Datsun 1000 - WATER PUMP

3 Cooling
System
4 W TER PU IP
TO REMOVE
l
Remove the radiator
cap
and drain the
cooling
system
via the
tap
on the lower
radiator
tank and at the
plug
on the
left
hand side of the
cylinder
block
2
Disconnect
and remove the
upper
and lower
radiator hoses
3 On
vehicles
fitted
with automatic
transmission and
where
applicable
disconnect
the
torque
converter
coolIng
pipes
at the
lower
radiator tank
plug
the
pipes
and unions
to
prevent entry
of
dirt
4 Unscrew
the
fixing
bolts and
remove
the radiator
grille
5
Remove the four
radiator
retaining
bolts and lift
out the radiator
6
Slacken the fan belt
adjusting
bracket bolt and
the
two bolts
attaching
the alternator
to the
mounting
bracket
on the
cylinder
block
7 Push the
alternator towards the
cylinder
block
and
remove the fan belt
8 Bend
back the lock tabs
where
applicable
and
remove
the
four
bolts
securing
the
fan and fan
pulley to
the
water
pump
and withdraw the fan
and
pulley
9 Unscrew
the water
pump
to
timing
case
securing
bolts and detach the
water
pump
and
gasket
Discard the
gasket
Installation
is a
reversal of the removal
procedure
with
attention
given
to
the
following
Use a new
gasket
between
the
water
pump
and
timing
cover when
installing
the
pump
Apply
a
smear
of
jointing compound
to both
sides of
the new
gasket
Adjust
the
fan belt as described
under F AN BELT
TO ADJUST
Ensure
that the
cooling
system
drain
points
are closed
and that the
system
is
replenished
with clean
water
TO DISMANTLE
I
Drain the
cooling system
and
remove the water
pump
as
previously
described
2
Using
a suitable
puller
withdraw the
pump
pulley
flange
from
the
fOlWard
end of the
shaft and
bearing
assembly
3 Remove
the
bearing retaining
bearing
and shaft
assembly together
impeller
out
of
the
pump body
4
Press
the
impeller
off the end of the shaft
and
bearing
assembly
and withdraw the seal
assembly
5 Remove the seal
rubbing
block
and
shaft seal from
the
recess in the
impeller
clip
and
press
the
with
the seal and
TO
CHECK
NOTE
It is
generally unnecessary
to
dismantle
the water
pump assembly
unless it is
leaking
water
past
the seal or
if
the ball
bearing
has
becume noisv Once dismantled it is a
good policy
to
instal
a
complete
water
pump
kit
which
consists
of
seal as
emb
y
bearing
and
shaft
assemb
v
and
impeller
When the
pump
is removed
from
the
vehicle make
a
visual check
of
the
pump body If
it is
apparent
that the
pump body
is
corroded
or cracked then
it can be assumed
that the
pump
bodv
is unserviceable in which
case
the
complete
water
pump assembly
should be
discarded and a
new
unit
fitted
1
Check the
pump body
for
corrosion
cracks or
damage
2
Check the
bearing
for looseness in the
pump body
bore
and for
roughness
when
rotated
3 Check
that the water
by pass
hole in the
pump
body
and
timing
cover
are free
of obstruction
NOTE When
cleaning
the
pump components
do
not
immerse the
shaft
and
bearing assembly
in
cleaning
soh ent
if
rhe
assembly
is to
be
used
again
Q 5mm
0 020In
74 mm 2 913In
Assembly
Dimensions f
Vater
Pump
30
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