Assembly
a.
Install
the
seals
(ref
7)
and
spacer
(ref
14)
in
the pump housing.
Push
the impeller
side
seal
into the
housing.
Rotate
the pump
and
install the spacer
(ref
14)
against the
seal
face.
Push
the bearing
side
seal
into the housing from the
bearing
side.
NOTE:
The
seal's flat
surfaces,
having
printing
and
numbers,
face
towards
each
other.
b.
Install shaft
(ref
8)
into
bearings.
Support bearings
(ref
2)
at their center
race.
Push
the
shaft
into
the
bearings,
pushing at the impeller drive slot
end
using the
base
of the drive
slot.
Push
the
shaft
through
both of the
bearings,
flush against
each
other
so
the flat
sided
end
of the shaft extends beyond the
second
bearing center
race
15
mm
(19/32
in.)
±.5
mm
(1132
in.).
c.
Support the pump housing at the impeller
side.
Apply a
small
amount of petroleum jelly to the seal's
(ref
7)
inner lips
and
to impeller
shaft
(ref
8).
Carefully,
install the
shaft
rotating it through the
seals
till the
bearings contact the housing from the
bearing
end.
Use
a pushing tool that will
push
this
shaft
and
bearing assembly into the pump housing by applying
pressure
against the outer bearing
race.
Push
the
assembly into the housing until the bearings
seat
fully
in
the housing.
Install
the circlip
(ref
3).
d.
Position the
cam
(ref
6)
in
the housing
and
secure
it
in
place
with the screw
(ref
4)
and
sealing washer
(ref
5).
NOTE:
Use
a
small
amount of
Permatex
#1
on
the inner
cam
surface
and
screw threads.
Remove
any
excess
from the impeller housing.
e.
Apply a light film
of
silicone or petroleum jelly to the inner
surface
of
the housing for the impeller.
NOTE:
Just coat the
surface,
do not over apply.
Install
the impeller with the drive screw (ref
9
and
10).
Push
the assembly into the housing with the drive screw mating
in
the slot of the
drive
shaft.
f.
Install
the cover gasket (ref
11),
cover
(ref
12),
and
secure
them with the six cover screws (ref
13).
Westerbeke Engines
70
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