The Phillips company’s latest Qwik Tech Tips newsletter details plug and socket preventive maintenance steps in trademark quick-and-simple format. The newsletter, in its fifth year, digs into lighting-system maintenance monthly, and archived editions are accessible via this link, offering quick studies on a bevy of topics.
Phillips-recommended PM steps: **Clean plug and socket connectors with a socket brush and water (NO SOAP), then apply dielectric grease to all pins to keep moisture out. **To safeguard against uneven wear/pin degradation, “rotate electrical assembly plug from the tractor to trailer side, or replace the plug inserts at the front of the plug.”
Given the growth in state use of magnesium and calcium chorides in road de-icing, plug-and-socket maintenance where the tractor connects to the trailer is getting more critical, Phillips says. The chemicals have been “found to be highly corrosive to brass and copper, which are the base materials for the contact pins used in plugs and sockets.”
Follow basic PM steps, Phillips recommends, for 7-way electrical connections “every 3-6 months or more often” in areas where you’re exposed to magnesium or calcium chlorides excessively.
Using a foam socket seal can add “protection against corrosion creeping into the trailer
harness via the 7-way connection,” Phillips says.
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