riffraffretro Posted January 4, 2019 Report Share Posted January 4, 2019 Can anyone recommend a suitable puller for the job... just about to delve into the cases of my 1971 247? Previously posted links to tools used aren't working. Thanks in advance. Quote Link to comment Share on other sites More sharing options...
feetupfun Posted January 4, 2019 Report Share Posted January 4, 2019 This is what I made to remove Cota 348 primary drive pinions. It worked a treat. The 247 drive gear is very similar to the 348. 1 1 Quote Link to comment Share on other sites More sharing options...
riffraffretro Posted January 4, 2019 Author Report Share Posted January 4, 2019 Nice DIY engineering there. I was hoping to buy something suitable, but there's not a great deal of clearance under the gear and the force reputedly required necessitates a pretty robust tool. 1 Quote Link to comment Share on other sites More sharing options...
barnesy Posted January 4, 2019 Report Share Posted January 4, 2019 Have a read of this post .. Quote Link to comment Share on other sites More sharing options...
section swept Posted January 4, 2019 Report Share Posted January 4, 2019 There are gear pullers made for automotive application. Feetupfun has fabricated a workman like puller which with a little work you could either make or as the mechanics to remove the gear are demonstrated a skilled engineer should be able to perform the task. Hope you have sone luck. Quote Link to comment Share on other sites More sharing options...
woody Posted January 5, 2019 Report Share Posted January 5, 2019 (edited) I have one of these kits and it worked fine to remove the drive gear on my 247 https://www.machinemart.co.uk/p/cht249-14-pce-bearing-separator-angle-ge/ Edited January 5, 2019 by woody Quote Link to comment Share on other sites More sharing options...
riffraffretro Posted January 6, 2019 Author Report Share Posted January 6, 2019 Thanks again everyone - some really helpful advice and guidance (as always). I think I'll try the Machine Mart style puller kit and see how it goes from there - hopefully this, in combination with the hints and tips posted by others, should see the gear off and the job done. Quote Link to comment Share on other sites More sharing options...
yamanx Posted January 7, 2019 Report Share Posted January 7, 2019 I made a machined part which fits over the primary drive and allows a large puller to "Grab" it. Similar to the one pictured but more chunky. You are welcome to borrow it, I did have some images, but I can't find them, you'll have to use a puller, but even a monster puller fits using this adaptation. Quote Link to comment Share on other sites More sharing options...
riffraffretro Posted January 7, 2019 Author Report Share Posted January 7, 2019 Sounds interesting and a VERY kind offer. I'll try removing the gear with the tool I've ordered (arriving Wednesday), if not, I might take you up on the offer as I have a large/HD puller in the toolbox. Thanks again. Quote Link to comment Share on other sites More sharing options...
yamanx Posted January 7, 2019 Report Share Posted January 7, 2019 OK, let us know how it goes. It is a proper b'stard to get off. Quote Link to comment Share on other sites More sharing options...
yamanx Posted January 9, 2019 Report Share Posted January 9, 2019 Found an image I borrowed the puller, but I still have the adapter as pictured. Quote Link to comment Share on other sites More sharing options...
riffraffretro Posted January 10, 2019 Author Report Share Posted January 10, 2019 That adapter looks just about perfect! As I've just knackered a second puller, I think it's time to get something more substantial in the mix. Have sent you a PM. Hope this is OK and thanks again. Quote Link to comment Share on other sites More sharing options...
riffraffretro Posted February 5, 2019 Author Report Share Posted February 5, 2019 (edited) A MASSIVE thank you to Yamanx for his generosity lending me his puller adapter. Have to say, an amazing piece of engineering that made removing the gear a relative piece of cake... still can't believe how much force was required to separate the gear from the crank (air impact socket on a 3' breaker bar, plus gentle persuasion with a hammer - shocking the puller/crank taper at various degrees of tightening force), which I'd have failed miserably at were it not for the adapter! A true gentleman and a credit to the sport and motorcycling in general. Thanks so much. Edited February 5, 2019 by riffraffretro 1 1 Quote Link to comment Share on other sites More sharing options...
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