Download Westerbeke 20B TWO/30B THREE Technical data

AHernator Assembly
Reassemble the alternator assembly in the reverse order of disassembly giving care to the following:
1. The rear bearing has an eccentric groove. Install the snap ring so that its projection fits in with the deepest
part of the groove.
2. When installing a new rear bearing, press-fit the bearing with its groove facing the slip ring side.
3. When press fitting the rear bearing into the rear
bracket, heat the bracket.
CAUTION
Pass a wire through the small hole in the rear
bracket to lift the brushes before installing the
rotor to the rear bracket. Remove the wire after
the rotor is installed.
AHernator Installation
lifting Brushes
Install the alternator in the reverse order of removal.
1. When Installing the support bolts, Insert the
spacer In place using the following procedure:
a. Push In the support bolts to the normal position.
(Leave the nuts removed from the bolts.)
b. Push the alternator backward. Measure the
clearance between the alternator rear bracket
and gear case bracket to determine the number
of spacers to be inserted into the clearance (0.2
mm maximum).
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Westerbeke Engines