Page 1339 of 1897

A05195
Intake
Service Bolt
A05208
Exhaust
90°
P12805
Exhaust
Front
A02008
Exhaust
Seal
Packing
A05209
Exhaust
- ENGINE MECHANICALCYLINDER HEAD
EM-63
1047 Author: Date:
2001 AVALON (RM808U)
(7) Remove the service bolt.
6. INSTALL 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.
(a) Install the exhaust camshaft.
(1) Apply new engine oil to the thrust portion and jour-
nal of the camshaft.
(2) Place the exhaust camshaft at 90° angle of timing
mark (1 dot mark) on the cylinder head.
(3) Apply MP grease to a new oil seal lip.
(4) Install the oil seal to the camshaft.
(5) Remove any old packing (FIPG) material.
(6) Apply seal packing to the No.1 bearing cap as
shown.
Seal packing: Part No. 08826-00080 or equivalent
(7) Install the 5 bearing caps in their proper locations.
Page 1340 of 1897

A05210
Exhaust
8
7
6
5
4
32
1
9
10
A05211
Intake
Align
A05214
Intake
A05213
Intake6
5
4
3
2
1
910
7
8
A05198
IntakeService Bolt
EM-64
- ENGINE MECHANICALCYLINDER HEAD
1048 Author: Date:
2001 AVALON (RM808U)
(8) Apply a light coat of engine oil on the threads and
under the heads of the bearing cap bolts.
(9) Install and uniformly tighten the 10 bearing cap
bolts in several passes and in the sequence shown.
Torque: 16 N´m (160 kgf´cm, 12 ft´lbf)
(b) Install the intake camshaft.
(1) Apply new engine oil to the thrust portion and jour-
nal of the camshaft.
(2) Align the timing marks (1 dot mark) of the camshaft
drive and driven gears.
(3) Place the intake camshaft on the cylinder head.
(4) Install the 5 bearing caps in their proper locations.
(5) Apply a light coat of engine oil on the threads and
under the heads of bearing cap bolts.
(6) Install and uniformly tighten the 10 bearing cap
bolts in several passes and in the sequence shown.
Torque: 16 N´m (160 kgf´cm, 12 ft´lbf)
(7) Remove the service bolt.
7. CHECK AND ADJUST VALVE CLEARANCE
(See page EM-4)
Turn the camshaft and position the cam lobe upward, and
check and adjust the valve clearance.
Page 1342 of 1897

A06661
Manifold
Stay
A07283
New O-Ring
A07281
Manifold
Stay
A05188Inlet PipeRear
Plate
EM-66
- ENGINE MECHANICALCYLINDER HEAD
1050 Author: Date:
2001 AVALON (RM808U)
11. INSTALL RH EXHAUST MANIFOLD
(a) Install a new gasket and the exhaust manifold with the 6
nuts. Uniformly tighten the nuts in several passes.
Torque: 49 N´m (500 kgf´cm, 36 ft´lbf)
(b) Install the exhaust manifold stay with the bolt and nut. Al-
ternately tighten the bolt and nut.
Torque: 34 N´m (350 kgf´cm, 25 ft´lbf)
(c) Connect the A/F sensor connector.
12. INSTALL OIL DIPSTICK AND GUIDE
(a) Install a new O-ring to the dipstick guide.
(b) Apply soapy water to the O-ring.
(c) Push in the dipstick guide end into the guide hole of the
No.1 oil pan.
(d) Install the dipstick guide with the bolt.
Torque: 8 N´m (80 kgf´cm, 69 in.´lbf)
(e) Install the dipstick.
13. INSTALL LH EXHAUST MANIFOLD
(a) Install a new gasket and the exhaust manifold with the 6
nuts. Uniformly tighten the nuts in several passes.
Torque: 49 N´m (500 kgf´cm, 36 ft´lbf)
(b) Install the exhaust manifold stay with the bolt and nut. Al-
ternately tighten the bolt and nut.
Torque: 34 N´m (350 kgf´cm, 25 ft´lbf)
(c) Connect the A/F sensor connector.
14. INSTALL WATER INLET PIPE
(a) Install a new O-ring to the water inlet pipe.
(b) Apply soapy water to the O-ring.
(c) Connect the water inlet pipe to the water inlet.
(d) Install the bolt holding the water inlet pipe to the cylinder
head.
Torque: 19.5 N´m (200 kgf´cm, 14 ft´lbf)
15. INSTALL CYLINDER HEAD REAR PLATE
Torque: 8 N´m (80 kgf´cm, 69 in.´lbf)
16. INSTALL ENGINE WIRE PROTECTOR
17. INSTALL CAMSHAFT TIMING OIL CONTROL VALVES
18. INSTALL CAMSHAFT POSITION SENSORS
19. INSTALL NO.3 TIMING BELT COVER
(a) Check that the timing belt cover gaskets have no cracks
or peeling, etc.
If the gaskets have cracks or peeling etc., replace them using
these steps:
Using a screwdriver and gasket scraper, remove all
the old gasket material.
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 1346 of 1897

EM0ZI-02
P1151110 - 15 mm (0.39 - 0.59 in.)Adhesive
P12572
Protrusion
P12869
Flush
A05418
EM-56
- ENGINE MECHANICALCYLINDER HEAD
1040 Author: Date:
2001 AVALON (RM808U)
REASSEMBLY
HINT:
Thoroughly clean all parts to be assembled.
Before installing the parts, apply new engine oil to all slid-
ing and rotating surfaces.
Replace all gaskets and oil seals with new ones.
1. INSTALL SPARK PLUG TUBES
HINT:
When using a new cylinder head, spark plug tubes must be
installed.
(a) Apply adhesive to the end of the spark plug tube.
Adhesive: Part No. 08833-00070, THREE BOND 1324
or equivalent
(b) Using a press, press in a new spark plug tube until there
is 42.4 - 43.4 mm (1.669 - 1.709 in.) protruding from the
camshaft bearing cap installation surface of the cylinder
head.
NOTICE:
Avoid pressing a new spark plug tube in too far by measur-
ing the amount of the protrusion while pressing.
2. INSTALL PCV PIPES
HINT:
When using a new cylinder head, PCV pipe must be installed.
Using a wooden block and hammer, tap in a new PCV pipe until
its top side is flush with the cylinder head edge.
NOTICE:
Be careful not to damage the cylinder head edge.
3. INSTALL OIL CONTROL VALVE FILTER
(a) Assemble the valve filter and plug.
(b) Install the plug with new gasket.
Torque: 45 N´m (460 kgf´cm, 33 ft´lbf)
Page 1347 of 1897
A05276
P12719
SST
Z19062
Intake ExhaustMark
ºNOKº or
ºFN , INº
Light Brown SurfaceGray Surface
P12668
(4)
(3)
(2)
(1)
A05224
SST
- ENGINE MECHANICALCYLINDER HEAD
EM-57
1041 Author: Date:
2001 AVALON (RM808U)
4. INSTALL CYLINDER HEAD REAR COVER
Install the rear cover and gasket with the 6 bolts.
Torque: 10 N´m (100 kgf´cm, 7.3 ft´lbf)
5. INSTALL VALVES
(a) Using SST, push in a new oil seal.
SST 09201-41020
HINT:
The intake valve oil seal is light brown and the exhaust valve oil
seal is gray.
NOTICE:
Pay much attention when assembling the oil seal for intake
and exhaust. Assembling the wrong one may cause a fail-
ure.
(b) Install the valve (1), spring seat (2), valve spring (3) and
spring retainer (4).
(c) Using SST, compress the valve spring and place the 2
keepers around the valve stem.
SST 09202-70020 (09202-00010)
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 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.