Datsun 620 Series 1977 Service Manual page 67

5
Install rocker arms
by
pressing
valve springs
down with
a
screwdriver
6
Install valve rocker
springs
7
After
assembling
cylinder head
turn
camshaft until No
I
piston is
at
T D
C
on
its
compression
stroke
EM1S5
Fig
EM 83
A
embling cylinder
head
PISTON AND
CONNECTINGROD
1 Assemble
pistons piston pins and
connecting
rods
on
the de i g nat e d
cylinder
STl3030001
EM156
Fig EM 84
Installing piston
pin
EM157
Fig
EM 85
Assembling piston and
connecting rod
Notes
a
Piston
is
pressed
into
connecting
rod with
fitting
force of 0 5
to
5
tons
aid of Piston Pin Press
Stand STl303000 I
is necessary
When pressing piston pin into
con
necting rod apply engine
oil
to pin
and small end of
connecting
rod
Engine
Mechanical
b Arrange
so
that oil
jet
of
connect
ing rod
big
end is directed toward
right
side of
eylinder
block
c
Be
sure
to
install
piston
in
cylinders
with notch mark of
piston
head
toward
front
of
engine
2
Install piston rings
InstalI
top
and second
rings
in right
position
with
marked side up
Notes
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
j
c6J
EM158
Fig
EM 86
lalling pidon rings
3
Fix
bearings
on connecting
rod
and
connecting
rod cap
Note Clean back side of bearing
care
fully
ENGINE ASSEMBLY
The first
step
in
engine assembly
is
to
bolt Engine Attachment
ST0526000 I
to right
hand ide of
cylinder
block Next install block
on
another
Engine
Stand ST0501S000
with engine bottom
up
2
Set
main bearings at
the proper
portion
of
cylinder
block
Rear Front
III
III
m
It IlL
D
D
D
D D
1
5
1 4
1
3
1
2
1
1
EM159
Fig
EM 87 Main bearings
EM 22
3
Install baffle plate including
cyl
inder block
net
Notes
a
Only
center bearing
No 3 is
a
flanged
type
b All inter bear i n gs No 2 and No 4
are
the
same type
c
Front bearing
No
I is
also the
same type as rear
bearing No
5
The
difference is that
an
oil hole is
provided
in the front
bearing
d All upper and lower bearings are
interchangeable
4
Apply engine
oil
to main bearing
surfaces
on
both sides of
cylinder
block and
cap
and then install crank
shaft
5 Install
main bearing
cap and
tight
en
bolts
to
specified
torque
Tightening torque
4 5 to
5 5
kg
m
33
to
40 ft lb
Notes
a
Apply
sealant to
each side of
rear
main
bearing
cap and each
comer
of
eylinder
block
as
shown in
Figure EM 79
b
Arrange parts
so
arrow
mark
on
bearing
cap faces toward front of
engine
c
Prior
to
tightening bearing
cap
bolts place
bearing
cap in proper
position by
shifting crankshaft in
the axial direction
d Tighten bearing
cap bolts
gradually
in
two to
three
stages outwardly
from
center
bearing
in the sequence
as
shown in
Figure
EM 88
e
After
securing bearing
cap bolts
ascertain that
aankshaft
turns
smoothly
@
i
d
l
j 1
@EM543
Fig EM 8S
Torque
sequence
0
cap
bolt