Exciter Installation - Marathon Electric MAGNAMAX Installation, Operation And Maintenance Manual

mounting cap screws and Belleville washers.
(Figure 6-69 and 6-72.)
Torque to 4 ft-lb. (5 N-M).
Figure 6-69
5. Route and secure PMG moving parts.

EXCITER INSTALLATION

1. Attach a wire to the main rotor leads and
feed the wire through the armature bore and
the lead hole in the aluminum standoff plate.
On larger exciters, it will be helpful to
install a guide pin in the end of the shaft to
support the armature while fishing the rotor
leads through. (Figure 6-70.)
Figure 6-70
Align the key in the armature bore to the
keyway in the shaft. Slide the armature on
the shaft while feeding the main rotor leads
through the lead hole in the aluminum
standoff plate. (Figure 6-71.)
Figure 6-71
Insert the cap screw and Belleville washer
(Figure 6-72.) through the mounting hole in
the aluminum standoff plate and secure to
the shaft (Figure 6-73). Tighten the cap
screw until the armature seats on the shaft.
Torque to 84 lb.-ft (114 N-M).
Figure 6-72
Figure 6-73
2. Observe the polarity markings and
connect the main rotor leads to the rectifier
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