dowey Posted June 19, 2022 Report Share Posted June 19, 2022 Mornin from a cold and wet County Kerry I was coming home on my 2015 when, on acceleration, the drive slipped. It felt like it was from the shaft and am going to investigate properly this evening. It happened twice and drove fine otherwise, only if i tried to speed up too quickly. Have any of you good folk encountered this? Quote Link to comment Share on other sites More sharing options...
Vance Blosser Posted June 19, 2022 Report Share Posted June 19, 2022 Sounds like the clutch. Sometimes particles of the friction material can build up between the plates preventing a good mating between them and it will slip under load. Sometimes this resolves itself, otherwise it requires removing the clutch plates. It can also indicate a clutch that is worn and just needs replacing. I will say that if I tear it down all the way new plates are going in anyways because although it's not too hard to access it can be a bear to reassemble and you WILL need a clutch alignment tool. Good luck. Quote Link to comment Share on other sites More sharing options...
dowey Posted June 19, 2022 Author Report Share Posted June 19, 2022 Thanks Vance, was hoping it was something simple, like the rubber doughnut ..the slippage was only for a fraction of a second but what you say makes sense, even with very few miles on the clock Quote Link to comment Share on other sites More sharing options...
RussN Posted June 19, 2022 Report Share Posted June 19, 2022 Also inspect to see if there is evidence of oil in the bell housing. Urals have dry clutches like cars, so any oil is cause for slipping. However, I trust Vance's evaluation. But first make sure the clutch does not require adjustment. The clutch hand lever will likely be your first telltale for that. RussN Quote Link to comment Share on other sites More sharing options...
dowey Posted June 20, 2022 Author Report Share Posted June 20, 2022 Thanks Russ Quote Link to comment Share on other sites More sharing options...
dowey Posted July 13, 2022 Author Report Share Posted July 13, 2022 Only gettin out on the bike now and realised it's only third gear that's slipping. Do you think this could be an adjustment thing or will i have to dive into it more? Also, if adjustment on the gearbox ..would anyone be able to talk me through the steps. I have memories of doing this before and almost demented myself ..this was in the 90s haha Quote Link to comment Share on other sites More sharing options...
Vance Blosser Posted July 13, 2022 Report Share Posted July 13, 2022 I can't think of anything in the transmission that would cause slip in only one gear unless some of the teeth are gone. And I also can't think of any transmission adjustment that would cure this. Perhaps someone else can think of something. Quote Link to comment Share on other sites More sharing options...
dowey Posted July 13, 2022 Author Report Share Posted July 13, 2022 I remember one of my older Urals would drop out of third gear into neutral and this was adjusted out with the adjusting screws on the back of the box ...but this is just slipping and slipping quite badly now, was thinking teeth as well but was just hoping for an easier fix Quote Link to comment Share on other sites More sharing options...
RussN Posted July 13, 2022 Report Share Posted July 13, 2022 What Dowey said. I've had to make the same adjustment on one of my older 650cc Urals. This adjustment was described in the operating manual. If your manual does not describe the procedure, you can probably find that info from the IMZ-Ural.com website. It is not a difficult process. I suspect the OP's use of the phrase "the drive slipped" led Vance's thinking away from the real problem: The transmission occasionally SLIPS OUT of 3rd gear. Not that it is "slipping" while in gear. So locate that adjustment description and fix it. It's not a big deal to do if I could succeed at it. RussN Quote Link to comment Share on other sites More sharing options...
Vance Blosser Posted July 13, 2022 Report Share Posted July 13, 2022 Russ is correct about my assumption - I read slippage as staying in gear but slipping. If it's popping out of gear it could be adjustment will fix it, unless internal wear has made the gear assembly too loose to stay in place. Quote Link to comment Share on other sites More sharing options...
Wooden Nickel Posted July 14, 2022 Report Share Posted July 14, 2022 When my 2014 Ural kicked out of third, it was because I didn't shift into gear properly and after it kicked out once while accelerating up a ramp the dogs were rounded off and wouldn't stay in third from then on. Took a new set of third gear cogs to fix. Quote Link to comment Share on other sites More sharing options...
dowey Posted July 16, 2022 Author Report Share Posted July 16, 2022 Very poor wording on my part ..it is staying in gear and slipping whilst in third. Before when i made the adjustments on my older unit, it was that one that would fall out of gear altogether, i was kinda hoping this was a symtom of the same problem, though i think it's wishful thinkin haha Quote Link to comment Share on other sites More sharing options...
Vance Blosser Posted July 16, 2022 Report Share Posted July 16, 2022 If it's staying in gear and slipping, and the clutch cable is adjusted properly (with a bit of slack when released) then it's got to be the clutch. Splines in the driveshaft or the rear wheel where it engages make a very distinctive noise when slipping due to wear and it doesn't get better on it's own, so sadly it's time for the tranny to be opened up. Quote Link to comment Share on other sites More sharing options...
dowey Posted July 16, 2022 Author Report Share Posted July 16, 2022 6 hours ago, Vance Blosser said: If it's staying in gear and slipping, and the clutch cable is adjusted properly (with a bit of slack when released) then it's got to be the clutch. Splines in the driveshaft or the rear wheel where it engages make a very distinctive noise when slipping due to wear and it doesn't get better on it's own, so sadly it's time for the tranny to be opened up. Cheers Vance, will get on it soon. Would it be the clutch if it's only happening in third gear? Am going to investgate and will let yas know. Quote Link to comment Share on other sites More sharing options...
Vance Blosser Posted July 17, 2022 Report Share Posted July 17, 2022 If you go from a standing start and accelerate each gear loads the clutch more due to the higher gear ratio at wide open throttle, when mine slipped 3rd was the one I noticed but 4th would slip if pushed but was harder to make slip due to the engine being out of it's power band. Once top speed was reached I could detect some slippage in 4th uphills etc. but for some reason not as much as 3rd. Your mileage may vary! Quote Link to comment Share on other sites More sharing options...
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