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Labor Day Putting down your wrenches or time for
MORE wrenching? 
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| | | | Joined: Jan 2013 Posts: 31 New Guy | | New Guy Joined: Jan 2013 Posts: 31 | The light switch on my 1951 1/2 ton pickup works intermittenly. If I giggle the shaft I can get it to work. I removed the shaft and cleaned it with steel wool and added a thin coat of dielectic grease but it still will lose contact if I play with it. Do I need a new switch? | | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 |
Di-electric grease decreases conductivity. It might not have caused any harm. The shaft usually turns a moving contact inside the switch - the shaft is not a conducting part, I think. Just rotating the knob/shaft might help to clean the contact surfaces of the rheostat.
Contact cleaner sprayed on the non-greased contact surfaces in the rheostat usually helps.
| | | | | Joined: Feb 2002 Posts: 12,029 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Feb 2002 Posts: 12,029 | the shaft has nothing to do with intermittent operation, it's all in the worn contacts inside, if it's dash lights that are the problem, cleaning the wire wound rheostat on the front of the switch might help, if it's the park/head lights, get a new switch
Bill | | |
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