Drumstick Posted January 23, 2017 Report Share Posted January 23, 2017 Is there a common replacement part for the fuel pump, pitot heat, landing light and Nav light switches for a 1965. My switches are very worn. Quote Link to comment Share on other sites More sharing options...
Marauder Posted January 23, 2017 Report Share Posted January 23, 2017 Is there a common replacement part for the fuel pump, pitot heat, landing light and Nav light switches for a 1965. My switches are very worn. Do you know if they are breaker type switches? If they are, it will depend on how they are mounted and attached to the buss bar (if at all). Have you pulled any of them? If not, I would try to get the information off of them or pull them to make sure you understand what is needed. Here is what the folks have at Aircraft Spruce:http://www.aircraftspruce.com/catalog/elpages/pbcircuitbrkr2.php?clickkey=4681Sent from my iPad using Tapatalk Quote Link to comment Share on other sites More sharing options...
N6758N Posted January 23, 2017 Report Share Posted January 23, 2017 28 minutes ago, Drumstick said: Is there a common replacement part for the fuel pump, pitot heat, landing light and Nav light switches for a 1965. My switches are very worn. Most of the switches you mention above are circuit breaker type switches, Aircraft spruce should have more or less an exact replacement as Chris mentioned above. 1 Quote Link to comment Share on other sites More sharing options...
yvesg Posted January 23, 2017 Report Share Posted January 23, 2017 My landing light switch was replaced a year ago. Came from Aircraft Spruce. Was around $300 if I recall right. Yves Quote Link to comment Share on other sites More sharing options...
carusoam Posted January 23, 2017 Report Share Posted January 23, 2017 (edited) +1 '65C... Switches are mechanical combination of circuit breaker and switch in one. The oft used landing light wears out before the lesser used ones. Look for the instruments panel cover above the switches to droop. When droooping from loose, missing or old vibration mounts, contact with the switches and there colored ID covers will help turn them off automatically... when swapping out with new CB switches, available from AS, know there is a bus bar (long piece of brass) behind them making it a challenge to just change one at a time. getting them out is a bit easier from the access panels on the outside. If they aren't glued in place... How's my memory working today? Best regards, -a- Edited January 23, 2017 by carusoam 1 Quote Link to comment Share on other sites More sharing options...
flyhigh603 Posted January 25, 2017 Report Share Posted January 25, 2017 I called Lasar about these exact switches and the wanted $175 ea !!! yes each !! i ve been looking around for used sets but very hard to find.... Quote Link to comment Share on other sites More sharing options...
N201MKTurbo Posted January 25, 2017 Report Share Posted January 25, 2017 (edited) The Klixon 7270-5 series circuit breakers are expensive but at least they are available. You complain because they only lasted 50 years? Edited January 25, 2017 by N201MKTurbo Quote Link to comment Share on other sites More sharing options...
carusoam Posted January 25, 2017 Report Share Posted January 25, 2017 This is when you realize there is a CB club and why so many people have joined it. The CB switches are expensive and changing them out usually only makes sense if they are worn and don't work properly. Changing them all out while you are in there makes sense when you have excess AMUs on hand. There are two types of CBs.... circuit breakers and cheap b*stards, only one is the prestigious club for the finest of Mooney owners... CB switches wear a tiny bit each time they are operated. The more current they are switching, the more sparks are flying internally. There is a way to test the switch, but that starts to cost more than the replacement. The standard way to know when a switch is worn is by it's feel. A good solid over-center click of a new switch is a good sign. A soft barely feel it click is not so good. Know that the warmer the switch is, the softer the click becomes. This is the usual PP thoughts. Not a mechanic or CFI. Best regards, -a- Quote Link to comment Share on other sites More sharing options...
1964-M20E Posted January 25, 2017 Report Share Posted January 25, 2017 Whats wrong with the Tyco W31 series switches? Most of the ones you will need are about $32.00 if they do not match up replace all of them for less than 2 of the others. If I remember correctly there is something in the Regs that allows you to replace these CBs and other electrical components like rheostats with a different model but with same form and function as the original. tycoBreakers.pdf Quote Link to comment Share on other sites More sharing options...
cctsurf Posted January 25, 2017 Report Share Posted January 25, 2017 1 hour ago, 1964-M20E said: Whats wrong with the Tyco W31 series switches? Most of the ones you will need are about $32.00 if they do not match up replace all of them for less than 2 of the others. If I remember correctly there is something in the Regs that allows you to replace these CBs and other electrical components like rheostats with a different model but with same form and function as the original. tycoBreakers.pdf My sentiments exactly, however, you would need an A&P to sign it off... Shouldn't be that big a deal. Aircraft Spruce's website states "Used as original equipment in Beech, Cessna and Piper aircraft." 1 Quote Link to comment Share on other sites More sharing options...
mooniac15u Posted January 25, 2017 Report Share Posted January 25, 2017 2 hours ago, flyhigh603 said: I called Lasar about these exact switches and the wanted $175 ea !!! yes each !! i ve been looking around for used sets but very hard to find.... Have you checked with @Alan Fox or @acpartswhse? They are the local used parts suppliers. Quote Link to comment Share on other sites More sharing options...
Andy95W Posted January 25, 2017 Report Share Posted January 25, 2017 1 hour ago, 1964-M20E said: Whats wrong with the Tyco W31 series switches? They don't fit into the existing holes because they interfere with the tubular steel at the bottom of the instrument panel. I tried to do it back in 1995. Quote Link to comment Share on other sites More sharing options...
yvesg Posted January 25, 2017 Report Share Posted January 25, 2017 On 2017-01-23 at 0:58 PM, carusoam said: +1 '65C... Switches are mechanical combination of circuit breaker and switch in one. The oft used landing light wears out before the lesser used ones. Look for the instruments panel cover above the switches to droop. When droooping from loose, missing or old vibration mounts, contact with the switches and there colored ID covers will help turn them off automatically... when swapping out with new CB switches, available from AS, know there is a bus bar (long piece of brass) behind them making it a challenge to just change one at a time. getting them out is a bit easier from the access panels on the outside. If they aren't glued in place... How's my memory working today? Best regards, -a- I did change my landing light switch last year. Anthony is right about the bus bar. The trick is to remove the hex nut facing the pilot on all the switches that share the same length of bus bar (from memory I think they were 4), push the assembly of switches behind the panel, replace the bad switch, pull all switches back in their respective holes and reinstall the hex nuts. My mechanic gladly signed it off in the log book after he inspected my work. Yves PS This is the one I used: http://www.aircraftspruce.com/search/search.php?s=7270-5-20 1 Quote Link to comment Share on other sites More sharing options...
1964-M20E Posted January 25, 2017 Report Share Posted January 25, 2017 Well here is a place that ahem them for less than Aircraft Spruce http://www.peerlesselectronics.com/store/products/7270%2d5%2d20.html Quote Link to comment Share on other sites More sharing options...
Jerry Pressley Posted January 30, 2017 Report Share Posted January 30, 2017 if you will text me a photo to 4232313491 I will send photos of what I have a few hundred Quote Link to comment Share on other sites More sharing options...
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