Section III. MAINTENANCE PROCEDURES
Generator Set. Refer to TM 9-6115-641-10.
Power Plant. The maintenance functions that the Maintenance Allocation Chart authorizes the operator to
perform are the preventive maintenance checks and services listed in table 2-2 and the replacement of indicator lamps
located on the switch box. Perform the following steps to replace ON, ON-LINE, and SYCHRONIZING indicator lamps:
Unscrew lens from lamp housing and remove lamp from lens (ON and ON-LINE lamps) or housing
Install new lamp in housing or lens and screw lens on housing.
MISSION. In the event that the right front and rear synchronizing bulbs do not light during the transfer procedure
and the mission cannot be terminated to check the bulbs as described in fig. 3-3, the bulbs will have to be removed as
follows with one set running:
Shut the on coming generator down, to remove power from the internal synchronizing circuitry.
Remove the bulbs and replace both with new, if available and proceed with the transfer.
If no spare bulbs are available, swap the left front bulb with the burned out bulb and proceed with the transfer.
Failure to maintain the rear bulb functional will allow the switch box to transfer load at any time, throwing both
generator sets off line.
Change 3 3-9/(3-10 Blank)