Westerbeke 3.0KW BPMG-60HZ Service Manual page 44

RAW WATER PUMP
Reassembly
Wipe the inside surface of the pump
dry.
Apply a film of
glycerin supplied in the impeller kit to the inside pump
surfaces and to the exposed area of the shaft lip seal.
1. Install a new shaft seal in the pump body. Apply some
glycerin to the lip of the seal.
2. Install the circlip on the shaft. Support the outer
bearing and push the shaft into the bearing until the
bearing contacts the circlip
3. Install the spacer against the circlip. Support the inner
bearing and push the shaft into the bearing until it
contacts the spacer.
4. Apply some glycerin onto the O·ring and install it on
the shaft approximately 1/8" away from the inner bearing.
5. Support the pump body on an arbor press. With a twisting
motion, install the shaft and bearing assembly into the
shaft seal until the inner bearing contacts the pump
body. Then assemble into the pump body so that the outer
bearing just clears the boss for circlip.
6. Install circlip and push the shaft and bearing assembly
so the outer bearing contacts the circlip.
7. Install the dust plate.
S. Install wear plate and cam and secure in place with
washers and screw.
DuolPumps
The wear plate is assembled above the impeller.
9. Apply some glycerin to the surface of the impeller
housing, impeller inner surface of the cover plate and
O-ring.
lO.With a twisting motion, install the impeller into the
pump. Install the O·ring and secure the cover with the
four screws.
NOTE:
Install the new impellers with a rotating motion so the
blades are working in the same direction of those of the
removed impeller.
DuolPumps
Assemble the upper pump to the lower pump as illustrated
making sure the mounting screws are tight.
WEAR
SETSCREW
~ WESTERBEKE
Engines & Generators
37
UPPER
PUMP SHAFT
SCREWS
FASTENS THE
UPPER PUMP
BOOYTO THE
4'1~::::::::~~
LOWER PUMP
PULLEY
a-RING GASKET
ONLY NEEDS TO BE
REPLACES IF IT SHOWS'
SIGNS OF AGING.
DUAL PUMPS
ASSEMBLY