Section III. DIRECT SUPPORT MAINTENANCE PROCEDURES
3-7. GENERAL MAINTENANCE PROCEDURES.
a. Electric Motor and Generator Repair. Repair electric motors and generators in
accordance with TM 5-764.
(1) General. Wires on laundry units, whether run individually or in a harness, are color
coded. Be sure to tag all wires upon disconnection to ensure proper installation.
(2) Inspection. Inspect insulation for cracks or frayed material. Pay particular attention to
wires passing through holes in the frame or over rough metal edges. If wire is cut or broken and the
break in the wire is exposed, the wire must be repaired as in step (4) below. If the break in the wire is
in a harness, conduit, or inaccessible area, replace the wire as in step (5) below.
High voltage is present on this equipment. Do not perform
continuity (resistance) tests with power on. Death or serious
injury may result.
Testing for broken wires. Set multimeter to low ohms scale and zero the meter. Isolate
the wire to be tested by disconnecting at least one end. Connect the multimeter probes to
each end of the wire. A measurement of zero ohms indicates continuity (wire is
unbroken). A measurement of high resistance (infinity) indicates no continuity (wire is
defective). If the wire is defective, repair or replace it in accordance with step (5) or (6)
Testing for grounded wires. Set multimeter to high ohms scale and zero the meter.
Isolate the wire to be tested by disconnecting both ends. Connect the multimeter probe
to frame ground, and connect remaining probe to either end of the wire. A measurement
of high resistance (infinity) indicates no continuity (wire is not grounded). A
measurement of low resistance indicates a grounded wire (wire is defective). If the wire
is defective, replace it in accordance with step (6) below.
Repair. Use electrical repair kit or shave the insulation on the wire to expose 1/2 inch
(1.27 cm) of bare wire at both ends of the break. Twist the bare wire together and solder
the connection. Cover the break with electrical friction tape. Be sure to leave no bare
wire exposed. If a terminal lug breaks off a wire, replace it with an exact duplicate.
Replacement. Replace a wire by disconnecting it from the component or components to
which it is attached and remove the wire. Connect a new wire to the component or
components. If a broken wire is part of a harness, disconnect the wire at each end and
tape the loose ends with electrical tape. Install a new wire and attach it to the outside of
the wiring harness.
c. Bearings. For cleaning and inspection of anti friction bearings, refer to TM 9-214.