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Pulling a 912ULS Gear Box

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JohnF

Joined: 13 May 2010
Posts: 124

Posted: Fri Jul 16, 2010 9:46 am Post subject: Pulling a 912ULS Gear Box

I need to pull the gear box from my 912ULS to have  it checked out after a prop strike. I have removed the 10 (or is it  smaller  bolts, and the two larger ones at the bottom.

  

 The forward case doesn't seem to want to move...a  few genle taps with a rubber hammer didn't do anything, so it seems I need  information.

  

 How do you 'pull' the gear box? Force? Some special  puller tool? What?

  

  

 JohnF

   [quote][b]

bob(at)fly-ul.com
Guest

Posted: Fri Jul 16, 2010 10:04 am Post subject: Pulling a 912ULS Gear Box

 	  Quote: 	
		   

The forward case doesn't seem to want to move...a few genle taps with a rubber hammer didn't do anything, so it seems I need information.


	


You really need the gear puller that's available for that gearbox. Hammer on it, and you might crack something. Piece of cake with the puller.

--

Bob Comperini

e-mail: bob(at)fly-ul.com

WWW: http://www.fly-ul.com

rlborger(at)mac.com
Guest

Posted: Fri Jul 16, 2010 10:13 am Post subject: Pulling a 912ULS Gear Box

John,



Go to my Europa Owners Gallery.  You should see an album concerning the Lockwood 9XX School.  Click on the album and then go to page 4.  Toward the top of the page there are a couple pictures concerning removal of the gearbox.

Yes, there is a special tool made for gearbox removal.  

Good luck,

 Bob Borger

Europa Kit #A221 N914XL, XS Mono, Intercooled 914, Airmaster C/S

http://www.europaowners.org/forums/gallery2.php?g2_itemId=60232

http://www.biplaneforumgallery.com/index.php?cat=10046

Europa Flying!

3705 Lynchburg Dr.

Corinth, TX  76208

Home:  940-497-2123

Cel:  817-992-1117





 

 

On Jul 16, 2010, at 12:42, John Fasching wrote:

 	  Quote: 	
		  I need to pull the gear box from my 912ULS to have it checked out after a prop strike. I have removed the 10 (or is it  smaller bolts, and the two larger ones at the bottom.

 

The forward case doesn't seem to want to move...a few genle taps with a rubber hammer didn't do anything, so it seems I need information.

 

How do you 'pull' the gear box? Force? Some special puller tool? What?

 

 

JohnF

 	  Quote: 	
		  



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bob(at)fly-ul.com
Guest

Posted: Fri Jul 16, 2010 10:34 am Post subject: Pulling a 912ULS Gear Box

 	  Quote: 	
		  > 

>How do you 'pull' the gear box? Force? Some special puller tool? What?

> 


	


And don't forget to consult the 912 maintenance manual(s). They usually have decent descriptions of how to remove things like this. You'll certainly want to consult it when you re-install the gearbox too, so you have the torque values, and know the proper flange sealant to use when reassembling the gear box.



--

Bob Comperini

e-mail: bob(at)fly-ul.com

WWW: http://www.fly-ul.com

Roger Lee

Joined: 10 Jan 2006
Posts: 1464
Location: Tucson, Az.

Posted: Fri Jul 16, 2010 11:58 am Post subject: Re: Pulling a 912ULS Gear Box

Here is an inexpensive homemade gearbox puller.

The cost for a gearbox inspection including parts is about $450 and if the shaft is bent past the acceptable limits then that is another $640. About 70% of the shaft flanges are bent, just many people never bother to check it or know how to check it.

Homemade Gearbox puller1.pdf

Description:

Homemade gearbox puller

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Homemade Gearbox puller1.pdf

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_________________
Roger Lee
Tucson, Az.
Rotax Instructor & Rotax IRC
Light Sport Repairman
Home 520-574-1080 TRY HOME FIRST
Cell 520-349-7056

kevann(at)gotsky.com
Guest

Posted: Fri Jul 16, 2010 12:53 pm Post subject: Pulling a 912ULS Gear Box

Hi John,

 rotaxowner.com has video on how to remove and  install (with the proper sealant) your gearbox. You can make a tool from a cheap  slide hammer and fabricated bolt on fixture that Roger showed in a  photo.

  

 Kevin

  

  

 [quote]   ---

Dick Maddux

Joined: 24 Jun 2008
Posts: 516
Location: Milton, Fl

Posted: Sat Jul 17, 2010 12:42 pm Post subject: Pulling a 912ULS Gear Box

Holy cow Roger ! That is about the "cheesest " puller I have seen but if does the job then thats great. I have one I cut out of 1/4 inch steel sheet with a plasma cutter and  attached it to a small slide hammer.It  works great!

  Anyway Johann you can buy one from California Power Systems if you want for about $75. Lockwood and LEAF also have them but I think they are higher. This of course is if you don't want to make one

                                                Dick Maddux

                                                912UL

                                                Milton,Fl

  [quote][b]

Roger Lee

Joined: 10 Jan 2006
Posts: 1464
Location: Tucson, Az.

Posted: Sat Jul 17, 2010 1:59 pm Post subject: Re: Pulling a 912ULS Gear Box

This puller works just as good as the most expensive ones and it cost about $10 to make. You can use a slide hammer with it or just get a 2' all thread screw from Ace Hardware. Put a nut on each end and a 2.5 lb. dumb bell weight  on the long shaft to slide back against your nut. Works like a charm. Slide hammers are cheap at Harbor Freight.

_________________
Roger Lee
Tucson, Az.
Rotax Instructor & Rotax IRC
Light Sport Repairman
Home 520-574-1080 TRY HOME FIRST
Cell 520-349-7056

b.carl@sympatico.ca

Joined: 20 May 2008
Posts: 77

Posted: Sun Jul 18, 2010 6:59 am Post subject: Pulling a 912ULS Gear Box

Hi Dick

 Could you post a picture of your puller?

 Carl

 701/ 912

 [quote]   ---

Dick Maddux

Joined: 24 Jun 2008
Posts: 516
Location: Milton, Fl

Posted: Wed Jul 21, 2010 4:00 pm Post subject: Pulling a 912ULS Gear Box

Carl,

  Here are some pictures of my homemade gear box puller.It is cut out of 1/4steel plate with a plasma cutter.

                                             Dick Maddux

                                             912UL

                                             Milton,Fl

Kitfox_065.jpg

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Kitfox_066.jpg

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