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Thread: How find shop inspect my 912ULS gearbox?

  1. #11

    Join Date
    Sep 2012
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    San Francisco
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    112

    Default Re: How find shop inspect my 912ULS gearbox?

    If anyone is going this route and pulling your own gearbox to send it in to a factory approved center for the 600 hour maintenance, there are a few gotchas you need to be aware of. First are the somewhat expensive tools required and their leadtime. The 877660 Rotax gearbox puller is over $500 and is on at least a 30 day backorder now. Thankfully Aircraft Spruce has one for about $100 that is an automotive slide hammer with a Rotax adapter bracket. If you are going to pull the drive gear off and include that in your maintenance, you need the 877445 41mm socket ($300), an 845430 lockwasther, and lotcktite 648 to put it back on. Note that Aircraft Spruce also has a cheap alternative to the 41mm socket.

  2. #12
    Senior Member efwd's Avatar
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    Jun 2015
    Location
    Yorba Linda, CA
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    2,832

    Default Re: How find shop inspect my 912ULS gearbox?

    That little nugget of info is very timely. Appreciate it.
    Guess Ill schedule with the mechanic.
    Eddie Forward
    Flying
    SS7, 912iS, Garmin G3X

  3. #13
    Senior Member
    Join Date
    Nov 2019
    Location
    Leavenworth WA
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    635

    Default Re: How find shop inspect my 912ULS gearbox?

    What Eddie said!! Thank you for the options and saving us from the Rotax surprise.

    Garty
    Gary (Geek) Phenning
    Leavenworth (Not the Prison), WA
    Kitfox STi N68SG

  4. #14
    Senior Member Eric Page's Avatar
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    Jun 2020
    Location
    Toledo, WA
    Posts
    886

    Default Re: How find shop inspect my 912ULS gearbox?

    Let me save everyone the same treasure hunt I just went through trying to find these items...

    Rotax gear puller:
    https://www.aircraftspruce.com/catal...s/15-05923.php

    41mm socket:
    https://www.aircraftspruce.com/catal...12-03448-1.php

    If, like me, you don't have a 3/4" drive tool, they also list a 3/4"-to-1/2" drive adapter:
    https://www.aircraftspruce.com/catal...12-03452-3.php

    If you prefer lower prices, there are plenty of 41mm sockets on Amazon:
    https://www.amazon.com/s?k=41mm+socket

    ...as well as 3/4"-to-1/2" adapters:
    https://www.amazon.com/s?k=3%2F4+mal...socket+adapter

    Just be sure to order the right combination of 1/2" female to 3/4" male; the Amazon search mixes up both options.
    Eric Page
    Building: Kitfox 5 Safari | Rotax 912iS | Dynon HDX
    Member: EAA Lifetime, AOPA, ALPA
    ATP: AMEL | Comm: ASEL, Glider | ATCS: CTO
    Map of Landings

  5. #15
    Senior Member efwd's Avatar
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    Jun 2015
    Location
    Yorba Linda, CA
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    2,832

    Default Re: How find shop inspect my 912ULS gearbox?

    Thank You Eric.
    I just found out this week that California Power Systems is no longer affiliated with AS&S if even in existance. Im hoping Kevin is still around with his mobile shop. Need to call him still. Thanks for the post.
    Eddie Forward
    Flying
    SS7, 912iS, Garmin G3X

  6. #16

    Join Date
    Sep 2012
    Location
    San Francisco
    Posts
    112

    Default Re: How find shop inspect my 912ULS gearbox?

    Just an update on my experience with getting my 912ULS gearbox 600 hour inspection done by Motive aero in Utah. Went flawlessly, would use them again for my next 600hr inspection. Three business days after they recieved the gearbox by UPS they had shipped it back to me with the signed sticker for my engine logbook entry.

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