Section III. MAINTENANCE OF POWER UNIT ELECTRICAL SYSTEM
Make sure generator set is shut down before performing the maintenance
procedures described in this section. Serious injury or death by electrocution
can result if procedures are performed with power on.
Adapter Plate Assembly Repair. (See figures 5-2 and 5-3.) The adapter plate assembly may be
repaired by replacing defective components or by repairing faulty wiring harnesses.
Disassemble only to the extent necessary to replace defective component(s).
Open generator set curbside front side panel.
Disconnect P3 power/control cable and P4, P7 low fuel cable from adapter plate assembly.
Disconnect ground cable from adapter plate assembly GROUND.
Disconnect J3 wiring harness (1, figure 5-2) from generator set load terminals and terminal
board TB2 (2). Remove four screws (3), four flat washers (4) and four self-locking nuts (5)
from J3 connector.
Remove three bolts (5.1), three flat washers (5.2), three lockwashers (5.3), and three nuts
(5.4) that secure the surge protectors (5.5) to the adapter plate (6). Pull J3 wiring harness out
of adapter plate (6). Remove EMI gasket (7) and connector cover (8).
Disconnect J4 wiring harness (9) from terminal board TB2 (2). Remove four screws (10), four
flat washers (11) and four self-locking nuts (12) and pull J4 wiring harness out of adapter plate
(6). Remove EMI gasket (13).
Disconnect all wires from terminal board TB2 (2). Remove two screws (14) and remove
terminal board and marker strip (15) from adapter plate (6). If necessary, unscrew two
terminal screws (16) and remove jumper (17).