camshaft TOYOTA AVALON 2001 Service Owner's Guide
[x] Cancel search | Manufacturer: TOYOTA, Model Year: 2001, Model line: AVALON, Model: TOYOTA AVALON 2001Pages: 1897, PDF Size: 26.61 MB
Page 1353 of 1897
A07281
Manifold
Stay
A07283
O-Ring
A05193
A05280Align Intake
- ENGINE MECHANICALCYLINDER HEAD
EM-35
1019 Author: Date:
2001 AVALON (RM808U)
26. REMOVE LH EXHAUST MANIFOLD
(a) Disconnect the A/F sensor connector.
(b) Remove the bolt, nut and exhaust manifold stay.
(c) Remove the 6 nuts, exhaust manifold and gasket.
27. REMOVE OIL DIPSTICK AND GUIDE
(a) Remove the bolt holding the dipstick guide to the LH cylin-
der head.
(b) Pull out the dipstick guide together with the dipstick from
the No.1 oil pan.
(c) Remove the O-ring from the dipstick guide.
28. REMOVE CYLINDER HEAD COVERS
Remove the 9 bolts, cylinder head cover and gasket. Remove
the 2 cylinder head covers.
29. REMOVE CAMSHAFTS OF RH CYLINDER HEAD
NOTICE:
Since the thrust clearance of the camshaft is small, the
camshaft must be kept leveled while it is being installed. If
the camshaft is not kept leveled, the portion of the cylinder
head receiving the shaft thrust may crack or be damaged,
causing the camshaft to seize or break. To avoid this, the
following steps should be carried out.
(a) Remove the intake camshaft.
(1) Align the timing marks (2 dot marks) of the camshaft
drive and driven gears by turning the camshaft with
a wrench.
Page 1354 of 1897
A05195
IntakeMain Gear
Sub-Gear
Service Bolt
A05207
Intake
7
8
5
6
3
41 2
9
10
A05197
7
85
6
3
41
2
9
10 Exhaust EM-36
- ENGINE MECHANICALCYLINDER HEAD
1020 Author: Date:
2001 AVALON (RM808U)
(2) Secure the exhaust camshaft sub-gear to the main
gear with a service bolt.
Recommended service bolt:
Thread diameter6 mm
Thread pitch1.0 mm
Bolt length16 - 20 mm (0.63 - 0.79 in.)
HINT:
When removing the camshaft, mark certain that the torsional
spring force of the sub-gear has been eliminated by the above
operation.
(3) Uniformly loosen and remove the 10 bearing cap
bolts in several passes and in the sequence shown.
(4) Remove the 5 bearing caps and intake camshaft.
(b) Remove the exhaust camshaft.
(1) Uniformly loosen and remove the 10 bearing cap
bolts in several passes and in the sequence shown.
(2) Remove the 5 bearing caps, oil seal and exhaust
camshaft.
30. REMOVE CAMSHAFTS OF LH CYLINDER HEAD
NOTICE:
Since the thrust clearance of the camshaft is small, the
camshaft must be kept leveled while it is being installed. If
the camshaft is not kept leveled, the portion of the cylinder
head receiving the shaft thrust may crack or be damaged,
causing the camshaft to seize or break. To avoid this, the
following steps should be carried out.
Page 1355 of 1897
A05284Align Intake
A05198
Intake
Main GearSub-GearService Bolt
A05199
Intake
7
85
6
3
4
1
2
9
10
A05200
7
8
5
6
3
4
1
2
9
10 Exhaust
- ENGINE MECHANICALCYLINDER HEAD
EM-37
1021 Author: Date:
2001 AVALON (RM808U)
(a) Remove the intake camshaft.
(1) Align the timing marks (1 dot mark) of the camshaft
drive and driven gears by turning the camshaft with
a wrench.
(2) Secure the exhaust camshaft sub-gear to the main
gear with a service bolt.
Recommended service bolt:
Thread diameter6 mm
Thread pitch1.0 mm
Bolt length16 - 20 mm (0.63 - 0.79 in.)
HINT:
When removing the camshaft, make sure that the torsional
spring force of the sub-gear has been eliminated by the above
operation.
(b) Uniformly loosen and remove the 10 bearing cap bolts in
several passes and in the sequence shown.
(c) Remove the 5 bearing caps and intake camshaft.
(d) Remove the exhaust camshaft.
(1) Uniformly loosen and remove the 10 bearing cap
bolts in several passes and in the sequence shown.
(2) Remove the 5 bearing caps, oil seal and exhaust
camshaft.
HINT:
Arrange the camshafts in the correct order.
Arrange the bearing caps in the correct order.
Page 1356 of 1897
P12596
P12797
SST
P12590
A05222
FrontRecessed Heat Bolt
8 mm Hexagon Wrench
EM-38
- ENGINE MECHANICALCYLINDER HEAD
1022 Author: Date:
2001 AVALON (RM808U)
31. DISASSEMBLE EXHAUST CAMSHAFTS
(a) Mount the hexagonal wrench head portion of the cam-
shaft in a vise.
NOTICE:
Be careful not to damage the camshaft.
(b) Using SST, turn the sub-gear counterclockwise, and re-
move the service bolt.
SST 09960-10010 (09962-01000, 09963-00500)
(c) Using snap ring pliers, remove the snap ring.
(d) Remove the wave washer, camshaft sub-gear, and cam-
shaft gear spring.
HINT:
Arrange the camshaft sub-gears and gear springs (RH and LH
side).
32. REMOVE CYLINDER HEADS
(a) Using an 8 mm hexagon wrench, remove the cylinder
head (recessed head) bolt on each cylinder head, then re-
peat for the other side, as shown.
Page 1359 of 1897
P12802
SST
Z09124
A05739
A05740
- ENGINE MECHANICALCYLINDER HEAD
EM-53
1037 Author: Date:
2001 AVALON (RM808U)
(f) Using SST and a hammer, tap in a new guide bushing to
the specified protrusion height.
SST 09201-01055, 09950-70010 (09951-07100)
Protrusion height:
Intake11.1 - 11.3 mm (0.437 - 0.453 in.)
Exhaust8.9 - 9.3 mm - (0.350 - 0.366 in.)
(g) Using a sharp 5.5 mm reamer, ream the guide bushing to
obtain the standard specified clearance (See page
EM-42) between the guide bushing and valve stem.
2. REPLACE CAMSHAFT TIMING GEAR (VVT-i)
NOTICE:
Do not remove or install the camshaft timing gear (VVT-i)
beside changing VVT-i or the camshaft.
(a) Mount the hexagon wrench head portion of the camshaft
in a vise.
NOTICE:
Be careful not to damage the camshaft.
(b) Using a 46 mm socket wrench, remove the lock nut by
turning it clockwise.
NOTICE:
Remove it under the condition that the lock pin is op-
erated and lock at the maximum delay angle position.
The lock nut have LH threads.
Never use any tool other than the socket wrench,
otherwise that may result in deforming the cam angle
rotor portion.
(c) Remove the camshaft VVT-i.
HINT:
In case of having difficulty to remove VVT-i, apply a slight hit-
ting using a plastic-faced hammer and then remove it.
NOTICE:
Never remove the 3 bolts on the gear.
Page 1360 of 1897
A05706
Align
A05738
A05245
A05243
EM-54
- ENGINE MECHANICALCYLINDER HEAD
1038 Author: Date:
2001 AVALON (RM808U)
(d) Align the knock pin and knock pin groove and install VVT-
i on the camshaft.
NOTICE:
Install it under the condition that the lock pin is operated
and lock at the maximum delay angle position.
(e) Apply the engine oil on the nut, the placing surface of
VVT-i and the screw portion.
HINT:
Be sure to apply the oil, otherwise the prescribed torque cannot
be obtained.
(f) Using a 46 mm socket wrench, install and torque a new
lock nut by turning it counterclockwise.
Torque: 150 N´m (1,530 kgf´cm, 110 ft´lbf)
NOTICE:
Must change the nuts to the new ones when to change
VVT-i.
The lock nut have LH threads.
Never use any tool other than the socket wrench,
otherwise that may result in deforming the cam angle
rotor portion.
3. REPLACE SPARK PLUG TUBE GASKETS
(a) Bend up the tab on the ventilation baffle plate which pre-
vents the gasket from the slipping out.
(b) Using a screwdriver and hammer, tap out the gasket.
(c) Using needle-nose pliers, pry out the gasket.
Page 1378 of 1897
A06659
No.2 Timing Belt CoverTiming Belt
Timing Belt Guide
No.2 Generator
Bracket RH Engine Mounting Bracket
Crankshaft
PulleyGasket
Engine Wire
Protector
RH Camshaft Timing Pulley
No.2 Idler Pulley
Crankshaft
Timing PulleyDust Boot
Timing Belt Plate Plate Washer
215 (2,200, 159)
43 (440, 32)
27 (280, 20)
Timing Belt Tensioner
N´m (kgf´cm, ft´lbf) : Specified torque
Non-reusable part
28 (290, 21)
No.1 Timing Belt Cover
125 (1,300, 94)
*88 (900, 65)
LH Camshaft
Timing Pulley
No.1 Idler Pulley
34 (350, 25)
Precoated part
* For use with SST
125 (1,300, 94)
EM-14
- ENGINE MECHANICALTIMING BELT
998 Author: Date:
2001 AVALON (RM808U)
Page 1379 of 1897
EM0ZC-02
EM3336
NO!
P20042A02309
P12604
- ENGINE MECHANICALTIMING BELT
EM-19
1003 Author: Date:
2001 AVALON (RM808U)
INSPECTION
1. INSPECT TIMING BELT
NOTICE:
Do not bend, twist or turn the timing belt inside out.
Do not allow the timing belt to come into contact with
oil, water or steam.
Do not utilize timing belt tension when installing or re-
moving the mount bolt of the camshaft timing pulley.
If there are any defects, as shown in the illustrations, check
these points:
(a) Premature parting
Check for proper installation.
Check the timing cover gasket for damage and
proper installation.
(b) If the belt teeth are cracked or damaged, check to see if
either camshaft is locked.
(c) If there is noticeable wear or cracks on the belt face,
check to see if there are nicks on the side of the idler
pulley lock and water pump.
(d) If there is wear or damage on only one side of the belt,
check the belt guide and the alignment of each pulley.
(e) If there is noticeable wear on the belt teeth, check timing
cover for damage and check gasket has been installed
correctly and for foreign material on the pulley teeth.
If necessary, replace the timing belt.
2. INSPECT IDLER PULLEYS
(a) Visually check the seal portion of the idler pulley for oil
leakage.
If leakage is found, replace the idler pulley.
(b) Check that the idler pulley turns smoothly.
If necessary, replace the idler pulley.
Page 1381 of 1897
EM0ZD-02
A05060
Inward
Sensor
A01802
10 mm
Hexagon
Wrench
Plate Washer
A05055
A05061
Fulcrum
Length
SSTSST
RH
- ENGINE MECHANICALTIMING BELT
EM-21
1005 Author: Date:
2001 AVALON (RM808U)
INSTALLATION
1. INSTALL CRANKSHAFT TIMING PULLEY
(a) Align the pulley set key with the key groove of the timing
pulley, and slide on the timing pulley.
(b) Install the timing pulley, facing the sensor side inward.
NOTICE:
Do not scratch the sensor part of the crankshaft timing
pulley.
(c) Install the timing belt plate with the bolt.
Torque: 8 N´m (80 kgf´cm, 69 in.´lbf)
2. INSTALL NO.1 IDLER PULLEY
Adhesive: Part No. 08833-00080, THREE BOND 1344,
LOCTITE 242 or equivalent
(a) Using a 10 mm hexagon wrench, install the plate washer
and idler pulley with the pivot bolt.
Torque: 34 N´m (350 kgf´cm, 25 ft´lbf)
(b) Check that the pulley bracket moves smoothly.
3. INSTALL NO.2 IDLER PULLEY
(a) Install the idler pulley with the bolt.
Torque: 43 N´m (440 kgf´cm, 32 ft´lbf)
(b) Check that the idler pulley moves smoothly.
4. INSTALL RH CAMSHAFT TIMING PULLEY
(a) Face the flange side of the timing pulley outward.
(b) Align the knock pin on the camshaft with the knock pin
groove of the timing pulley, and slide on the timing pulley.
(c) Using SST, install the pulley bolt.
SST 09249-63010, 09960-10010 (09962-01000,
09963-01000)
Torque: 88 N´m (900 kgf´cm, 65 ft´lbf)
HINT:
Use a torque wrench with a fulcrum length of 340 mm (13.39
in.).
Page 1382 of 1897
A05056
LH
SST
P18811
A05063
SST
EM-22
- ENGINE MECHANICALTIMING BELT
1006 Author: Date:
2001 AVALON (RM808U)
5. INSTALL LH CAMSHAFT TIMING PULLEY
(a) Face the flange side of the timing pulley inward.
(b) Align the knock pin on the camshaft with the knock pin
groove of the timing pulley, and slide on the timing pulley.
(c) Using SST, install the pulley bolt.
SST 09960-10010 (09962-01000, 09963-01000)
Torque: 125 N´m (1,300 kgf´cm, 94 ft´lbf)
6. SET NO.1 CYLINDER TO TDC/COMPRESSION
(a) Crankshaft Timing Pulley Position:
(1) Temporarily install the crankshaft pulley bolt to the
crankshaft.
(2) Turn the crankshaft, and align the timing marks of
the crankshaft timing pulley and oil pump body.
(b) Camshaft Timing Pulley Positions:
Using SST, turn the camshaft pulley, align the timing
marks of the timing pulley and No.3 timing belt cover.
SST 09960-10010 (09962-01000, 09963-01000)