Westerbeke W-46 - Page 60

COOLING SYSTEM'
d. Check the pump shaft bearing journals for wear.
shaft if the journals are excessively worn.
Replace the
e. Check the surfaces of the pump case where the bearings are
fitted for excessive wear or damage. Replace the case (or the
pump assembly) if those surfaces on the case are found in bad
condition.
(NOTE: Upon assembling the water pump, turn it by means of the
pulley, making certain that the pump rotation is smooth without any
signs of binding.)
4.3 Reassembly
a. Install bearings (2) on pump
shaft (1) and install the
shaft in pump case (4).
b. Install snap ring (5) in
pump case on pulley side.
5
c. Install larger half of unit
seal (7) in the pump case
and smaller half of seal in
the impeller (8); screw the
1
impeller onto the shaft.
d. Install cover (9)
3
e. Install spacer (3) onto the
pulley side of the shaft, 2
position the woodruff key in
the shaft keyway, and
install the pulley onto the
shaft; fasten the pulley
to the shaft with the lock-
washer and water pump shaft
nut.
f. Rotate the shaft to check
that the impeller does not
interfere with cover.
g. Apply water pump grease thru the zerk fitting. Capacity-20cc
(1.2 cubic inches). Do not overfill.
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