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CYLINDER HEAD AND VALVES
1.
Tighten cylinder head bolts
in the sequence shown.
The engine
should be cold.
Loosen each bolt one-eighth to one-quarter turn
when tightening in the sequence shown.
Note that bolt 14 and 5
are located under the intake manifold where it is attached to the
head.
0
16
14
12
10
11
15
1
Head Bolt Tightening Torque:
0
0
0
0
Q
0
0
0
0
Exhaust Side
0
0
@J
0
@)
0
12.0 kg/m
(86
Ib/ft)
8
1
9
Intake side
0
10.5 kg/m
(76
Ib/ft)
6
2
7
2.
Tighten rocker shaft bracket bolts to 1.5 kg/m (11 Ib/ft).
3.
Adjust valve clearance with the engine cold following retorquing
of cylinder head bolts according to the following procedure.
The
valve clearance is 0.2 - 0.3 mm (0.009 - 0.012 inch).
A.
Rotate
the
crankshaft
slowly
in
the
normal
direction
of
rotation to bring the piston of the number
1
cylinder
(front
of engine)
to T.D.C. of it's compression stroke.
(Observe
when this
is done that the valves of the number 4 cylinder
are in a position of valve overlap, ie., the period between
the opening of the inlet valve and the closing of the exhaust
valve.)
B.
In
this
position
adjust
the
valve
clearance
in
the
conventional manner of the intake and exhaust valve of the
number
1
cylinder,
the
intake
valve
of
the
number
2
cylinder and the exhaust valve of the number 3 cylinder.
C.
Rotate the crankshaft in the normal direction of rotation one
full turn (360") and stop.
D.
In
this
position adjust
the valve clearance of
the
intake
and exhaust valve of the number 4 cylinder, the exhaust valve
of the number 2 cylinder and the intake valve of the number 3
cylinder.
Exhaust valves
l
\f
\
l
\ 1
I :
:
~
I :
\
---;---\
~ ~
"T"\
...
"
...
,./ U .,....
~
...
"
--
--
--
_
....
-~--
Inlet valves
24
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