M I N G B E LT TO C A M S H A F T T I M I N G
PULLEYS
(See steps 10 to 40 on pages EG±61 to 72)
47. CONNECT NEGATIVE TERMINAL CABLE TO BATTERY
48. FILL WITH ENGINE COOLANT
49. START ENGINE AND CHECK FOR LEAKS
50. CHECK TRANSMISSION FLUID LEVEL
51. PERFORM ENGINE ADJUSTMENT (See Tune±Up on pages EG±9 to 34)
52. PERFORM ROAD TEST Check for abnormal noise, shock, slipage, correct shift points
and smooth operation.
53. INSTALL ENGINE UNDER COVER
EG±136
±
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ENGINE REMOVAL
EG24W±02
(See Components for Engine Removal and Installation)
1. REMOVE BATTERYCAUTION: 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 HOOD
3. REMOVE ENGINE UNDER COVER
4. DRAIN ENGINE COOLANT
5. DRAIN ENGINE OIL
6. 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.
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1UZ±FE ENGINE ENGINE MECHANICALEG±139
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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
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(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
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1UZ±FE ENGINE ENGINE MECHANICALEG±201
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34. FILL WITH ENGINE COOLANT
35. FILL WITH ENGINE OIL
36. START ENGINE AND CHECK FOR LEAKS
37. CHECK TRANSMISSION FLUID LEVEL
38. PERFORM ENGINE ADJUSTMENT(See Tune±Up on pages EG±9 to 34)
39. INSTALL ENGINE UNDER COVER
40. INSTALL HOOD
41. PERFORM ROAD TEST Check for abnormal noise, shock slippage, correct shift
points and smooth operation.
42. RECHECK ENGINE COOLANT AND OIL LEVELS
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1UZ±FE ENGINE ENGINE MECHANICALEG±203
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COMPONENTS FOR REMOVAL AND
INSTALLATION OF ENGINE WITH
TRANSMISSION (Cont'd)
REMOVAL OF ENGINE WITH
TRANSMISSION
1. REMOVE BATTERYCAUTION: Work must be started after approx. 20 se-
conds or longer from the time the ignition switch is
turned to the ºLOCKº position and the negative (±) termi-
nal cable is disconnected from the battery.
2. REMOVE ENGINE UNDER COVER
3. DRAIN ENGINE COOLANT (See page CO±6)
4. DRAIN ENGINE OIL
5. REMOVE HOOD
6. 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 belt tensioner has a left±hand
thread.
EM±118
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ENGINE MECHANICAL Cylinder Block
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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
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ENGINE MECHANICAL Cylinder Block
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(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 mounting bolt.
(c) Connect the following hoses:(1) Air hose to ISC valve
(2) Air hose (from PS air control valve) to air intake chamber
28. CONNECT VACUUM HOSE (A) (FROM PS AIR CONTROL VALVE) TO AIR INTAKE CHAMBER
29. INSTALL AIR CLEANER AND AIR FLOW METER (a) Connect the air cleaner case to the air duct.
(b) Connect the air cleaner hose to the intake air connector.
(c) Install the four mounting bolts and hose clamp.
(d) Connect the air flow meter connector.
30. CONNECT CONTROL CABLES TO THROTTLE BODY Connect the following cables:(1) Accelerator cable
(2) A/T throttle cable
(3) (w/ Cruise Control System)
Cruise control actuator cable
EM±176
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ENGINE MECHANICAL Cylinder Block
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