Lexus GS300/400 (2000 year). Manual — part 119
CO0A9–03
B01881
CO–18
–
COOLING (2JZ–GE)
RADIATOR
1556
REMOVAL
1.
REMOVE ENGINE UNDER COVER
2.
DRAIN ENGINE COOLANT
3.
REMOVE AIR CLEANER INLET
4.
REMOVE AIR CLEANER AND MAF METER AS-
SEMBLY
5.
REMOVE RADIATOR AND ELECTRIC COOLING FAN
ASSEMBLY
(a)
Disconnect the upper radiator hose from the radiator.
(b)
Disconnect the lower radiator hose from the radiator.
(c)
Disconnect the ECM outlet duct from the ECM box.
(d)
Disconnect the wire for electric cooling fan from the clamp
on the electric cooling fan.
(e)
Disconnect the 2 electric cooling fan connectors.
(f)
Disconnect the ECT switch connector for electric cooling
fan.
(g)
Disconnect the 2 oil cooler hoses for A/T from the radiator.
(h)
Remove the 2 nuts and 2 upper radiator supports.
(i)
Lift out the radiator and cooling fan assembly.
(j)
Remove the 2 lower radiator supports.
6.
REMOVE ELECTRIC COOLING FAN FROM RADIA-
TOR
(a)
Disconnect the radiator reservoir hose from the radiator.
(b)
Remove the 6 bolts and electric cooling fan.
CO0AA–01
CO1205
Dimension B
Stopper Bolt
Overhaul Handle
Part A
Claw
SST
B01865
Lock
Plate
SST
Stopper Bolt
Tank
B01867
Tap
B02033
–
COOLING (2JZ–GE)
RADIATOR
CO–19
1557
DISASSEMBLY
1.
REMOVE PACKINGS
2.
REMOVE RADIATOR CAP
3.
REMOVE DRAIN PLUG
(a)
Remove the drain plug.
(b)
Remove the O–ring.
4.
REMOVE ECT SWITCH
(a)
Remove the ECT switch.
(b)
Remove the O–ring.
5.
ASSEMBLE SST
SST
09230–01010
(a)
Install the claw to the overhaul handle, inserting it in the
hole in part A as shown in the diagram.
(b)
While gripping the handle, adjust the stopper bolt so that
dimension B is as shown in the illustration.
Dimension B: 0.2 – 0.3 mm (0.008 – 0.012 in.)
NOTICE:
If this adjustment is not done the claw may be damaged.
6.
UNCAULK LOCK PLATES
Using SST to release the caulking, squeeze the handle until
stopped by the stopper bolt.
SST
09230–01010
7.
REMOVE TANKS AND O–RINGS
Lightly tap the bracket of the radiator (or radiator inlet or outlet)
with a soft–faced hammer, and remove the tank and the O–ring.
8.
REMOVE OIL COOLER FROM LOWER TANK
(a)
Loosen the nut, and remove the cooler pipe. Remove the
2 cooler pipes.
(b)
Remove the 2 nuts and 2 plate washers.
(c)
Remove the oil cooler and 2 O–rings.
CO09X–03
Z07402
Drain Plug
Drain Plug
B01611
Drain Plug
Rubber
Hose
Connect
CO–2
–
COOLING (2JZ–GE)
COOLANT
1540
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 ”Toyota Long Life Coolant” 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 ”FULL”
line.
3.
CHECK ENGINE COOLANT FOR LEAKS
4.
CHECK ENGINE COOLANT SPECIFIC GRAVITY COR-
RECTLY
CO0AB–03
B01862
75
°
Pipe
CO0317
O–Ring
Normal X Twisted
X Twisted
B01868
CORRECT
WRONG
Tap
Tank
Plate
Lock
CO1206
Dimension B
Punch Assembly
Overhaul Handle
Stopper Bolt
Part
SST
CO–20
–
COOLING (2JZ–GE)
RADIATOR
1558
REASSEMBLY
1.
INSTALL OIL COOLER TO LOWER TANK
(a)
Install 2 new O–rings to the oil cooler.
(b)
Install the oil cooler to the lower tank with the 2 plate
washers and 2 nuts.
Torque: 8.3 N·m (85 kgf·cm, 74 in.·lbf)
(c)
Install the cooler pipes in the direction indicated in the il-
lustration.
Torque: 14.7 N·m (150 kgf·cm, 11 ft·lbf)
2.
INSPECT LOCK PLATE FOR DAMAGE
HINT:
If the sides of the lock plate groove are deformed, reas-
sembly of the tank will be impossible.
Therefore, first correct any deformation with pliers or simi-
lar object. Water leakage will result if the bottom of the
lock plate groove is damaged or dented.
NOTICE:
The radiator can only be recaulked 2 times. After the 2nd
time, the radiator core must be replaced.
3.
INSTALL NEW O–RINGS AND TANKS
(a)
After checking that there are no foreign objects in the lock
plate groove, install a new O–ring without twisting it.
HINT:
When cleaning the lock plate groove, lightly rub it with sand pa-
per without scratching it.
(b)
Install the tank without damaging the O–ring.
(c)
Tap the lock plate with a soft–faced hammer so that there
is no gap between it and the tank.
4.
ASSEMBLE SST
SST
09230–01010, 09231–14010
(a)
Install the punch assembly to the overhaul handle, insert-
ing it in the hole in part A as shown in the illustration.
(b)
While gripping the handle, adjust the stopper bolt so that
dimension B is as shown in the illustration.
Dimension B: 8.4 mm (0.331 in.)
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