Raw
Water Pump Overhaul
Raw
water pump #033636 repair instructions
are
as
follows:
Disassembly
The
pump,
as
removed
from the
engine,
will
have
hose
attachment nipples threaded into the its inlet
and
outlet port.
They
may
be
left
in
place or
removed
if they interfere with the pump disassembly. Note
the
port location
and
positioning if
removed.
a.
Remove
the six cover
plate
screws
(ref
13),
cover
plate
(ref
12)
and
the cover plate gasket
(ref
11).
NOTE:
Screw
material
should
be
stainless
steel
part number
034463.
Also,
replacement of
the cover
plate
gasket
is
recommended;
however,
if
you
are
going to
reuse
it,
keep
the
gasket
submerged
in
water
until
the pump
is
reassembled.
If it's
allowed
to dry, the gasket will shrink
and
not
be
reusable
b.
Remove
the impeller
(ref
9)
with its drive
screw
(ref
10)
from the pump housing.
c.
Remove
the screw
(ref
4)
and
sealing
washer
(ref
5)
and
draw the
cam
(ref
6)
from the pump
housing.
d.
Remove
the circlip
(ref
3).
e.
Support the pump
housing,
at
the mounting
flange
end,
on
an
arbor
press
and,
with a drift,
press
out
the
shaft
(ref
8)
and
bearings
(ref
2)
from
the
pump housing from the impeller
end.
f.
With
the pump housing supported,
push
the
seals
(ref
7)
out of
the
pump housing.
Push
the impeller
side
seal
out that
side
and
then lift the spacer
(ref
14)
out.
Then,
push
the bearing
side
seal
out that
side.
g.
Supporting the bearings inner
face
(ref
2),
push
the
shaft
(ref
8)
out of the
bearings.
NOTE:
Inspect
all
parts
and
replace
those showing
wear
or corrosion.
69
Westerbeke Engines
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