Reassembly - Westerbeke 3.0 BPMG Operator's Manual

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 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. Warming the pump body should aid in installing the shaft
and bearing assembly. Support the pump body on an arbor
press. With a twisting motion, install the shaft and bearing
assembly into the pump until the inner bearing seats and
the outer bearing should just clear the boss for circlip B.
Rotate the shaft. It should
turn
freely.
5. Install circlip B and push the shaft assembly until the
outer bearing just contacts circlip B and install the dust
plate. Rotate the shaft. It should
turn
freely.
6. Put some glycerin on the outer surface of the ceramic seal
seat and slide it over the shaft white ceramic facing out
and seat it in the body of the pump. Place some glycerin
on the inner area and with a twisting motion slide it over
the shaft until the ceramic of the spring seal touches the
white ceramic face.
7. Install the brass plate and circlip A.
8. Install the wear plate, locking it in position on the dowel
pin.
Dual Pumps
The wear plate is assembled above the impeller.
9. Install the cam and place some gasket cement on the
threads of the screw that secures it in place.
10.Place some glycerin on the inner surface of the pump, the
inner surface of the cover and the cover sealing 0-ring
and with a twisting motion install the impeller on the shaft
of the pump. Install the covers 0-ring and cover and
secure the cover with the four cover 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.
Dual Pumps
Assemble the upper pump to the lower pump as illustrated
making sure the mounting screws are tight.
UPPER.
PUMP SHAFT
THE TANG Off THE END
OF THE UPPER SHAFT
FITS INTO THE SLOT IN
THE LOWER SHAFI
~
PULLEY
Engines & Generators
19
SCREWS
(}11
FASTENS
rHE ·
ilJ
UPPERPUMP
BODYTOmE
LOWER PUMP
THE O·RING!GASKET .
ONLY NEtos TO BE
REPLACES IF IT SHOWS
SIGNS OF AGING.
DUAL PUMPS
ASSEMBLY