Page 568 of 1897
CO02K-03
- COOLINGCOOLANT
CO-1
1194 Author: Date:
2001 AVALON (RM808U)
COOLANT
INSPECTION
1. CHECK ENGINE COOLANT LEVEL AT RADIATOR RESERVOIR
The engine coolant level should be between the ºLOWº and ºFULLº lines, when the engine is cold.
If low, check for leaks and add ''Toyota Long Life Coolantº or Equivalent up to the ºFULLº line.
2. CHECK ENGINE COOLANT QUALITY
(a) Remove the radiator cap from the water outlet.
CAUTION:
To avoid the danger of being burned, do not remove the radiator cap while the engine and radiator
are still hot, as fluid and steam can be blown out under pressure.
(b) There should not be any excessive deposits of rust or scale around the radiator cap or water outlet
filler hole, and the coolant should be free from oil.
If excessively dirty, clean the coolant passages and replace the coolant.
(c) Reinstall the radiator cap.
Page 569 of 1897

CO02L-03
B09030Drain PlugDrain Plug
CO-2
- COOLINGCOOLANT
1195 Author: Date:
2001 AVALON (RM808U)
REPLACEMENT
1. DRAIN ENGINE COOLANT
(a) Remove the radiator cap from the water outlet.
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 radiator drain plug and engine drain plugs,
and drain the coolant.
(c) Close the drain plugs.
Torque:
RH engine drain plug on cylinder block side cover:
7 N´m (70 kgf´cm, 61 in.´lbf)
LH engine drain plug on union:
13 N´m (130 kgf´cm, 9 ft´lbf)
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 plan water according to the manufactur-
er's directions.
Using of 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-
ably demineralized water or distilled water).
Capacity: 9.0 liters (9.5 US qts, 7.9 lmp. qts)
(b) Install the radiator cap.
(c) Start the engine, and bleed the cooling system.
(d) If necessary, refill coolant into the reservoir up to the
ºFULLº line.
3. CHECK ENGINE COOLANT FOR LEAKS
4. CHECK ENGINE COOLANT SPECIFIC GRAVITY COR-
RECTLY
Page 592 of 1897
CO02M-03
A10834
RH Fender Apron Seal
Generator Drive Belt
Engine Moving
Control Rod
No.2 RH Engine
Mounting Bracket
Ground Strap
Connector PS Pump Drive Belt
Engine Coolant Reservoir Hose
: Specified torque
64 (650, 47)
32 (320, 23)
N´m (kgf´cm, ft´lbf)
- COOLINGWATER PUMP
CO-3
1196 Author: Date:
2001 AVALON (RM808U)
WATER PUMP
COMPONENTS
Page 1319 of 1897
Water Bypass Hose
A10522
PS Pressure Tube
Throttle Body Bracket
Engine WireThrottle Position
Sensor Connector
Vacuum Hose Brake Booster
39 (400,29)
IAC Valve
Connector
Accelerator Cable
Purge Hose
Hose Vacuum
Gasket
VSV Connector for No.2 ACIS
Engine Coolant
Reservoir Hose
43 (440,32)
ECT Sender
Gauge Connector
ECT Sensor
Connector
Grand Strap
Connector
15 (150,11)
Water Outlet
15 (150,11)
Water Bypass
Hose
Upper Radiator
HoseFuel Inlet Hose
Injector Connector Intake Manifold
Assembly
Retainer
Heater Hose
GasketIgnition Coil
Connector
Non-reusable part: Specified torque
N´m (kgf´cm, ft´lbf)
19.5 (200, 14)
No.1 Engine
Hanger
VSV Connector for
EVAP
Ground Cable
PCV Hose Ground Cable
Air Intake Chamber
Assembly
Gasket
Spark PlugIgnition Coil
Ground Strap
DLC1
Gasket
Fuel Hose Clamp
VSV Connector
for No.1 ACIS
Throttle Cable
- ENGINE MECHANICALCYLINDER HEAD
EM-27
1011 Author: Date:
2001 AVALON (RM808U)
Page 1343 of 1897

A05194
L = 133 mm (5.24 in.)
L = 180 mm (7.09 in.)L = 72 mm (2.83 in.)
L = 335 mm (13.19 in.)L = 180 mm
(7.09 in.)
L = Length Join
LineJoin
Line
Z14262New Gasket
- ENGINE MECHANICALCYLINDER HEAD
EM-67
1051 Author: Date:
2001 AVALON (RM808U)
Thoroughly clean all components to remove all the
loose material.
Remove the backing paper from a new gasket and
install the gasket evenly to the part of the timing belt
cover shaded black in the illustration.
NOTICE:
When joining 2 gaskets, do not leave a gap between them.
Cut off any excess gasket.
After installing the gasket, press down on it so that
the adhesive firmly sticks to the timing belt cover.
(b) Install the timing belt cover with the 6 bolts.
Torque: 8.5 N´m (85 kgf´cm, 74 in.´lbf)
(c) Install the 3 engine wire clamps to the timing belt cover.
20. INSTALL NO.2 IDLER PULLEY (See page EM-21)
21. INSTALL CAMSHAFT TIMING PULLEYS
(See page EM-21)
22. INSTALL TIMING BELT (See page EM-21)
23. INSTALL SPARK PLUGS
24. INSTALL IGNITION COILS
25. INSTALL WATER OUTLET
(a) Install 2 new gaskets.
(b) Connect the water outlet to the bypass hose.
(c) Install the water outlet with the 2 bolts, 2 nuts and 2 plate
washers. Alternately tighten the bolts and nuts.
Torque: 15 N´m (150 kgf´cm, 11 ft´lbf)
NOTICE:
Do not scratch the seal surface of the water outlet with the
stud bolt.
(d) Connect the ECT sender gauge connector.
(e) Connect the ECT sensor connector.
(f) Connect the ground strap connector.
(g) Connect the upper radiator hose.
(h) Connect the engine coolant reservoir hose.
Page 1351 of 1897

A07428
P20049Gasket
A05077
Clamp
Clamp
Clamp
A10531
- ENGINE MECHANICALCYLINDER HEAD
EM-33
1017 Author: Date:
2001 AVALON (RM808U)
(d) Remove the 9 bolts, 2 nuts, 2 plate washers, the intake
manifold, delivery pipes and injectors assembly.
NOTICE:
Be careful not to drop the injectors when removing
the delivery pipes.
Pay attention to put any hung load on the injector to
and from the side direction.
10. REMOVE WATER OUTLET
(a) Disconnect the ECT sender gauge connector.
(b) Disconnect the ECT sensor connector.
(c) Disconnect the ground strap connector.
(d) Disconnect the upper radiator hose.
(e) Disconnect the engine coolant reservoir hose.
(f) Remove the 2 bolts, 2 nuts and 2 plate washers.
(g) Disconnect the water bypass hose, and remove the water
outlet.
(h) Remove the 2 gaskets.
11. REMOVE IGNITION COILS
12. REMOVE SPARK PLUGS
13. REMOVE TIMING BELT (See page EM-15)
14. REMOVE CAMSHAFT TIMING PULLEYS
(See page EM-15)
15. REMOVE NO.2 IDLER PULLEY (See page EM-15)
16. REMOVE NO.3 TIMING BELT COVER
(a) Disconnect the 3 engine wire clamps from the timing belt
cover.
(b) Remove the 6 bolts and timing belt cover.
17. REMOVE CAMSHAFT POSITION SENSORS
18. REMOVE CAMSHAFT TIMING OIL CONTROL VALVES
19. DISCONNECT ENGINE WIRE PROTECTOR FROM
REAR SIDE
Remove the nut, and disconnect the engine wire protector from
the RH cylinder head.
Page 1367 of 1897

S04497
A07300
- ENGINE MECHANICALENGINE UNIT
EM-79
1063 Author: Date:
2001 AVALON (RM808U)
15. CONNECT ENGINE WIRE TO CABIN
(a) Push in the engine wire through the cowl panel. Install the
grommet.
(b) Connect the 5 engine ECM connectors.
(c) Install the glove compartment.
16. CONNECT CONNECTORS, CABLE, CLAMPS AND
HOSES
(a) Connect the noise filter connector on the LH fender
apron.
(b) Connect the generator connector and wire.
(c) Connect the starter connector and wire.
(d) Connect the 2 ground strap connectors to the RH fender
apron
(e) Connect the strap connector to the LH fender apron with
the bolt.
(f) Connect the ground cable to the battery body bracket.
(g) Connect the engine wire protector clamp to the battery
body bracket.
(h) Connect the engine wire clamp to the bracket on the RH
fender apron.
(i) Connect the brake booster vacuum hose to the throttle
body.
(j) Connect the engine coolant reservoir hose to the water
outlet.
(k) Connect the heater hose to the intake manifold.
(l) Connect the heater hose to the water inlet housing.
(m) Connect the fuel inlet hose to the fuel filter.
CAUTION:
Perform connecting operations of the fuel tube connector
(quick type) after observing the precautions.
(See page SF-1)
(n) Connect the EVAP hose assembly to the pipe on the
emission control valve set.
(o) Connect the 2 vacuum hoses to the vacuum tank for the
ACIS.
17. INSTALL FRONT EXHAUST PIPE
(a) Temporarily install 3 new gaskets and the front exhaust
pipe with the 2 bolts, 2 compression springs and 4 nuts.
(b) Tighten the 4 nuts holding the exhaust manifolds to the
front exhaust pipe.
Torque: 62 N´m (630 kgf´cm, 46 ft´lbf)
(c) Tighten the 2 bolts and 2 compression springs holding the
front exhaust pipe to the center exhaust pipe.
Torque: 43 N´m (440 kgf´cm, 32 ft´lbf)
Page 1369 of 1897

EM0ZL-02
A10518
5 mm
Hexagon
Wrench
A07300
EM-72
- ENGINE MECHANICALENGINE UNIT
1056 Author: Date:
2001 AVALON (RM808U)
REMOVAL
1. REMOVE BATTERY AND TRAY
2. REMOVE HOOD
3. REMOVE ENGINE FENDER APRON SEALS
4. DRAIN ENGINE COOLANT
5. DRAIN ENGINE OIL
6. REMOVE V-BANK COVER
(a) Using a 5 mm hexagon wrench, remove the 3 cap nuts.
(b) Loosen the V-bank cover fastener counterclockwise.
(c) Remove the V-bank cover.
7. DISCONNECT ACCELERATOR CABLE
8. REMOVE AIR CLEANER CAP ASSEMBLY AND AIR
CLEANER CASE
9. REMOVE CRUISE CONTROL ACTUATOR
10. REMOVE RADIATOR (See page CO-17)
11. REMOVE FRONT EXHAUST PIPE
(a) Remove the 2 bolts holding the support stay to the sup-
port bracket.
(b) Remove the 2 bolts and 2 compression springs holding
the front exhaust pipe to the center exhaust pipe.
(c) Remove the 4 nuts holding the front exhaust pipe to the
exhaust manifolds.
(d) Remove the front exhaust pipe and 3 gaskets.
12. DISCONNECT CONNECTORS, CABLE, CLAMPS AND
HOSES
(a) Remove the bolt and disconnect the ground strap from
the LH fender apron.
(b) Disconnect the 2 ground strap connectors from the RH
fender apron.
(c) Disconnect the ground cable from the A/T.
(d) Disconnect the engine wire protector clamp from the bat-
tery body bracket.
(e) Disconnect the engine wire clamp from the bracket on the
RH fender apron.
(f) Disconnect the brake booster vacuum hose from the
throttle body.
(g) Disconnect the engine coolant reservoir hose from the
water outlet.
(h) Disconnect the heater hose from the intake manifold.
(i) Disconnect the heater hose from the water inlet housing.