Chapter 2 Basic Engine
4. Cylinder Head
,4LHA Ser
4-5
Assembling
the cylinder head
Partially
tighten
the
bolts
in the
specified order and then
tighten to the specified torque, being careful not
to
distort the
head.
(1)
Clean
out
the cylinder head bolt holes.
(2)
Check
for
foreign matter
on the
cylinder head surface
where
it
comes in contact
with
the block.
(3) Coat the head bolt threads and nut seats
with
lube oil.
(4)
Use
the positioning pins to line up the head gasket
with
the
cylinder block.
(5) Match
up the
cylinder head
with
the
head gasket
and
mount.
Exhaust
manifold side
Intake manifold side
4 Cylinder engine
mn
Top
clearance
4LHA-
DTE/DTZE/DTP/DTZP
STE/STZE/STP/STZP
4LHA-
HTE/HTZE/HTP/HTZP
0.71-0.89
0.81-0.99
(When head gasket thickness 1.35mm)
N*m(kgf-m)
First
Second
Final
Tightening torque
108
(11)
167
(17)
206
(21)
(Head
bolt
size
:
M13X1.5), Apply engine oil
to
the thread and
seat
surface
4-6
Measuring
top
clearance
(1)
Place
a
high quality fuse
(<P
1.5mm(0.0591
in.),
10mm
(0.3937
in.)
long)
in
three positions
on the
fiat
part
of
the piston
head.
(2) Assemble
the
cylinder head gasket and
the
cylinder
block and tighten
the
bolts
in the
specified order
to the
specified
torque.
(3) Tum
the
crank,
(in the
direction
of
engine revolution),
and
press the fuse against the piston until
it
breaks.
(4) Remove the head and take out the pressed fuse.
(5) Measure
the
three positions where each fuse
is
pressed
and calculate the average.
4-7 Intake
and
exhaust
valve
rocker
arms
Valve
rocker arm and valve rocker arm bushing wear may altei
opening/
closing timing
of the
valve, and may
in
turn
affec
engine performance according to the extent of the change.
2-19
To Next Page
Loading...
Need help?
General
