Datsun 1000 Workshop Manual page 43

COVER
SCREW
GAS KET
UTR
BOOY
AVALV
ES
Gb A SKET
4
iJ
j
r
L
kF
SCREW
Fuel
System
10
@f
0
SPRING
o i I
SPRIN
g
ft
DIAPHRAGM
LOWER BOOY
GAS
ROCKER ARM
SPAeER
l
Exploded
view of Fuel Pump Components
RETAINER AND SCREWS
Ensure that all
traces
of old gasket
are
removed
before
the
new
gaskets
are
fitted and the pump
installed
A
smear
of jointing compound applied
to
both
sides
of
the
gasket
will
help sealing
TO DISMANTLE
I
Remove the
fuel
pump
from
the
engine
as
previously
described
2 Actuate the rocker
arm
by
hand
and
expel
residual
fuel
out
of the pump into
a
suitable container
3 Remove the pump top
cover
retaining
screws
and
detach the
top
CO
e f
and gasket
4
With the
corner
of
a
file mark
the assembled
position
of the upper and lower
body
section of the pump
to
facilitate
correct
assembly
5 Remove the
screws
from the pump upper
body and
separate
the two pump body section
6 Mark
or
note
the
position
of the inlet and outlet
valves in relation
to
the pump upper
body
section
7 Remove the
two screws
from the valve retainer and
take
out
the retainer
valves and
gaskets
Discard the
gaskets
8 Press
down
on
the diaphragm and
by using
a
probe
working through
the
rocker
arm aperture
in the
pump
lower
body
unhook the
diaphragm stem
from
the end
of
the rocker
arm
9 Withdraw the
diaphragm
and lift off the
diaphragm
spring
take
out
the seal retainer
and
withdraw
the
diaphragm stern oil
seal
from
the pump
lower body
10
Relieve the
staking
on one
end of the rocker
arm
pivot pin
and
with the
pump
suitably supported
on
the
pivot pin boss tap
in
one
end of the
rocker
arm
pivot pin
with
a
pin punch
to
remove
it
from
the
opposite
end
of
the
pump
body
II Withdraw the
pin punch
and
lift out the rocker
arm
and rocker
arm
spring
TO CLEAN AND CHECK
J Wash all
components
thoroughly
in
cleaning
solvent
2 Check the pump diaphragm
and stem
oil seal
for
perforation
and
or
deterioration
3 Check the valve
assemblies and mechanical linkage
for undue
wear
4 Using
a
suitable flat
surface
or
surface
plate
check
the
diaphragm
surface
of
the
two
main
sections of the
pump for distortion
Rectify by filing
if necessary
5 Renew faulty
components as
found necessary
NOTE
If
a
fuel
pump has
seen
considerable
service and is
dismantled for repair
or
inspection it is
advisable
tv
fit
a
repair
kit which includes
diaphragm seal valves and gasket
This wi i
ensure
a
thorough job
and
further trouble free
service
from
the unit
Mounting Position
of
Disposable
Type Fuel Filter
Assembly
43