Datsun 1000 Workshop Manual page 16

lQ
Engine
Showing Wear
Limit for Timing Chain
Stretch
and
Tensioner Pad
Wear
in
relation to
the
centre of
the
crankshaft
4
With the camshaft and crankshaft
positioned
as
in
i
and 3 above
a
line drawn
through
the
centre
of each
shaft will also pass
through
the
centre
of the camshaft
dowei
and the
crankshaft key
5
uy
the
camshaft
sprocket
flat
on a
bench
with the
timing
mark dimple
to
the top arid facing
up
The
locating
dowel hole will be at 4
0
clock
6 Loop
the timing chain
on
the camshaft
sprocket
so
that
one
of the
two
marked
link
plates
of the
chain
engages
the
sprocket
adjacen
t
to
the
sprocket timing
mark dimple
The second marked chain
link
plate must
be
to
the right on
the short chain
run
SPROCKET
RETAINING WASHER
BOLT
t
4
RETAIDlER PLATE
1
SPRING WASHER
TIMING CHAIN
TENSIONER
BODY
fE
NSIONER SPRING
0
SUPPER HEAD
WASHER
Camshaft and Timing
Chain Components
NOTE The
liming clwill
lillk
plale
marks circles
are
rell
plates
apart on
the shortest chain
run
This includes the
marked plates
7 Grasp
the camshaft
sprocker engaged
in the
chain
and
position
it
on
the camshaft looping
the
chain around
the crankshaft sprocket
so
that the second mark circle
on
the chain link
is
adjacent
to the timing
mark
dimple
on
the crankshaft
sprocket
see
illustration
8
Push the
camshaft sprocket
on
to
fully
engage
the
locating
dowel
lnstal
the
securing
bolt
and
washers and
tighten
to
the
specified
torque see
Specifications
9 Check
that
both sprocket
and chain
timing
minks
register
for
correct
valve
timing
10 Instal the chairi tensioner
on
the front face of the
cylinder block ensuring that
the long
end of the slipper
pad
is to
the camshaft
sprocket
II
Check
that
the
side tensioner pad
in the
timing
cover
is
serviceable
and
renew
if excessively
worn
12 Instal
a new
oil
seal
in the
timing
cover
with the
lipped
face
of
the seal towards the
timing sprocket
Instal
the oil
slinger
if fitted with the
concave
face towards
the
crankshaft pulley
i
3 Further installation
is
a
reversal of the removal
procedure
with attention
to the
following
Fit
new
gaskets
where necessary
Do
not
over
tighten
the sump
retaining bolts
7 C AMSHAFT
ND TAI
PETS
2
Evenly
and progressively loosen the
rocker
pedestal
securing bolts and
remove
the rocker arm and shaft
assembly
3 Take
out
the
retaining
bolt and withdraw the
crankshaft
pulley
TO REMOVE
I
With the
engine
removed from
the
vehicle
remove
the
water
pump and fan
assembly
and take off the
rocker
cover
16