ELECTRICAL GENERAL MAINTENANCE INSTRUCTIONS - CONTINUED
ELECTRICAL SYSTEM COMPONENTS AND WIRING - CONTINUED
Socket contacts: Hold connector with openings pointed slightly downward, if possible. Spray compound into
socket openings. Wipe off any excess compound with a lint-free cloth.
Do not use water-displacing corrosion-preventive compound on the external surface of an electrical connec-
tor. Compound is too light and will not give the protection needed to keep moisture out of the connector.
External surfaces: Spray a thin coat of water-displacing corrosion-preventive compound on all external surfaces of
the clean connector set. Make sure the area where the connector set comes together is completely covered.
Installing Electrical Connectors.
Look at connectors for broken, missing or pushed-in contact before making any connections. If connector is bad,
When installing connectors on large harnesses, use an assistant to help align the mating ends of the cable. Ensure
contacts and key washers line up. Tighten twist-snap-type connectors until a click is heard. Tighten screw-on-type
connectors until the connector is tight. Tighten ratchet-type connectors until colored aligning marks line up.
Tighten connectors by hand only.
Wipe the outer surface of the connector with a lint-free cloth dampened with cleaning compound.
Connecting and Disconnecting Connectors.
Look for broken, bent or missing pins when disconnecting or connecting receptacles and connectors. If you find
any bent pins, tell your supervisor. Look at harnesses for cuts, kinks or torn or burned insulation. If insulation is
bad, replace harness.
If connectors cannot be removed by hand, use conduit-style, slip-joint pliers with plastic jaw inserts to remove
them. When installing connectors on larger harnesses, use an assistant to help align the mating ends of the cable.
Ensure pins and keyways line up. Tighten twist-snap-type connectors by hand only until a click is heard. Tighten
the screw-on-type connectors by hand only until the connector is tight.
Put protective caps and plugs on all connectors when they are removed to keep pins from being damaged and to
keep out dirt, dust or grease. When connectors are being put on, take off all caps and plugs.
Before removing harnesses that require being placed over and under components during installation, identify the
routing to ensure proper installation.
If harness routing can be reached, route and tag twine where harness branches are laying before pulling harness out
of place for removal.
If harness routing cannot be reached, tie twine to ends of harness branches. Twine should be longer than harness.
Pull harness out until twine can be tagged and untied from harness branches.
Install harness either by feeding harness branches through where twine was placed or by tying tagged twine to mat-
ting harness branch and pulling harness into place with twine. Remove twine.
Ensure routed harness and branches are not twisted or sticking up where they can rub the opposite frame when the
machine is being articulated.
Routed harness and branches should not be lying loose against any rough surface that could cause chafing. Use
additional tiedown straps as required to keep harness in position.
If it is necessary to articulate the machine to remove or install wiring harnesses, ensure harnesses are clear of mov-
ing parts that could damage harnesses or equipment.