Table 5-6. Automatic Control Module Troubleshooting (Organizational Level)-Continued
TEST OR INSPECTION
5. ADDITIONAL GENERATOR OUTPUTS DO NOT CONNECT LESSER PRIORITY FEEDER BREAKERS.
Using a multimeter check for 24V DC at coil of LR2, 3 or 4 relays.
If present, refer to testing and replacement of LR2, 3 or 4 relays to next higher level of maintenance.
If absent connect a jumper from TB4-1 to R2 diode pack terminal 5 for checking LR2, or from TB4-1 to R2
diode pack terminal 2 for checking LR3.
If critical load is activated, refer testing and replacement of BR2, BR3 or BR4 relay to next higher level of
If jumper does not correct problem, remove jumper and refer testing and replacement of R2 diode pack
assembly to next higher level of maintenance.
GENERATOR OUTPUT CONNECTS TO FEEDER LINES BUT FEEDER LINES 2, 4, 6 OR 8 ARE INOPERATIVE.
Using a multimeter, check for 24V DC at LRTD1, 2, 3 or 4 whenever LR1, LR2, LR3 or LR4 is energized
If voltage is present refer testing and replacement of LRTD relays to next higher level of maintenance.
Section V . HOUSING KIT
GENERAL. The housing kit encloses the
generator set and is removable to provide access for
overhaul or replacement of major components. The
housing is attached to the base assembly and the
support frame assembly to provide a rain proof
enclosure, and prevent rain, snow, or sand from entering
the interior of the housing. With the housing kit
installed, the generator set can be operated at ambient
temperatures from 125F (52C) down to -25°F (-32C).
The housing doors allow access to the inside of the
generator set. The shutter assembly at the radiator end
of the generator set is automatically controlled and
generator set. Major components of the housing kit
include panels, doors, shutters, electrical harness,
exhaust breather, and necessary hardware items for kit
Louver control relays K60 through K63, and fuses F61
thru F63 in External Power Box (figure 5-4) louver motor
pilot switches S60 through S63, and louver motors B10
through B13 (capable of two way operation) control the
four louver assemblies. When the engine starts each
louver control relay energizes and 24 V DC is applied,
by way of the louver motor pilot switches, to the louver
motors and the louvers