---------------------------------------------------------- RotaxEngines-List Digest Archive --- Total Messages Posted Fri 07/16/10: 7 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 07:05 AM - Re: Re: rough running at 3400 RPM and above (joeing701@simnet.is) 2. 10:46 AM - Pulling a 912ULS Gear Box (John Fasching) 3. 11:04 AM - Re: Pulling a 912ULS Gear Box (Bob Comperini) 4. 11:13 AM - Re: Pulling a 912ULS Gear Box (Robert Borger) 5. 11:34 AM - Re: Pulling a 912ULS Gear Box (Bob Comperini) 6. 12:59 PM - Re: Pulling a 912ULS Gear Box (Roger Lee) 7. 01:53 PM - Re: Pulling a 912ULS Gear Box (Kevin Klinefelter) ________________________________ Message 1 _____________________________________ Time: 07:05:57 AM PST US From: "joeing701@simnet.is" Subject: Re: RotaxEngines-List: Re: rough running at 3400 RPM and above Hello Rotax owners. My friend is also experiancing rough running on his Rotax 912 ul and has done all kinds of adjustments,replacing carb parts and cleaning, but is tearing the engine off to look at the electrical system. His plane is a Kitfox and the engine is to close to the firewall to do any inspection on the megnetos and ignition system. We were wondering if anyone has replaced the spark plug wires without replacing the ignition coils? Are the wires screwed into the coils or glued? Thanks, Johann G. Rotax 912 ul. Zenith 701 Doug , Have you done a mag check? I had a rough runner and it showed up in the mag check. After much work,frustration,etc I called Ronnie Smith at South Mississippi Light Aircraft and he suggested I check the red power lead to the coils for a break. I used a sewing pin with an ohm meter andattached one lead to the pin (the other to ground). By penetrating the plastic shielding of the wire I worked my way back along the wire and sure enough I found the break along a flat run. It was totally invisible from looking at it. With a cut and splice, I was back in business. You could call Ronnie. He is very helpful and sure knows these engines! Dick Maddux 912 Ul ________________________________ Message 2 _____________________________________ Time: 10:46:40 AM PST US From: "John Fasching" Subject: RotaxEngines-List: 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 8) 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 ________________________________ Message 3 _____________________________________ Time: 11:04:00 AM PST US From: Bob Comperini Subject: Re: RotaxEngines-List: Pulling a 912ULS Gear Box > >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@fly-ul.com WWW: http://www.fly-ul.com ________________________________ Message 4 _____________________________________ Time: 11:13:36 AM PST US Subject: Re: RotaxEngines-List: Pulling a 912ULS Gear Box From: Robert Borger 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: > 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 8) 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 > > > > ________________________________ Message 5 _____________________________________ Time: 11:34:43 AM PST US From: Bob Comperini Subject: Re: RotaxEngines-List: Pulling a 912ULS Gear Box >> >>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@fly-ul.com WWW: http://www.fly-ul.com ________________________________ Message 6 _____________________________________ Time: 12:59:33 PM PST US Subject: RotaxEngines-List: Re: Pulling a 912ULS Gear Box From: "Roger Lee" 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. -------- Roger Lee Tucson, Az. Light Sport Repairman - Maintenance Rated Rotax Repair Center 520-574-1080 Read this topic online here: http://forums.matronics.com/viewtopic.php?p=305112#305112 Attachments: http://forums.matronics.com//files/homemade_gearbox_puller1_146.pdf ________________________________ Message 7 _____________________________________ Time: 01:53:41 PM PST US From: "Kevin Klinefelter" Subject: Re: RotaxEngines-List: 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 ----- Original Message ----- From: John Fasching To: rotaxengines-list@matronics.com Sent: Friday, July 16, 2010 10:42 AM Subject: RotaxEngines-List: 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 8) 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 ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message rotaxengines-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/RotaxEngines-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/rotaxengines-list Browse Digests http://www.matronics.com/digest/rotaxengines-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.