Hobart 60CU24, Operation And Maintenance Manual With Illustrated Parts List, Page: 126 / 234

OM-2098C / Operation and Maintenance Manual
60CU24 / Series 500060C / 400 Hz. Generator Set
April 01, 2005 Chapter 3-1
Page 2
5 4 3 2 1
1. Exciter Core Flange
2. Exciter Core Lamination
3. Banding Glass Tape 4. Diode Mounting Plate
5. Silicon Diode
Exciter Armature
Figure 2
The exciter armature covered by the manual is mounted on the rear portion of the main generator
armature shaft which extends rearward, beyond the rear generator bearing, into the exciter housing (See
Figure 1). Because of its location on the shaft, the exciter armature must be removed for rear main
bearing replacement. The exciter armature has two M10-1.5 tapped holes in it’s diode mounting plate to
accommodate pulling it off the shaft.
Since the removal and installation of exciter armatures can be rather complicated, this manual has been
prepared to assist mechanics in the operation. It may be necessary to remove the exciter armature
several times for bearing replacement during the life of a generator set.
2) Exciter Armature
The exciter armature used in this generator set consists of a revolving winding assembly on a laminated
core, a rectifier assembly (diode mounting plate with diodes), and a mounting flange. The flange, core,
and diode mounting plate are bolted together to make the complete exciter armature.