radiator cap LEXUS GS400 2000 Service User Guide

CO09X±03
Z07402
Drain Plug
Drain Plug
B01611
Drain Plug
Rubber
HoseConnect
CO±2
± COOLING (2JZ±GE)COOLANT
1540 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
REPLACEMENT
1. DRAIN ENGINE COOLANT
(a) Remove the radiator cap.
CAUTION:
To avoid the danger of being burned, do not remove the ra-
diator cap while the engine and radiator are still hot, as fluid
and steam can be blown out under pressure.
(b) Loosen the 2 drain plugs (for the engine and radiator),
and drain the coolant.
HINT:
To prevent the coolant from spraying over the cylinder block,
connect the rubber hose (inside diameter 6 ± 8 mm) in the mar-
ket to the union pipe under the drain plug.
(c) Close the drain plugs.
Torque: 30 N´m (300 kgf´cm, 22 ft´lbf) for engine
2. FILL ENGINE COOLANT
(a) Slowly fill the system with coolant.

Use of improper coolants may damage engine cool-
ing system.

Use ºToyota Long Life Coolantº or equivalent and
mix it with plain water according to the manufac-
ture's directions.

Use of the coolant which includes more than 50%
[freezing protection down to ±35°C (±31°F)] or 60%
[freezing protection down to ±50°C (±58°F)] of eth-
ylene ±glycol is recommended, but not more than
70%.
NOTICE:

Do not use an alcohol type coolant or plain water
alone.

The coolant should be mixed with plain water (prefer-
able demineralized water or distilled water).
Capacity (w/ Heater):
7.7 liters (8.1 US qts, 6.8 lmp. qts)
(b) Install the radiator cap.
(c) Start the engine, and bleed the cooling system.
(d) Refill the reservoir with coolant until it reaches the ºFULLº
line.
3. CHECK ENGINE COOLANT FOR LEAKS
4. CHECK ENGINE COOLANT SPECIFIC GRAVITY COR-
RECTLY

B01860
SST
B01871
Tank
Lock
Plate
O±Ring
CO±22
± COOLING (2JZ±GE)RADIATOR
1560 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
(b) Install the drain plug.
8. INSTALL RADIATOR CAP
9. INSPECT FOR WATER LEAKS
(a) Tighten the drain plug.
(b) Plug the inlet pipes of the radiator with SST.
SST 09230±01010
(c) Using a radiator cap tester, apply pressure to the radiator.
Test pressure: 177 kPa (1.8 kgf/cm
2, 26 psi)
(d) Submerge the radiator in water.
(e) Inspect for leaks.
HINT:
On radiators with resin tanks, there is a clearance between the
tank and lock plate where a minute amount of air will remain,
giving the appearance of an air leak when the radiator is sub-
merged in water. Therefore, before doing the water leak test,
first swish the radiator around in the water until all air bubbles
disappear.
10. INSTALL NEW PACKINGS

EM0D6±04
A01482
A02663
5 mm Hexagon Wrench
A02649
A02690
SST
EM±16
± ENGINE MECHANICAL (2JZ±GE)TIMING BELT
1370 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
REMOVAL
1. REMOVE ENGINE UNDER COVER
2. DRAIN ENGINE COOLANT
3. REMOVE RADIATOR ASSEMBLY (See page CO±18)
4. REMOVE DRIVE BELT (See page CH±1)
5. REMOVE PS PUMP AND FRONT BRACKET
(a) Remove the 3 bolts, plate washer and pump front bracket.
(b) Disconnect the vane pump from the bracket.
6. REMOVE NO.3 TIMING BELT COVER
Using a 5 mm hexagon wrench, remove the 4 bolts, oil filler cap,
timing belt cover and gasket.
7. REMOVE NO.2 TIMING BELT COVER
Using a 5 mm hexagon wrench, remove the 3 bolts, timing belt
cover and gasket.
8. REMOVE DRIVE BELT TENSIONER
Remove the 3 bolts and tensioner.
NOTICE:
Be careful not to drop the bolts inside the timing belt cover.
9. LOOSEN CRANKSHAFT PULLEY BOLT
Using SST, loosen the pulley bolt.
SST 09213 ± 70010, 09330 ± 00021

A02803Plate Washer
A
B
A EM±28
± ENGINE MECHANICAL (2JZ±GE)TIMING BELT
1382 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
20. INSTALL NO.2 TIMING BELT COVER
(a) Install the gasket on the timing belt cover.
(b) Using a 5 mm hexagon wrench, install the timing belt cov-
er with the 3 bolts.
Torque: 8.0 N´m (80 kgf´cm, 71 in.´lbf)
21. INSTALL NO.3 TIMING BELT COVER
(a) Install the gasket on the timing belt cover.
(b) Using a 5 mm hexagon wrench, install the timing belt cov-
er with the 4 bolts.
Torque: 8.0 N´m (80 kgf´cm, 71 in.´lbf)
(c) Install the oil filler cap.
22. INSTALL PS PUMP AND FRONT BRACKET
(a) Temporarily install the vane pump to the bracket.
(b) Install the plate washer and front bracket with the 3 bolts.
Torque: 58 N´m (590 kgf´cm, 43 ft´lbf) for A bolts
52 N´m (530 kgf´cm, 38 ft´lbf) for B bolt
23. INSTALL DRIVE BELT (See page CH±1)
24. INSTALL RADIATOR ASSEMBLY (See page CO±23)
25. FILL ENGINE WITH COOLANT
26. START ENGINE CHECK FOR LEAKS
27. INSTALL ENGINE UNDER COVER
28. ROAD TEST
Check for abnormal noise, shock, slippage, correct shift points
and smooth operation.
29. RECHECK ENGINE COOLANT LEVEL

PP0TM±01
±
PP±15
67 Author: Date:
EQUIPMENT
HeaterThermostat, ECT switch
Radiator cap tester
Rubber hose (Inside diameter 6 ± 8 mm)
Soft ± faced hammer
ThermometerThermostat, ECT switch
Torque wrench
Vernier calipers

SS0FM±01
±
SS±13
169 Author: Date:
COOLING (2JZ±GE)
SERVICE DATA
ThermostatValve opening temperature
Valve lift at 95°C (203°F)80 ± 84°C (176 ± 183°F)
8.5 mm (0.335 in.) or more
Radiator capRelief valve opening pressure STD
Minimum93 ± 123 kPa (0.95 ± 1.25 kgf/cm2, 13.5 ± 17.8 psi)
78 kPa (0.8 kgf/cm2, 11.4 psi)
Electric
cooling fanRotating amperage at 20°C (68°F)8.5 ± 11.5 A