engine TOYOTA SEQUOIA 2001 Service Repair Manual

CO0IV±04
B05866
± COOLINGTHERMOSTAT
CO±11
2827 Author: Date:
2005 SEQUOIA (RM1146U)
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. DRAIN ENGINE COOLANT
2. DISCONNECT WATER INLET FROM WATER INLET
HOUSING
Remove the 3 nuts and disconnect the water inlet from the wa-
ter inlet housing.
3. REMOVE THERMOSTAT
(a) Remove the thermostat.
(b) Remove the gasket from the thermostat.

CO0IX±05
B07218
Jiggle Valve30°30°
± COOLINGTHERMOSTAT
CO±13
2829 Author: Date:
2005 SEQUOIA (RM1146U)
INSTALLATION
1. PLACE THERMOSTAT IN WATER INLET HOUSING
(a) Install a new gasket to the thermostat.
(b) Insert the thermostat into the water inlet housing with the
jiggle valve facing straight upward.
HINT:
The jiggle valve may be set within 30° of either side of the pre-
scribed position.
2. INSTALL WATER INLET
Install the water inlet with the 3 nuts.
Torque: 19 N´m (195 kgf´cm, 14 ft´lbf)
3. FILL WITH ENGINE COOLANT
4. START ENGINE AND CHECK FOR COOLANT LEAKS
5. RECHECK ENGINE COOLANT LEVEL

CO0IZ±08
CO1242
Radiator Cap Tester
Radiator Cap
30° or More
B07240
Radiator Cap Tester
± COOLINGRADIATOR
CO±15
2831 Author: Date:
2005 SEQUOIA (RM1146U)
ON±VEHICLE INSPECTION
1. REMOVE 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.
2. INSPECT RADIATOR CAP
NOTICE:

If the radiator cap has contaminations, always rinse
it with water.

Before using a radiator cap tester, wet the relief valve
and pressure valve with engine coolant or water.

When performing steps (a) and (b) below, keep the
tester at an angle of over 30° above the horizontal.
(a) Using a radiator cap tester, slowly pump the tester and
check that air is coming from the vacuum valve.
Pump speed: 1 push/(3 seconds or more)
NOTICE:
Push the pump at a constant speed.
If air is not coming from the vacuum valve, replace the radiator
cap.
(b) Pump the radiator cap tester, and measure the relief valve
opening pressure.
Pump speed: 1 push within 1 second
NOTICE:
This pump speed is for the first pump only (in order to close
the vacuum valve). After this, the pump speed can be re-
duced.
Opening pressure:
Standard74 to 103 kPa (0.75 to 1.05 kgf/cm2,10.7 to 14.9 psi)
Minimum59 kPa (0.6 kgf/cm2, 8.6 psi)
HINT:
Use the tester's maximum reading as the opening pressure.
If the opening pressure is less than minimum, replace the radia-
tor cap.
3. INSPECT COOLING SYSTEM FOR LEAKS
(a) Fill the radiator with coolant and attach a radiator cap tes-
ter.
(b) Warm up the engine.
(c) Pump it to 118 kPa (1.2 kgf/cm
2, 17.1 psi), and check that
the pressure does not drop.
If the pressure drops, check the hoses, radiator or water pump
for leaks. If no external leaks are found, check the heater core,
cylinder block and head.
4. REINSTALL RADIATOR CAP

CO1D2±01
B07246
Radiator Assembly
A/T Oil Cooler Hose
Engine Under Cover (4WD)Upper Radiator Hose
Lower Radiator Hose
x 5
N´m (kgf´cm, ft´lbf) : Specified torque
12 (120, 9)
No.1 Fan Shroud
No.2 Fan Shroud
Engine Under Cover (2WD)
Clip
Clip
CO±16
± COOLINGRADIATOR
2832 Author: Date:
2005 SEQUOIA (RM1146U)
COMPONENTS

CO0UV±03
B07219
± COOLINGRADIATOR
CO±17
2833 Author: Date:
2005 SEQUOIA (RM1146U)
REMOVAL
1. REMOVE ENGINE UNDER COVER
2. DRAIN ENGINE COOLANT
3. DISCONNECT RADIATOR RESERVOIR HOSE FROM
RADIATOR
4. DISCONNECT UPPER RADIATOR HOSE FROM RA-
DIATOR
5. DISCONNECT LOWER RADIATOR HOSE FROM RA-
DIATOR
6. DISCONNECT A/T OIL COOLER HOSES FROM RA-
DIATOR
7. REMOVE NO.2 FAN SHROUD
Remove the 2 clips and No.2 fan shroud.
8. REMOVE RADIATOR ASSEMBLY
Remove the 4 bolts and radiator assembly.
9. REMOVE NO.1 FAN SHROUD
Remove the 4 bolts and No.1 fan shroud.

CO0UY±03
B07220
CO±18
± COOLINGRADIATOR
2834 Author: Date:
2005 SEQUOIA (RM1146U)
INSTALLATION
1. INSTALL NO.1 FAN SHROUD
Install the No.1 fan shroud with the 4 bolts.
Torque: 5.0 N´m (50 kgf´cm, 44 in.´lbf)
2. INSTALL RADIATOR ASSEMBLY
(a) Set the radiator bracket hooks to the radiator support
holes.
(b) Install the 4 bolts.
Torque: 12 N´m (120 N´m, 9 ft´lbf)
3. INSTALL NO.2 FAN SHROUD
Install the No.2 fan shroud with the 2 clips.
4. CONNECT A/T OIL COOLER HOSES TO RADIATOR
5. CONNECT UPPER RADIATOR HOSE TO RADIATOR
6. CONNECT LOWER RADIATOR HOSE TO RADIATOR
7. CONNECT RADIATOR RESERVOIR HOSE TO RADIA-
TOR
8. FILL WITH ENGINE COOLANT
9. START ENGINE AND CHECK FOR ENGINE COOLANT
LEAKS
10. RECHECK ENGINE COOLANT LEVEL
11. INSTALL ENGINE UNDER COVER

B16233
Recommended Viscosity (SAE):
TEMPERATURE RANGE ANTICIPATED BEFORE NEXT OIL CHANGE5W±30°C °F
±20
±290
±1820
±740
460
1680
27100
38
LU0GV±05
B07230
Oil Pressure Gauge
Oil Pressure Switch
P08343
Adhesive
± LUBRICATIONOIL AND FILTER
LU±1
2835 Author: Date:
2005 SEQUOIA (RM1146U)
OIL AND FILTER
INSPECTION
1. CHECK ENGINE OIL QUALITY
Check the oil for deterioration, entry of water, discoloring or thin-
ning.
If the quality is visibly poor, replace the oil.
Oil grade:
API grade SL Energy±Conserving or ILSAC multi-
grade engine oil.
2. CHECK ENGINE OIL LEVEL
The oil level should be between the ºLº and ºFº marks on the dip-
stick.
If low, check for leakage and add oil up to the ºFº mark.
NOTICE:
Do not fill with engine oil above the ºFº mark.
3. REMOVE ENGINE UNDER COVER
4. REMOVE OIL PRESSURE SWITCH
5. INSTALL OIL PRESSURE GAUGE
6. WARM UP ENGINE
Allow the engine to warm up to normal operating temperature.
7. CHECK OIL PRESSURE
Oil pressure:
At idle29 kPa (0.3 kgf/cm2, 4.2 psi) or more
At 3,000 rpm294 ± 588 kPa (3.0 ± 6.0 kgf/cm2, 43 ± 85 psi)
8. REMOVE OIL PRESSURE GAUGE
9. REINSTALL OIL PRESSURE SWITCH
(a) Apply adhesive to 2 or 3 threads of the oil pressure switch.
Adhesive:
Part No. 08833±00080, THREE BOND 1344, LOCTITE
242 or equivalent
(b) Reinstall the oil pressure switch.
10. START ENGINE, AND CHECK FOR ENGINE OIL
LEAKS
11. REINSTALL ENGINE UNDER COVER

LU0GW±07
B07231
B07232
SST
LU±2
± LUBRICATIONOIL AND FILTER
2836 Author: Date:
2005 SEQUOIA (RM1146U)
REPLACEMENT
CAUTION:

Prolonged and repeated contact with mineral oil will
result in the removal of natural fats from the skin,
leading to dryness, irritation and dermatitis. In addi-
tion, used engine oil contains potentially harmful
contaminants which may cause skin cancer.

Care should be taken, therefore, when changing en-
gine oil to minimize the frequency and length of time
your skin is exposed to used engine oil. Protective
clothing and gloves that cannot be penetrated by oil
should be worn. The skin should be thoroughly
washed with soap and water, or use water±less hand
cleaner, to remove any used engine oil. Do not use
gasoline, thinners, or solvents.

In order to preserve the environment, used oil and
used oil filters must be disposed of only at desig-
nated disposal sites.
1. w/ Oil filter change:
REMOVE ENGINE UNDER COVER
2. DRAIN ENGINE OIL
(a) Remove the oil filler cap.
(b) Remove the oil drain plug and gasket, and drain the oil
into a container.
3. REPLACE OIL FILTER
(a) Using SST, remove the oil filter.
SST 09228±07501
(b) Clean the oil filter contact surface on the oil filter mount-
ing.
(c) Lubricate the filter rubber gasket with clean engine oil.

B07233
B07234
SST
3/4 Turn
B07235
Front
± LUBRICATIONOIL AND FILTER
LU±3
2837 Author: Date:
2005 SEQUOIA (RM1146U)
(d) Tighten the oil filter by hand until the rubber gasket con-
tacts the seat of the filter mounting.
(e) Using SST, give it an additional 3/4 turn to seat the filter.
SST 09228±07501
4. REFILL WITH ENGINE OIL
(a) Clean and install the oil drain plug with a new gasket.
Torque: 39 N´m (400 kgf´cm, 29 ft´lbf)
(b) Fill with fresh engine oil.
Capacity:
Drain and refill w/ Oil filter change
w/o Oil filter change6.2 liters (6.6 Us qts, 5.5 Imp. qts)
5.7 liters (6.0 Us qts, 5.0 Imp. qts)
Dry fill7.1 liters (7.5 Us qts, 6.2 Imp. qts)
(c) Reinstall the oil filler cap.
HINT:
Install the oil filler cap facing the direction as shown in the il-
lustration.
5. START ENGINE AND CHECK FOR ENGINE OIL
LEAKS
6. RECHECK ENGINE OIL LEVEL
7. w/ Oil filter change:
REINSTALL ENGINE UNDER COVER

LU08P±10
B17476
RH No.3 Timing Belt Cover
LH No.3 Timing Belt CoverNo.2 Timing Belt Cover
Camshaft Position
Sensor Connector
Engine Wire
Drive Belt Idler PulleyTiming Belt
Fan Bracket
N´m (kgf´cm, ft´lbf) : Specified torqueOil Cooler Pipe
Timing Belt Tensioner Dust Boot
Cover Plate
32 (330, 24)
Water Bypass
Hose
Grommet
245 (2,500, 181)
39 (400,29)
16 (160, 12)
16 (160, 12)
LU±4
± LUBRICATIONOIL PUMP
2838 Author: Date:
2005 SEQUOIA (RM1146U)
OIL PUMP
COMPONENTS