Datsun 1980 200SX Service Manual page 64

I
Intake rocker shaft has
identifi
cation
mark slit
on
front surface
but
exhaust rocker shaft does
not
2
Both rocker shafts should be
as
sembled
so
that
punched
marks
on
front surfaces
come
to upside
Marks
are
used
to
identify oil hole direction
Slits
Intake
Front
0
Exhaust
SEM162
3
Valve rocker
is
same
for intake
and exhaust and also
No 1
and
No 3
cylinder
and
provides
identification
mark
I
Similarly the
one
for
No
2
and No 4 cylinder
provides
mark 2
4
Be careful
not to
miss
original
location of rocker shaft brackets For
this purpose
identification marks
are
provided
on
each bracket and
cylinder
head
A
Z Marked
on
cylinder
head
v
Marked
on
brackets
SEM163
To prevent
rocker shaft brackeu
from
slipping
out
of rocker shafts
insert bracket bolts any bolt will dol
into bolt
holes
of
No 1 and No 5
rocker shaft bracket
3
Mount camshaft
onto
cylinder
head
placing dowellpin at
front end
to
top
position
ENGINE MECHANICAL Engine
Assembly
Plae e
upside
SEM164
4 Mount
valve rocker shaft assembly
on
cylinder head
by accommodating
to
knock
pin
of the head Then tight
en to the specified
torque
lil Rocker
shaft bracket bolt
15 25 N m
1 5
2 5 kg
m
11 18 ft lb
a
Tighten
bolts
gradually
in
two to
three stages outwardly from
center
bracket
b
When
tightening
bolts
make
space
under
cylinder head
since
some
valves will open and
interfered
t
Z
5
After
assembling
Ll1IU
r
head
turn
camshaft until No 1
piston
is at
T
D
C
on
its
compression stroke
ASSEMBLING
PISTON AND
CONNECTING ROD
I
Assemble pistons piston pins
and
connecting rods of the
designated
cyl
inder
a
Piston
pin
is
pressed
into connect
ing
rod and
fitting
force is
from
4 9
to
14 7 kN 0 5
to
1 5 t
0 6
to
1 7 US
ton
0 49
to
1 48
Imp tonl
and the aid
of Tool is necessary
When
pressing piston pin
in
con
necting
rod
apply engine
oil to pin
and
small
end of
connecting rod
ST13030001
SEM156
b
Arrange so
that oil
jet
of connect
ing rod
big
end is directed
toward
the
right
side of
cylinder
block
EM151
c
Connecting rods
are
marked
at
side
of
big end
for
identifying
the de
signated cylinder
2
Install
piston rings
Install
so
that
stamped
mark
on
ring
faces
upward
a
Top ring
is
chromium
plated
on
liner contacting
face
b
Second ring
has
larger
taper
surface
than
top
ring
c
In the
combined oil ring
upper rail
is the
same as
lower
one
Marked side
1
101
r
EM158
EM 15