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Bendix Ignition Switch Rebuild



 
 
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  #1  
Old November 27th 08, 08:49 PM posted to rec.aviation.owning
Mike Spera
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Posts: 220
Default Bendix Ignition Switch Rebuild

I have had my TCM-Bendix 357210-1 ignition switch (1974 Piper Cherokee
140) apart twice in the last 14 years to clean up the contacts. I
remember once seeing a rebuild kit consisting of the back plate and the
3 triangular pressed metal contacts. Might have been from an old
Wag-Aero catalog. I cannot seem to find such a beast. Given the price
for a new switch hovers around $275 (for a $10 part), I was looking to
see if there were any less expensive alternatives to buying a new one. I
checked several parts houses and everyone has the switch but no rebuild
kit. Was I dreaming?

Thanks for any info.
Mike
  #2  
Old November 28th 08, 01:50 AM posted to rec.aviation.owning
[email protected]
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Posts: 1,130
Default Bendix Ignition Switch Rebuild

On Nov 27, 12:49*pm, Mike Spera wrote:
I have had my TCM-Bendix 357210-1 ignition switch (1974 Piper Cherokee
140) apart twice in the last 14 years to clean up the contacts. I
remember once seeing a rebuild kit consisting of the back plate and the
3 triangular pressed metal contacts. Might have been from an old
Wag-Aero catalog. I cannot seem to find such a beast. Given the price
for a new switch hovers around $275 (for a $10 part), I was looking to
see if there were any less expensive alternatives to buying a new one. I
checked several parts houses and everyone has the switch but no rebuild
kit. Was I dreaming?

Thanks for any info.
Mike


Cessna sells that kit. Not expensive. But watch: Some kits are
for the Bendix switch and some are for the ACS (Aircraft Spruce house
brand) that Cessna often used and still does. The backplate screw lug
spacing is different so the kits are different. And some Bendix
switches have an AD against them; if yours is one that misbehaves
according to the AD, it's junk anyway. With the engine idling, shut
the mags off and try to turn the switch past the OFF position while
the prop is still turning; if the engine starts firing again you have
a bad switch. The bad ones had the OFF stop in the wrong place or
something. We had one years ago.

Dan
 




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