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  1. #1
    Co-Pilot Aerial's Avatar
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    Magnetic Plug - Rotax 912UL

    Can anyone tell me what is the size of the Torx bit required to fit the magnetic plug on a Rotax 912UL please? Also, I gather that there are new(er) designs of plugs with other driving arrangements. Has anyone got the details of these too?


  2. #2
    Co-Pilot Rodent's Avatar
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    Mines Hex, 19mm spanner I think.
    ​Nick....

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    Aerial (02-06-20)


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    Co-Pilot Antoni's Avatar
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    Quote Originally Posted by Aerial View Post
    Can anyone tell me what is the size of the Torx bit required to fit the magnetic plug on a Rotax 912UL please? Also, I gather that there are new(er) designs of plugs with other driving arrangements.
    Apologies for a weak response; a full set of cheap Torx bits are... cheap... and they don't take up much storage room between being made use of.

    Re other designs, a bit of imagination could be used where the correct tools are not at hand.

    Of course this would not be bodging - heaven forbid - but having been forced to use some imagination, it has helped me in the past.
    "The single biggest problem in communication is the illusion that it has taken place" - G.B.S.

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    Aerial (02-06-20)


  6. #4
    Co-Pilot Aerial's Avatar
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    Thanks both. I don't have any other use for Torx bits so before I go shopping and get a small set of 'popular sizes' it wouldn't surprise me if the Rotax magnetic plug was an in-between size, hence the question. My plug is looking a bit mangled from years of use and if I get it out I'll be getting one of the more modern types like Rodent above has come across.


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    Co-Pilot Blade 582's Avatar
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    Good Afternoon all, if when trying to get it out, you find it totally rounded, as someone at our strip managed to do, to someone else's aircraft. As always, Simon Worthington at Eccleston Aviation, came up with the solution. A set of Knipex grips, readilly available. The Plug will need to be replaced afterwards, but it will come out.

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    Aerial (05-06-20)


  9. #6
    Co-Pilot Aerial's Avatar
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    That looks a bit of a brutal way to get a mangled plug out but it's a jolly good suggestion I may have to use, thanks!

    I'd still like to try the correct size Torx bit though and if I don't get it or the plug is too mangled, I'll try the Knipex trick.

    Has anyone any definite clue where to find the correct size please? My engine Line Maintenance Manual doesn't have it.


  10. #7
    Trainee Pilot _Red_'s Avatar
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    TX40, go carefully as the heads are quite soft.

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  12. #8
    Trainee Pilot Mike Calvert's Avatar
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    For anything with threads that are a bit stuck, a wee spray with Plus-Gas, leave for a bit, repeat, and then go easy on the wrench, and it works wonders. When it comes to tools, I have learnt over the years to suck it up and pay for the GOOD tools - they last far longer, get far better results, and way less likely to cause unwanted damage - definitely worth it in the long run!

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    Aerial (05-06-20), Randombloke (07-06-20)


  14. #9
    Co-Pilot Aerial's Avatar
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    Thanks a million Red, just what I needed!

    Those are a couple of very good tips Mike. I had quite forgotten Plus-Gas, I used to use it many years ago when I had to do my own car maintenance. I quite agree with you about using good tools. As I don't do much spannering these days because the aircraft doesn't need to be taken to bits every weekend like some cars I've had, some middle of the road tools will do quite nicely.

    It was just this one magnetic plug that had been worn over the years that I have had trouble with. Hopefully, I'll get it out soon and without much fuss using the right size Torx bit and the tips I've had here. Thanks everybody.


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    Co-Pilot Blade 582's Avatar
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    Hope it works well for you Aerial


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