radiator TOYOTA SIENNA 2007 Service Owner's Manual

2GR-FE COOLING – RADIATORCO–29
CO
REMOVAL
1. REMOVE V-BANK COVER SUB-ASSEMBLY (See
page EM-28)
2. REMOVE NO. 1 ENGINE UNDER COVER (See page
EM-26)
3. DRAIN ENGINE COOLANT (See page CO-6)
4. REMOVE NO. 2 AIR CLEANER INLET (See page EM-
28)
5. REMOVE BATTERY (See page EM-26)
6. REMOVE FRONT BUMPER ASSEMBLY (See page
ET-3)
7. REMOVE FRONT BUMPER ENERGY ABSORBER
8. REMOVE NO. 1 AIR CLEANER INLET (See page EM-
28)
9. DISCONNECT RADIATOR RESERVE TANK HOSE OR
PIPE
(a) Disconnect the radiator reserve tank hose or pipe
from the radiator.
10. DISCONNECT NO. 1 RADIATOR HOSE
(a) Disconnect both connections of the No. 1 radiator
hose from the radiator.
A161455
A162804E01

CO–302GR-FE COOLING – RADIATOR
CO
11. DISCONNECT NO. 2 RADIATOR HOSE
(a) Disconnect the No. 2 radiator hose from the
radiator.
12. REMOVE HOOD LOCK RELEASE LEVER
PROTECTOR
(a) Disengage the 4 claws and remove the hood lock
release lever protector.
13. REMOVE HOOD LOCK ASSEMBLY
(a) With Hood Courtesy Switch:
(1) Disconnect the connector.
(b) Remove the 3 bolts.
(c) Disconnect the cable and remove the hood lock
assembly.
14. REMOVE HOOD LOCK SUPPORT SUB-ASSEMBLY
(a) Disconnect the ambient temperature sensor
connector.
A161461
A161456
A161457
A162807
A161459

2GR-FE COOLING – RADIATORCO–31
CO
(b) Detach the clamp.
(c) Disconnect the low pitched horn and high pitched
horn connectors.
(d) Remove the 2 bolts and hood lock support sub-
assembly.
15. DISCONNECT COOLING FAN ECU CONNECTOR
(a) Disconnect the cooling fan ECU connector.
(b) Detach the clamp.
16. REMOVE RADIATOR UPPER SUPPORT SUB-
ASSEMBLY
(a) Remove the 4 bolts and radiator upper support sub-
assembly.
A161458E01
A161460
A161472E01
A161463

CO–322GR-FE COOLING – RADIATOR
CO
17. DISCONNECT NO. 2 OIL COOLER OUTLET TUBE
SUB-ASSEMBLY
(a) Disconnect the No. 1 oil cooler inlet and No. 1 oil
cooler outlet hoses from the No. 2 oil cooler outlet
tube sub-assembly.
(b) Disconnect the No. 1 transmission oil cooler hoses
from the radiator.
(c) Remove the 2 bolts and No. 2 oil cooler outlet tube
sub-assembly.
18. REMOVE HEADLIGHT ASSEMBLY RH
(a) Use the same procedures for the RH side and LH
side.
HINT:
See page LI-69
19. REMOVE RADIATOR SIDE DEFLECTOR RH
(a) Disengage the 3 claws and remove the radiator side
deflector RH.
A161467E02
A161464

2GR-FE COOLING – RADIATORCO–33
CO
20. REMOVE HEADLIGHT BRACKET RH
(a) Remove the 3 nuts and headlight bracket RH.
21. REMOVE PRESSURE FEED TUBE ASSEMBLY
(a) Remove the 2 bolts.
22. REMOVE RADIATOR SUPPORT CUSHION
(a) Remove the 2 radiator support cushions from the
No. 1 radiator support.
23. REMOVE NO.1 RADIATOR SUPPORT
(a) Detach the clamp.
(b) Remove the 6 bolts and No. 1 radiator support.
A161465
A161466
A162805
A161469E01

CO–342GR-FE COOLING – RADIATOR
CO
24. REMOVE RADIATOR ASSEMBLY WITH FAN
SHROUD AND FAN MOTOR
(a) Remove the 2 bolts and separate the condenser
assembly from the radiator assembly with fan
shroud and fan motor.
(b) Remove the radiator assembly with fan shroud and
fan motor from the body.
25. REMOVE FAN SHROUD WITH FAN MOTOR
(a) Remove the 2 bolts and fan shroud with fan motor
from the radiator.
26. REMOVE RADIATOR SUPPORT LOWER
(a) Remove the 2 radiator support lowers from the
radiator assembly.
27. REMOVE NO. 2 RADIATOR SUPPORT
(a) Remove the 2 bolts and No. 2 radiator support from
the radiator.
A161470
A161471
A161474
A162806
A161475

2GR-FE COOLING – RADIATORCO–35
CO
28. DISCONNECT INLET SUB-ASSEMBLY
(a) Disconnect the inlet hose from the radiator.
(b) Remove the bolt and inlet sub-assembly from the
radiator.
DISASSEMBLY
1. REMOVE RADIATOR WATER INLET
(a) Remove the 2 bolts and radiator water inlet.
2. REMOVE DRAIN PLUG
(a) Remove the drain plug and air drain plug.
(b) Remove the 2 O-rings.
3. REMOVE LOWER RADIATOR TANK
(a) Install the claw to the overhaul handle, inserting it in
the hole in Part A as shown in the illustration.
SST 09230-01010 (09231-01010, 09231-01030)
(b) While squeezing the handle, adjust the stopper bolt
so that dimension B is as specified below.
Dimension B:
0.2 to 0.3 mm (0.008 to 0.012 in.)
NOTICE:
If the stopper bolt is not adjusted, the claw may
be damaged.
A161476
A161477
A113337E02

CO–362GR-FE COOLING – RADIATOR
CO
(c) Using SST, uncrimp the lock plate by squeezing the
handle until stopped by the stopper bolt.
SST 09230-01010
(d) Lightly tap the bracket of the radiator (or radiator
hose inlet or outlet) with a soft-faced hammer and
remove the tank.
(e) Remove the O-ring.
4. REMOVE UPPER RADIATOR TANK
HINT:
The removal procedure for the upper radiator tank is the
same as that for the lower radiator tank.
INSPECTION
1. INSPECT LOCK PLATE FOR DAMAGE
(a) Inspect the lock plate for damage.
HINT:
• Reassembly of a deformed tank will be
impossible. Therefore, first correct the shape of
the lock plate groove with pliers or a similar tool,
if necessary.
• Water leakage will result if the bottom of the lock
plate groove is damaged or dented. Repair or
replace the locking plate if necessary.
NOTICE:
The radiator can only be crimped 3 times. After
recrimping 2 times, the radiator core must be
replaced.
A162775E01
A162776
A132665E01

CO–62GR-FE COOLING – COOLANT
CO
COOLANT
REPLACEMENT
1. REMOVE NO. 1 ENGINE UNDER COVER (See page
EM-26)
2. REMOVE V-BANK COVER SUB-ASSEMBLY (See
page EM-28)
3. DRAIN ENGINE COOLANT
(a) Loosen the radiator drain cock plug.
HINT:
Collect the coolant in a container and dispose of it
according to the regulations in your area.
(b) Remove the radiator cap sub-assembly from the
radiator assembly.
NOTICE:
Do not remove the radiator cap sub-assembly
while the engine and radiator are still hot.
Pressurized, hot engine coolant and steam may
be released and cause serious burns.
(c) Loosen the 2 cylinder block drain cock plugs.
A161473E01

2GR-FE COOLING – COOLANTCO–7
CO
4. ADD ENGINE COOLANT
(a) Tighten the radiator drain cock plug by hand.
(b) Tighten the 2 cylinder block drain cock plugs.
Torque: 13 N*m (130 kgf*cm, 9 ft.*lbf) for
cylinder block drain cock plugs
(c) Remove the air drain cock plug from the water inlet
housing.
(d) Loosen the air drain plug at the top of the radiator 3
or 4 turns.
(e) Add TOYOTA Super Long Life Coolant (SLLC) to
the radiator inlet opening until coolant overflows
from the engine air drain cock hole. Then install the
air drain cock plug to the water inlet housing.
Torque: 13 N*m (130 kgf*cm, 9 ft.*lbf) for air
drain cock plug
(f) Continue to add TOYOTA Super Long Life Coolant
(SLLC) to the radiator inlet opening until coolant
overflows from the radiator air drain hole. Then
close the air drain plug at the top of the radiator.
HINT:
If the coolant level at the radiator inlet opening
drops after squeezing the No. 1 and No. 2 radiator
hoses, add coolant.
(g) Slowly fill the radiator with TOYOTA Super Long Life
Coolant (SLLC).
Standard capacity:
11.3 liters (12.0 US qts, 10.0 Imp. qts)
HINT:
• TOYOTA vehicles are filled with TOYOTA SLLC
at the factory. In order to avoid damage to the
engine cooling system and other technical
problems, only use TOYOTA SLLC or similar
high quality ethylene glycol based non-silicate,
non-amine, non-nitrite, non-borate coolant with
long-life hybrid organic acid technology (coolant
with long-life hybrid organic acid technology
consists of a combination of low phosphates and
organic acids).
• Contact your TOYOTA dealer for further details.
NOTICE:
Never use water as a substitute for engine
coolant.
(h) Slowly pour coolant into the radiator reservoir tank
until it reaches the FULL line.
(i) Squeeze the No. 1 and No. 2 radiator hoses several
times by hand, and then check the level of the
coolant.
If the coolant level is low, add coolant.
A162799E01