Master Lever Switch problems

[leinadair]

Lately (on startup from Niagara Falls Intl. NY) My Rebel Amphibian Master (lever/toggle switch) would not engage unless I move the lever/toggle ever so slightly down or up.

It definitely needs replacement as I fear over time the contacts inside the switch may have began to burn out with use. I have flown over 100 hrs since I bought the A/C over a year ago. The A/C now has a total of 320 hrs.

I believe the Master is a SPST (ON/OFF) . I reached behind the panel and found/felt only one heavy wire connected to the Master switch. The switch body is definitely larger than all other lever/toggle switches. I believe this switch completes the Ground (negative) circuit to the Solenoid relay which then energizes the (HOT) side of the bus? The other terminal has no leads coming out and must somehow be the ground to the BUS through the switch body ?

Master Breaker is rated for 35 amps. Aircraft Spruce has a Lever switch rated at 20 amps for 12/24 volts and looks sturdy enough.

Any advice ?, Do I really need a 35 amps (or more) rated switch? If so where can I find one ?. Will a good 20 amp switch do the trick? Would it be better that the switch have the same military specification as the certified airplanes? Or does it really matter?

Regards

Dan (0178 R) GGNB




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