Datsun 1000 Workshop Manual page 23

bearing
there
is
an
arrow cast
in the cap
of ail
other
bearings
which
must point to
the
front of
the
engine
8 Lift the ctankshaft
directly
upwards
and
remove
from the
qankcaSe
9
Remove the
upper half of
the main
bearings and
keep
them
together
in
pairs
with each cap for
correct
reassembly
NOTE The
centre
main bearing
shells have
a
flange
on
each
side
to fake crankshaft
end thrust
Ins allation
is
a
reversal of
the
removal procedure
with
attention
to the following
points
Journals and
bearing
shells should be checked fat
excessive
wear
taper
or sc
ring
Bearings
that
are
unserviceable should be replaced
with
the
appropriate
undersize shells
and the journal
ground
to
fit
Engine I 7
One
damaged journal
will
necessitate
the grinding of
all
journills
and
fitting new undersize hearing shells
or
fitting
a
new crankshaft and standard
bearings
Ensure
that the
row
on
the bearing
cap
points
to
the frorit of the engine
and the number
on
the cap coincides
with
the number
on
the crarikcase
Connect
up
the
connecting rod
big ends to
the
crankpins
before
tightening
the
main
bearing
bolts and then
tighten one main
bearing
to the
specified torque followed
by rotatil
g Jhe
crankshaft
one
or
two
revolutions
to check
forbindirtg
It will be
good policy to
renew
the
rear
main bearing
oil
se l d
the seal
in
the
timing
cover
Instal
new
gaskets
throughout
It
will be necessarY
to
resei
the valve
timing
on
the
timing chain
and
sprockets
check
the
ignition timing
and
adjust
rocker to valve
stem
clearance with
the
engine
installed and at working temperature
TO REMOVE AND
INSTAL
JI
011
P UMP AND FILTER
PLUo fi
GASKET
VALVE SPRIN
V
PRESSURE REGULATOR ALVE
I
l
I r rch
iitl
r
Y
INNER ROTOR AND SHAFT
O S Y PASS VALVE
d
SPRING
EXPANSION PLUG
1
Grasp
the oil filter body firmly
turn it
anti clockwise and
upscrew
it
off the oil
pump
body If the
filter is
too
tight to
rotate
by hand
a
special tool
is
available
to
fit the lower end
of
t1ie filter bo
dy
Take out the three securing
screws
and withdraw
the
oil
pump
from
the
right
hand
side of
the
crankcase
Installation
is
a
eversa1 of the removal procedure vitti
attention to the
following points
Use
a
new
gasket 1
etween
the
pump
cover imd
the
pump
body and the
body
and crankcase
Tighten the
three
pump
securing
bolts
to
the specified
torque see
Specifications
Irtstal
a new
filter if
the
original
unit is not
comparatively
ne
Tighten
the
filter to the
pump by hand only
Do
not
over
tighten
or
leaking
may
result
Ensure that
gasket faces
are
dean
and free of
any
burrs
TO DISMANTLE
AND
ASSEMBLE
1
Remove the oil
filter
take
out
the tiuee securing
bolts and
withdraw the pump
assembly
from the crankcase
Discard
the
gasket
2
Unscrew
and
remove
the
single
bolt
attaching
the
GASKET
PUMP
BODV
DRI E GEAR
1
lA
iifJ
J
aja
11
a
RETAINER PIN
Exploded
View
of
Oil
Pump Components
body cover
to the main
body of
the pump
separate
the two
assemblies
and discard the
gasket
3 Mark the outer end face of the pump
outer
trochoid
rotor
and
refl10ve
it
by tapping the end of
the
main
body
on
the bench
4
USing
a
suitable pin punch
drive
out
the
pin
securing the
pump diive gear
0
the shaft and
tap
the
shaft
and inner rotor
out
f
the gear
and
the
pump
body
NOTE DiJ not remove the inner
rotor
from the shaft
Renew the
shaft
and inner rotor
as an
assembly
if
either
are
worn
0
5 Unscrew and
remove
the
screwed
plug and
gasket
and withdraw the pressure relief valve and
spring
00
not
lose the
adjusting
shim
between
the outer end
of
the
spring
and the s c r e wed
plug
6
Unscrew and remove the
pressure
gauge
sending
unit
being
careful
to
avoid
damage io
the sender element
7
Using
a
sharp
centre
punch
driven
through the
23