2001 TOYOTA AVALON check oil

P12754
Z00052
Z00054
44.5°
EM0181
Margin Thickness EM-44
- ENGINE MECHANICALCYLINDER HEAD
1028 Author
: Date
:
2001 AVALON (RM808U)
9. INSPECT VALVE STEMS AND GUIDE BUSHINGS
(a) Using a caliper gauge, measure the inside diameter of the
guide bushing.
Bushing inside diameter:
5.510 - 5.530 mm (0.2169 - 0.2177 in.)
(b) Using a micrometer, measure the diameter of the valve
stem.
Valve stem diameter:
Intake5.470 - 5.485 mm (0.2154 - 0.2159 in.)
Exhaust5.465 - 5.480 mm (0.2152 - 0.2157 in.)
(c) Subtract the valve stem diameter measurement from the
guide bushing guide bushing inside diameter measure-
ment.
Standard oil clearance:
Intake0.025 - 0.060 mm (0.0010 - 0.0024 in.)
Exhaust0.030 - 0.065 mm (0.0012 - 0.0026 in.)
Maximum oil clearance:
Intake0.08 mm (0.0031 in.)
Exhaust0.10 mm (0.0039 in.)
If the clearance is greater than maximum, replace the valve and
guide bushing.
10. INSPECT AND GRIND VALVES
(a) Grind the valve enough to remove pits and carbon.
(b) Check that the valve is ground to the correct valve face
angle.
Valve face angle: 44.5°
(c) Check the valve head margin thickness.
Standard margin thickness: 1.0 mm (0.039 in.)
Minimum margin thickness: 0.5 mm (0.020 in.)
If the margin thickness is less than minimum, replace the valve.

A05704
EM2011
EM2538
A05236
- ENGINE MECHANICALCYLINDER HEAD
EM-47
1031 Author
: Date
:
2001 AVALON (RM808U)
13. INSPECT CAMSHAFT FOR RUNOUT
(a) Place the camshaft on V-blocks.
(b) Using a dial indicator, measure the circle runout at the
center journal.
Maximum circle runout: 0.06 mm (0.0024 in.)
If the circle runout is greater than maximum, replace the cam-
shaft.
14. INSPECT CAM LOBES
Using a micrometer, measure the cam lobe height.
Standard cam lobe height:
Intake42.932 - 43.032 mm (1.6902 - 1.6942 in.)
Exhaust42.764 - 42.864 mm (1.6836 - 1.6876 in.)
Minimum cam lobe height:
Intake42.78 mm (1.6842 in.)
Exhaust42.61 mm (1.6776 in.)
If the cam lobe height is less than minimum, replace the cam-
shaft.
15. INSPECT CAMSHAFT JOURNALS
Using a micrometer, measure the journal diameter.
Journal diameter:
26.959 - 26.975 mm (1.0613 - 1.0620 in.)
If the journal diameter is not as specified, check the oil clear-
ance.
16. INSPECT CAMSHAFT BEARINGS
Check that bearings for flaking and scoring.
If the bearings are damaged, replace the bearing caps and cyl-
inder head as a set.

A05241
A05739
A05705
- ENGINE MECHANICALCYLINDER HEAD
EM-49
1033 Author
: Date
:
2001 AVALON (RM808U)
(c) Remove the camshafts.
19. INSPECT CAMSHAFT GEAR BACKLASH
(a) Install the camshafts without installing the exhaust cam
sub-gear (See page EM-59).
(b) Using a dial indicator, measure the backlash.
Standard backlash:
0.020 - 0.200 mm (0.0008 - 0.0079 in.)
Maximum backlash: 0.30 mm (0.0188 in.)
If the backlash is greater then maximum, replace the cam-
shafts.
(c) Remove the camshafts.
20. INSPECT CAMSHAFT TIMING GEAR (VVT-i)
(a) Mount the hexagon wrench head portion of the camshaft
in a vise.
(b) Check that VVT-i will not turn.
(c) Cover the port except the port on the advance angle side
(nearest to the convex portion) shown in the illustration
with the vinyl tape.
(d) Using the air gun, apply about 100 kPa (1 kgf/cm
3, 14 psi)
of air pressure to the port on the advance side shown in
the illustration.
NOTICE:
When the oil is splashed, wipe it off with a shop lug and the
likes.
HINT:
Perform this in order to release the lock pin for the maximum
delay angle locking.
Standard: Must turn
HINT:
Depending on the air pressure, VVT-i will turn to the advance
angle side without applying force by hand. Also, under the
condition that the pressure can be hardly applied because of
the air leakage from the port, there may be the case that the lock
pin could be hardly released.

EM3322
Free Distance
P12685
EM6368
P12400
EM-50
- ENGINE MECHANICALCYLINDER HEAD
1034 Author
: Date
:
2001 AVALON (RM808U)
(e) Under the condition of (d), turn VVT-i to the advance
angle side (the white arrow marked direction in the il-
lustration) with your hand.
(f) Except the position where the lock pin meets at the maxi-
mum delay angle, let VVT-i turn back and forth and check
the movable range and that there is no disturbance.
Standard: Movable smoothly in the range about 30°
(g) Turn VVT-i with your hand and lock it at the maximum
delay angle position.
21. INSPECT CAMSHAFT GEAR SPRING
Using vernier calipers, measure the free distance between the
spring ends.
Free distance: 18.2 - 18.8 mm (0.712 - 0.740 in.)
If the free distance is not as specified, replace the gear spring.
22. INSPECT VALVE LIFTERS AND LIFTER BORES
(a) Using a caliper gauge, measure the lifter bore diameter
of the cylinder head.
Lifter bore diameter:
31.000 - 31.018 mm (1.2205 - 1.2212 in.)
(b) Using a micrometer, measure the lifter diameter.
Lifter diameter:
30.966 - 30.976 mm (1.2191 - 1.2195 in.)
(c) Subtract the lifter diameter measurement from the lifter
bore diameter measurement.
Standard oil clearance:
0.024 - 0.050 mm (0.0009 - 0.0020 in.)
Maximum oil clearance: 0.07 mm (0.0028 in.)
If the oil clearance is greater than maximum, replace the lifter.
If necessary, replace the cylinder head.
23. INSPECT AIR INTAKE CHAMBER
Using a precision straight edge and feeler gauge, measure the
surface contacting the intake manifold for warpage.
Maximum warpage: 0.10 mm (0.0039 in.)
If warpage is greater than maximum, replace the chamber.

EM0ZJ-02
A10520
A05218
12 Pointed Head Bolt
Front
7246
5318
7246
5318
A05223
Painted Mark
Front90°
- ENGINE MECHANICALCYLINDER HEAD
EM-59
1043 Author
: Date
:
2001 AVALON (RM808U)
INSTALLATION
1. PLACE CYLINDER HEAD ON CYLINDER BLOCK
(a) Place 2 new cylinder head gaskets in position on the cylin-
der block.
NOTICE:
Be careful of the installation direction.
(b) Place the 2 cylinder heads in position on the cylinder head
gaskets.
2. INSTALL 12 POINTED HEAD CYLINDER HEAD BOLTS
HINT:

The cylinder head bolts are tightened in 2 progressive
steps (steps (c) and (e)).

If any bolt is broken or deformed, replace it.
(a) Apply a light coat of engine oil on the threads and under
the heads of the cylinder head bolts.
(b) Install the plate washer to the cylinder head bolt.
(c) Install and uniformly tighten the cylinder head bolts on
each cylinder head in several passes and in the sequence
shown, then repeat for the other side, as shown.
Torque: 54 N´m (550 kgf´cm, 40 ft´lbf)
If any of the cylinder head bolts does not meet the torque speci-
fication, replace the cylinder head bolt.
(d) Mark the front of the cylinder head bolt head with paint.
(e) Retighten the cylinder head bolts by 90° in the numerical
order shown.
(f) Check that the painted mark is now at a 90° angle to the
front.

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.

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.

EM-80
- ENGINE MECHANICALENGINE UNIT
1064 Author
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2001 AVALON (RM808U)
(d) Install the support stay with the 2 bolts.
Torque: 33 N´m (330 kgf´cm, 24 ft´lbf)
18. INSTALL RADIATOR (See page CO-22)
19. INSTALL CRUISE CONTROL ACTUATOR
20. INSTALL AIR CLEANER CAP ASSEMBLY AND AIR
CLEANER CASE
21. CONNECT ACCELERATOR CABLE
22. INSTALL V-BANK COVER
(a) Using a 5 mm hexagon wrench, install the V-bank cover
with the 3 cap nuts.
(b) Press down the V-bank cover fastener.
23. INSTALL ENGINE FENDER APRON SEALS
24. INSTALL BATTERY TRAY AND BATTERY
25. INSTALL HOOD
26. FILL ENGINE WITH OIL
27. FILL WITH ENGINE COOLANT
28. START ENGINE AND CHECK FOR LEAKS
29. PERFORM ROAD TEST
Check for abnormal noise, shock, slippage, correct shift points
and smooth operation.
30. RECHECK ENGINE COOLANT AND OIL LEVELS