Westerbeke W-46 - Page 55

LUBRICATION·SYSTEM
d. Rotor Shaft Diameter.
Inspect the shaft for
damage, and check it for
wear by ~easuring ~ith a
micrometer. Determfne the
available clearance of the
shaft in the pump body from
the micrometer readings; if
I
the service liiJrl t in terms
of clear artce value is
exceeded or if the shaft is
in badl:v-damaged condition,
replace~ent is necessary.
2.3 Reassembly
a. Install inner rotor to pump.
shaft with pin.
b. Place pump shaft in pump
case. Install pump drive
gear to the shaft with pin.
c. Place outer rotor in pump
case, and install pump case
cover complete with gasket
and oil strainer.
(NOTE: If pump shaft or drive
gear has been replaced, a new
pin hole must be made by dril-
ling through the' gear mounted
on the shaft.)
Specifications
Item
Standard
Rotor
12.6~:~
shaft
(0 496 +0.
0024
)
diameter
0
+0.0016
Shaft to
0.040...:.0.085
body
(0.00157-0.00335)
clearance
Unit: mm (in.)
Service
..
limit
d. After replacing the cover,
check to be certain that the
match marks are correctly
indexed. If the cover is in
the wrong position relative
to the case, the pump will
not draw in oil. Tighten
the bolts after checking to
be sure that the marks are
correctly matched.
, ·Fitting. cover-to-case by m~t?_t .:ng marks
e. After reassembling the pump complete with its strainer, immerse
the strainer in a pool of oil and run the drive gear by hand to
make certain that the pump is capable of sucking oil in.
I"Wj'!;!~!';~!';~
53