MAINTENANCE OF GENERATOR AND RECONNECTION ASSEMBLY
11-1. GENERAL. The generator is a single-bearing,
brushless type with integral exciter. It is directly driven
from the engine through a disc coupling. The bearing
requires no lubricant and can be replaced without removing
either the engine or generator. The excitation system
consists of an exciter and voltage regulator. The excitor
has a rotating armature and rotating rectifier. The
reconnection box assembly provides access for
reconnecting generator phase windings through current
transformers. Windings of each phase may be connected
in series or parallel on buss bars. Reconnection box also
provides a means of converting the generator set from
120/208 volt to 240/416 volt operation.
11-2. RECONNECTION BOARD AND BUSS BARS
REMOVAL AND REPLACEMENT.
Remove front panel (12, figure 11-1,
sheet 1) by removing screws (1),
washers (2 and 3), and hook (4).
Remove panel support (13).
Disconnect, tag, and remove harness
(71) and (73) and power cables (74).
Remove buss bars and jumper bars (38
thru (45) by removing their attaching
Remove reconnection board assembly
(15, figure 11-1, sheet 2) by removing
the 14 screws (16), nuts (19), and
washers (17 and 18).
Replace reconnection board assembly
(15) by replacing the 14 screws (16),
nuts (19), and washers (17 and 18).
Replace buss bars and jumper bars (38
thru 45, figure 11-1, sheet 1) by replacing
their attaching hardware.
Replace harness (71 and 73) and power
Replace panel support (13).
Replace front panel (12) by replacing
screws (1), washers (2 and 3), and hook
Test. Using an ohmmeter test limit
switch S120 (14, figure 11-1, sheet 2) for
continuity. Switch should have a distinct
clicking action when operated from one
position to another. Replace switch if no
continuity is indicated.
Remove limit switch S120 (14) by
removing locknut and washer that
secures switch to reconnection
Install new switch on reconnection
board (100) and secure locknut
11-3. CURRENT TRANSFORMER REMOVAL AND
Remove reconnection board and buss
bars, par. 11-2 a.
Remove current transformer assembly
(22, figure 11-1, sheet 2) by removing
ten screws (20) and washers (21).