|
1.Remove all ignition
coils.
|
|
2.Remove the cylinder head
cover.
caution |
Turn the crankshaft always
clockwise.
|
|
![](../../../img/11/AK604565AD00ENG.png)
|
3.Turn the crankshaft
clockwise, and align the timing mark on the exhaust camshaft
sprocket
against the upper face of the cylinder head as shown in
Figure. Therefore, No.1 cylinder goes
to the compression top dead centre.
|
![](../../../img/11/AK502387AH00ENG.png)
|
4.Using a thickness gauge,
measure the valve clearance with the arrow shown in Figure.
If
deviated from the standard value, make note for the valve
clearance. Standard
value:
Intake valve 0.20 ±
0.03 mm Exhaust valve 0.30 ±
0.03 mm
|
![](../../../img/11/AK604566AD00ENG.png)
|
5.Turn the crankshaft
clockwise 360 degrees, and put the timing mark on the
exhaust camshaft
sprocket in position shown in Figure. Therefore, No.4
cylinder goes to the compression top dead
centre.
|
![](../../../img/11/AK502388AE00ENG.png)
|
6.Check the valve clearance
with the arrow shown in Figure. In the same procedure as
4. 7.If the valve clearance is deviated from the
standard value, remove the camshaft and
the valve tappet. For the camshaft removal, refer to
Camshaft Removal and Installation .
|
![](../../../img/11/AK304938AB00ENG.png)
|
8.Using a micrometer,
measure the thickness of the removed valve tappet.
|
![](../../../img/11/AK703500AC00ENG.png)
|
9.Calculate the thickness of
the newly installed valve tappet through the following
equation. A: thickness of newly installed valve tappet
B: thickness of removed valve tappet C: measured
valve
clearance Equation
Intake
valve: A =
B +
(C -
0.20
mm) Exhaust valve: A =
B +
(C -
0.30 mm)
note |
The valve tappet ranges 3,000
-
3,690 mm and has 47 types per 0.015 mm. The
thickness
below a decimal point is stamped on the reverse
side of the valve tappet.
|
10.Install the valve tappet selected through
the procedure 9, and put the camshaft in
position. For the camshaft installation, refer to Camshaft
Removal and Installation . 11.After
installing the timing chain, measure the valve clearance
using the procedure
3 to 6. Confirm the clearance is within the standard
value.
caution |
Completely remove all the old
liquid gasket, which might be
remaining among the components.
|
12.Remove any liquid gasket remaining on the
cylinder head cover, the timing chain case
and the cylinder head. 13.Using white gasoline and
so on, degrease the cylinder head cover, timing chain case
and cylinder head.
caution |
The cylinder head cover should
be installed within 3 minutes
of applying liquid gasket.
|
|
![](../../../img/11/AK701438AB00ENG.png)
|
14.Apply a 4 mm bead of
liquid gasket as illustrated. Specified
sealant:
ThreeBond 1217G or
equivalent
|
![](../../../img/11/AC506743AG00ENG.png)
|
15. Install the cylinder
head cover and tighten the tightening bolts using the
following
procedures. (1)
Temporarily tighten to the following torque in order shown
in the illustration. Tightening torque: 3.0
±
1.0 N·m (2)
Tighten to the specified torque in order shown in the
illustration. Specified torque: 5.5 ±
0.5 N·m 16.Install the ignition
coils.
|