Page 537 of 1807
P02321
CO08N-02
P10717
P10878
CO-10
- COOLINGWATER PUMP
1423 Author: Date:
1997 SUPRA (RM502U)
INSPECTION
1. INSPECT WATER PUMP
(a) Turn the pulley seat, and check that the water pump bear-
ing is not rough or noisy.
If necessary, replace the water pump.
(b) Visually check the air hole and drain hose for coolant leak-
age.
If leakage is found, replace the water pump.
2. INSPECT FLUID COUPLING
(a) Remove the 4 nuts and fan from the fluid coupling.
(b) Check that the fluid coupling is not damaged and that no
silicon oil leaks.
If necessary, replace the fluid coupling.
(c) Reinstall the fan to the fluid coupling with the 4 nuts.
Torque: 7.4 N´m (75 kgf´cm, 65 in.´lbf)
Page 538 of 1807

CO08O-01
P03945
New
O-Ring
P02574
New Gasket
S00913
A
B A
B
AB
BB
- COOLINGWATER PUMP
CO-1 1
1424 Author: Date:
1997 SUPRA (RM502U)
INSTALLATION
1. INSTALL WATER PUMP
(a) Install a new O-ring to the cylinder block.
(b) Install the drain hose.
(c) Install a new gasket to the water pump.
(d) Connect the water pump to the water bypass pipe. Do not
install the nut yet.
(e) Install the water pump with the 2 bolts (A) and 4 bolts (B).
Torque: 21 N´m (210 kgf´cm, 15 ft´lbf)
HINT:
Hand tighten the (A) bolts first.
(f) Install the 2 nuts holding the No.2 water bypass pipe to
the water pump.
Torque: 21 N´m (210 kgf´cm, 15 ft´lbf)
(g) 2JZ-GTE:
Connect the No.3 turbo water hose to the water pump.
(h) 2JZ-GE:
Install the connector bracket (for crankshaft position sen-
sor connector) with the bolt.
(i) 2JZ-GE:
Install the engine clamp bracket with the bolt.
(j) Install the generator with the bolt and nut.
Torque: 40 N´m (400 kgf´cm, 30 ft´lbf)
2. 2JZ-GE:
INSTALL NO.1 WATER BYPASS PIPE AND
WATER BYPASS OUTLET
(a) Install 2 new O-rings to the No.1 water bypass pipe.
(b) Install a new O-ring and the water bypass outlet with the
2 bolts.
Torque: 9.0 N´m (90 kgf´cm, 80 in.´lbf)
3. 2JZ-GTE:
INSTALL NO.1 WATER BYPASS PIPE AND
WATER OUTLET
(a) Install 2 new O-rings to the No.1 water bypass pipe.
(b) Apply soapy water to the O-rings.
(c) Install the No.1 water bypass pipe to the water pump.
Page 539 of 1807

P02583
Matchmarks CO-12
- COOLINGWATER PUMP
1425 Author: Date:
1997 SUPRA (RM502U)
(d) Install a new gasket and the water outlet with the 2 bolts.
Torque: 21 N´m (210 kgf´cm, 15 ft´lbf)
(e) Connect the ECT sensor and sender gauge connectors.
4. 2JZ-GTE:
CONNECT TURBO WATER HOSES TO WATER
OUTLET
5. INSTALL IDLER PULLEY AND TIMING BELT
(2JZ-GE: See page EM-19)
(2JZ-GTE: See page EM-21)
6. INSTALL WATER INLET AND LOWER RADIATOR
HOSE ASSEMBLY (See page CO-16)
7. INSTALL WATER PUMP PULLEY, FAN, FLUID
COUPLING ASSEMBLY AND DRIVE BELT
(a) Align the matchmarks, and install the water pump pulley,
the fan and fluid coupling assembly with the 4 nuts.
(b) Install the drive belt by turning the drive belt tensioner
clockwise.
(c) Stretch the belt tight, and tighten the 4 nuts.
Torque: 16 N´m (165 kgf´cm, 12 ft´lbf)
8. 2JZ-GTE M/T:
INSTALL DRIVE BELT TENSIONER DAMPER
9. INSTALL RADIATOR ASSEMBLY
(See page CO-28)
10. 2JZ-GE:
INSTALL AIR CLEANER, MAF METER AND INTAKE
AIR CONNECTOR PIPE ASSEMBLY
11. 2JZ-GTE:
INSTALL AIR CLEANER AND MAF METER
ASSEMBLY
12. 2JZ-GTE:
INSTALL NO.1 AIR HOSE
13. ROAD TEST
Check for abnormal noise, shock, slippage, correct shift points
and smooth operation.
Page 540 of 1807
CO08P-02
Z16933
2JZ-GE
Thermostat
Water Inlet
Gasket
Hose AssemblyLower radiator Water Inlet and
Engine Under Cover Gasket
Non reusable partThermostat 2JZ-GTE
x16
- COOLINGTHERMOSTAT
CO-13
1426 Author: Date:
1997 SUPRA (RM502U)
THERMOSTAT
COMPONENTS
Page 541 of 1807
CO08Q-01
Z16744
2JZ-GE
Z16763
2JZ-GTE CO-14
- COOLINGTHERMOSTAT
1427 Author: Date:
1997 SUPRA (RM502U)
REMOVAL
HINT:
Removal of the thermostat would have an adverse effect, caus-
ing a lowering of cooling efficiency. Do not remove the thermo-
stat, even if the engine tends to overheat.
1. 2JZ-GTE:
REMOVE ENGINE UNDER COVER
2. DRAIN ENGINE COOLANT
3. 2JZ-GE:
DISCONNECT WATER INLET FROM WATER PUMP,
AND REMOVE THERMOSTAT
(a) Remove the 2 nuts holding the water inlet to the water
pump, and disconnect the water inlet from the water
pump.
(b) Remove the thermostat.
(c) Remove the gasket from the thermostat.
4. 2JZ-GTE:
REMOVE WATER INLET, LOWER RADIATOR HOSE
ASSEMBLY AND THERMOSTAT
(a) Disconnect the lower radiator hose from the radiator.
(b) Remove the 2 nuts holding the water inlet to the water
pump, and disconnect the water inlet and lower radiator
hose from the water pump.
(c) Remove the thermostat.
(d) Remove the gasket from the thermostat.
Page 542 of 1807
CO08R-01
P 1111 6
CO0601
P03242
Valve
Lift
- COOLINGTHERMOSTAT
CO-15
1428 Author: Date:
1997 SUPRA (RM502U)
INSPECTION
INSPECT THERMOSTAT
HINT:
The thermostat is numbered with the valve opening tempera-
ture.
(a) Immerse the thermostat in water and gradually heat the
water.
(b) Check the valve opening temperature.
Valve opening temperature:
80 - 84°C (176 - 183°F)
If the valve opening temperature is not as specified, replace the
thermostat.
(c) Check the valve lift.
Valve lift: 8.5 mm (0.335 in.) or more at 95°C (203°F)
If the valve lift is not as specified, replace the thermostat.
(d) Check that the valve is closed when the thermostat is at
low temperatures (below 40°C (104°F)).
If not closed, replace the thermostat.
Page 543 of 1807
CO08S-01
P11770
Jiggle Valve
Protrusion 2JZ-GE
2JZ-GTE CO-16
- COOLINGTHERMOSTAT
1429 Author: Date:
1997 SUPRA (RM502U)
INSTALLATION
1. PLACE THERMOSTAT IN WATER INLET
(a) Install a new gasket to the thermostat.
(b) Align the jiggle valve of the thermostat with the protrusion
of the water inlet.
2. INSTALL WATER INLET
(a) Install the water inlet with the 2 nuts.
Torque:
2JZ-GE 8.8 N´m (90 kgf´cm, 78 in.´lbf)
2JZ-GTE 21 N´m (210 kgf´cm, 15 ft´lbf)
(b) 2JZ-GTE:
Connect the lower radiator hose to the radiator.
3. 2JZ-GTE:
INSTALL ENGINE UNDER COVER
4. FILL WITH ENGINE COOLANT
5. START ENGINE AND CHECK FOR COOLANT
LEAKS
Page 544 of 1807
CO08T-01
- COOLINGRADIATOR
CO-17
1430 Author: Date:
1997 SUPRA (RM502U)
RADIATOR
ON-VEHICLE CLEANING
Using water or a steam cleaner, remove any mud and dirt from the radiator core.
NOTICE:
If using a high pressure type cleaner, be careful not to deform the fins of the radiator core. (i. e. Main-
tain a distance between the cleaner nozzle and radiator core.)