Datsun 1000 - OIL PUMP AND FILTER

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 PUMP AND FILTER
PLUo
fi
GASKET
VALVE SPRIN
V
PRESSURE REGULATOR ALVE
I
l
I rrch
iitl
r
Y
INNER ROTOR AND SHAFT
O SY
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
RET AINER 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 crewed
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
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