TM5-6115-593-34
NAVFAC P-8-631-34
TO-35C2-3-463-2
CHAPTER 10
MAINTENANCE OF INTERCONNECTING ELECTRICAL HARNESSES
AND PARALLEL CABLE ASSEMBLIES
Section I. MAINTENANCE OF INTERCONNECTING ELECTRICAL HARNESSES
10-1. GENERAL. Electrical interconnection of control
devices and indicators is accomplished through wiring
harnesses. Wires in the harnesses are bundled and
secured to prevent unnecessary movement and chafing,
and to conserve space.
10-2. REPLACEMENT. Replace the interconnecting,
external power box, AC-DC control box or control cubicle
harness if 30 percent of the wires in the assembly are
defective. Refer to FO 10-1 through 10-21.
WARNING
SET MAINTENANCE LOCKOUT SWITCH TO
LOCKOUT. DISCONNECT NEGATIVE CABLE
FROM BATTERIES. REMOVE EXTERNAL
POWER BY OPENING CB101 (120V
RECEPTACLE BREAKER).
a.
Removal. Remove harness assembly as
follows:
(1)
Tag all wires, connectors, and terminal
boards.
(2)
Disconnect harness connectors from
receptacles by unscrewing connectors in
counterclockwise direction.
(3)
Remove all clamps that secure the
harness.
b.
Repair. Refer to Operator/Crew Organizational
Maintenance manual for repair procedures.
c.
Replacement. Replace harness as follows:
(1)
Secure harness with clamps.
(2)
Make necessary connections.
(3)
Remove wire tags.
Section II. MAINTENANCE OF PARALLEL CABLE ASSEMBLIES
10-3. GENERAL. There are two parallel cable assemblies,
a reactive load compensation cable and a governor circuit
cable, used to interconnect sets for parallel operation.
10-4. INSPECTION.
a.
Inspect connectors for damaged threads and
bent, loose, or missing pins. Inspect wiring for
defective insulation.
b.
Perform continuity check, using ohmmeter
between connecting points in the cable. Use
wiring data in figure 10-1. Check for short
circuits between connector pins of the same receptacle.
10-5. REPAIR. If a wire is broken from a connector,
resolder and reassemble.
10-6. REPLACEMENT. To remove parallel cables,
unscrew connectors from receptacles on generator set AC-
DC control panel to replace parallel cables, unscrew dust
caps on AC-DC control panel receptacles, labeled
GOVERNOR PARALLELING CIRCUIT and REACTIVE
LOAD COMPENSATION. Attach parallel cables to these
receptacles at both generator set AC-DC control panels.
10-1
