TM 9-6115-669-13&P
4.30 AUXILIARY CONTACTORS K20 AND K21 MAINTENANCE.
This task covers:
a.
d.
Removal
b.
Inspection c.
Test
Installation
General Mechanic’s Tool Kit
(item 2, appendix B)
Automotive Fuel and Electrical System Repair, Tool
Bit (item 3, appendix B)
DC power supply, 220 VDC
Reference
Shut down Generator Set
150 kW, paragraph 2.8.1.
None
T w o
WARNING
The Generator Sets 150 kW produce lethal voltages.
Turn off power to the EPP III or Generator Set 150 kW before
performing any installation, removal, disassembly, or
assembly work.
Wear protective gloves when performing any work on main
assemblies of the EPP III.
CAUTION
Label all cables before removing electrical or electronic assemblies or
components.
NOTE
This procedure is the same for auxiliary contactors K20 and K21.
a
Remove stanchion by PDU (1, figure 4-44).
b.
Open access door (2) and secure with prop (3).
c. Install stanchion.
d.
Record labeling and position of cables of auxiliary contactor (4), loosen screws, and disconnect
cables.
e.
Use a screwdriver to push locking element (6) on auxiliary contactor (4) in direction of arrow,
tilt auxiliary contactor upward, and remove from mounting bar (7).
Visually inspect for damage or discoloration due to heat.
4-100
