Datsun 510 series Workshop Manual page 18

h
W
and connecting rod assemblies Use a
piston ring
compressor
to
install the pistons through the top of
the
cylbder bore Make
sure
that the
pistons
and
rings
and the
cylinder
bores
are
lubricated with clean
engine
oil The
pistons
should be
arranged
so
that the
F mark faces
to
the
front
and with the
piston
ring
gaps
positioned
at
1800
to
each other Each
piston
must
be refitted into its original bore
NOTE
Single
inlet valve
springs
are
used
on
the 1400
cc
engine
double valve
springs
are
used
on
the 1600cc
and 1800 cc engines
Screw the valve rocker
pivots
with the locknuts into the
pivot bushing
Set the camshaft
locating plate
and install the
camshaft in the
cylinder
head with the groove in the
locating
plate directed
to
the front of the engine
Install the camshaft
sprocket
and
tighten it together with the fuel pump
earn
to
a
torque
reading
of 12 16
kgm
86 116 IbJt aeck that the
camshaft end
play
is within the
specified
limits Install the
rocker
arms
using
a
screwdriver
to press
down the valve springs
and fit the valve rocker springs
Gean the
joint
faces of the
cylinder
block and head
thoroughly
before installing
the
cylinder head Turn the crank
shaft until the No 1 piston
is at
T D C
on
its compression stroke
and make
sure
that the camshaft
sprocket
notch and the oblong
groove in the
locating
plate
are
correctly positioned
Care
should be taken
to
ensure
that the valves
are
clear from the
heads of the
pistons
The crankshaft
and
camshaft
must not
be
rotated
separately
or
the valves will strike the heads of the
pistons Temporarily tighten
the
two cylinder
head bolts 1 and
2 in Fig A 37
to
a torque
reading of 2 kgm 14 5 lb ft
Fit the crankshaft
sprocket
and distributor drive
gear
and
install the oil thrower Ensure that the
mating
marks
on
the
crankshaft
sprocket
face towards the front Install the
timing
chain making
sure
that the crankshaft and camshaft keys
are
XJinting upwards The marks on
the
timing
chain
must
be
aligned with the marks
on
the right hand side of the crankshaft
and camshaft
sprockets
It should be noted that three location
holes
are provided
in the camshaft
sprocket
See
Fig
A 3 8 The
camshaft sprocket being
set to
the No 2 location hole by the
manufacturers A stretched chain will however affect the valve
timing and if this
occurs
it will be necessary
to set
the camshaft
to
the No 3 location hole in the camshaft
sprocket
The chain
can
be checked by turning the engine
until the No 1
piston
is
at
T D C
on
its compression stroke In this position adjustment
will be
required
if the location notch
on
the camshaft sprocket
is
to
the left of the
groove on
the camshaft
locating plate
as
shown in the illustration The correction is made
by setting
the
camshaft
on the
No 3 location hole in the camshaft sprocket
the No 3 notch should then be
to
the
right
of the groove and
the valve
timing
will have to be set
using
the No 3
timing
mark
Install the chain
guide
and chain tensioner when the chain
is located
correctly
There should be
no protrusion
of the chain
tensioner
spindle
See
Fig
A 3 9 A
new
tensioner must be
fitted if the spindle
protrudes
Press
a new
oil seal into the
timing
cover
and fit the
cover
into position using
a new
gasket Apply sealing compound to
the front of the cylinder block and
to
the gasket and
to
the top
of the
timing cover
Ensure that the difference in height between
the
top
of the
timing
cover
and the upper face of the
cylinder
block does not
exceed 0 15
mm
0 006 in Two sizes of
timing
cover
bolts
are
used the size M8 0 3 15 in must be
tightened
to
a
torque reading
of 10 16 kgm 7 2 17 Ib ft and the
size M6 0 236 in
to
a torque
reading
of 0 4 0 8
kgm
2 9 81b ft
Install the crankshaft
pulley
and
water
pump
tighten
the
pulley nut to
a torque
reading
of 12 16
kgm
86 8 115 7Ib ft
then
set
the No 1 piston
at
TD C
on
its compression
stroke
Finally tighten the cylinder head bolts
to
the
specified
torque
reading in accordance with the tightening
sequence shown
in
Fig
A 3
The bolts should be
tightened
in three stages
as
follows
First stage
Second stage
Third stage
4 kgm
28 9 lbJt
6 kgm 43 4 IbJ
t
6 5
85
kgm
47 0 61 5lb ft
The cylinder
head bolts should be
retightened
if
necessary
after the engine has been
run
for several minutes
Install the oil pump and distributor drive
spindle
into the
front
cover as
described under Engine
Lubrication
System
r r f
i
Install the fuel pump
water
inlet elbow and front
engine
slinger Fit the oil strainer into
position
coat
the oil sump
gasket with
sealing compound and fit the gasket and oil
sump
to
the cylinder block Tighten the oil
sump
bolts in
a
diagonal
pattern
to
a
torque reading of 0 6 0 9 kgm 4 3
6 5 IbJt
Adjust the valve clearances
to
the
specified
cold
engine
ftgures following the procedures described under the
appropriate
heading
Final
adjustments
will be carried
out
after the engine
has been assembled
completely
and warmed up to
its nonnal
temperature
Install the
rear
engine slinger exhaust manifold and inlet
manifold Refit the distributor and carburettor assemblies as
described in their relevant sections
Install the fuel pipes and
vacuum
hose
making
sure
that
they
are
securely
cl
ped
Refit
the thermostat housing
thermostat and
water
outlet
together
with the
gasket
Bond the rocker
cover
gasket
to
the rocker
cover
using
sealant and fit the rocker
cover
to
the cylinder
head
Install the
spark plugs and
connect
the high tension leads
Fit the left hand engine mounting
bracket and install the clutch
assembly using
the
alignment
tool ST20600000
to
fit the clutch
to
the
flywheel
as
described in the section ClUfCR
Lift the engine
away
from the mounting stand and into
the
engine compartment
Install the alternator bracket
adjusting
bar alternator fan
pulley
fan and fan belt in the order
given
Check the tension of the fan belt by depressing the belt
at
a
point
midw
y
between the
pulleys
The tension is
correct
if
the belt is deflected
by
8 12
mm
0 3 0 4 in under thumb
pressure
Fit the
right
hand
engine mounting bracket the oil filter
oil pressure switch oil level
gauge
and water drain
plug
Take
care
not to
overtighten
the oil nIter
or
leakage
will
occur
Fill the
engine
and
gearbox
to
the
correct
levels with
recommended lubricant and refill the
cooling system Adjust
the ignition timing and carburettor
as
described in the appro
priate sections
17