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Post by donkeychomp on Jul 11, 2019 19:33:53 GMT 1
Thanks Dusty but I think I know what's happened. How is a mystery. Look at this cog... Alex
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Post by oldbritguy on Jul 11, 2019 21:07:51 GMT 1
Mmmm! Summit looks wrong there Alex. Has the idler gear come adrift as it looks as though it is not engaged with the tacho drive as well. Looks straightforward enough though for a man of your adaptive skills. Keep us informed of what you find behind the clutch basket. John
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Post by donkeychomp on Jul 11, 2019 22:00:53 GMT 1
I will John. May as well take the engine out and get the frame to the engineers for some tab welding. Hoping this will be a simple job, and so relieved that it's not seized!
Alex
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Post by dusty350 on Jul 11, 2019 22:04:56 GMT 1
I agree, idler gear looks wrong. It should line up with the plastic tacho drive cog. When you operate the kickstart the kickstart gear will move forward and locate with the idler gear, and then return back and out of the way when the kickstart returns. Is there a circlip lurking in the bottom of the case ? Dusty
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Post by donkeychomp on Jul 11, 2019 22:13:20 GMT 1
I shall see tomorrow matey! Still got to do some work on my truck though it's nigh on undrivable at the moment.
Alex
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Post by 4l04ever on Jul 12, 2019 22:09:18 GMT 1
If it is like an LC, it may have a circlip holding the gear on, which may not have been seated fully...and fell off :-)
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Post by donkeychomp on Jul 12, 2019 22:22:49 GMT 1
Gave up on the truck. I need to go get a bit of metal tomorrow morning to fashion a cradle to support the transfer case.
So...drained the RD's oil, got the clutch basket out then realised I need a 28mm socket (that Dusty torqued down) to get access to the idler gear. Do I have one? No. Gave up on that as well and did mum's garden instead. I'll see how much a socket is at my local motor factors tomorrow...
Alex
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Post by dusty350 on Jul 13, 2019 7:32:27 GMT 1
I've got one Alex, and will get it off for you - just ask ! Dusty
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Post by donkeychomp on Jul 13, 2019 10:57:02 GMT 1
Fantastic mate. Maybe one day next week? I know your usually busy over the weekends.
Alex
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Post by stusco on Jul 13, 2019 11:33:58 GMT 1
My mate just had that same problem it turned out the washer was missing so the idle gear eventually ate the circlip
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Post by donkeychomp on Jul 13, 2019 18:37:35 GMT 1
Aha. Seems this must be the culprit then.
Alex
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Post by oldelsieboy on Jul 13, 2019 18:43:08 GMT 1
So...drained the RD's oil, got the clutch basket out then realised I need a 28mm socket (that Dusty torqued down) to get access to the idler gear. I'll see how much a socket is at my local motor factors tomorrow... Alex Don't buy a 28mm socket, it will not fit, should be 29mm. OEB
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Post by donkeychomp on Jul 13, 2019 21:47:45 GMT 1
Just as well I didn't! Alex
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Post by reedpete on Jul 15, 2019 14:31:55 GMT 1
Just seen the pic... Either the circlip wasn’t on correctly or the bearing /whole cluster has moved because the c clip wasn’t fitted.... Either way an elementary error of the type many will have made when they first put engines back together.. Supports what I was trying to impress about double/triple checking as you go, gear box function etc...etc. Fingers crossed it’s the external c clip and no case split required.
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Post by dusty350 on Jul 15, 2019 17:51:48 GMT 1
Did the crank get new seals when this engine was rebuilt ? Couldn't see any mention of it in this thread.
Dusty🙂
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Post by donkeychomp on Jul 15, 2019 22:29:36 GMT 1
Errr...
no
Alex
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Post by dusty350 on Jul 16, 2019 7:49:52 GMT 1
Ok, next question is, do you know how old the crank seals you have are ? Condition, and whether genuine or pattern ? This is critical to the engine mate, and as a set of genuine seals only costs £20 or so, you should change them if there is any doubt at all. Dusty
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Post by donkeychomp on Jul 16, 2019 22:05:31 GMT 1
Sorry for the late reply Dusty. I have no idea about the seals so I'll order some genuine ones tonight. Is eBay the best bet for that or is there somewhere else to go to so I can ensure I get genuine ones.
Alex
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Post by oldbritguy on Jul 16, 2019 22:47:35 GMT 1
Norbo, Mutts and Fowlers all do genuine seals Alex.
John
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Post by donkeychomp on Jul 16, 2019 22:51:38 GMT 1
Thanks John!
Alex
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Post by donkeychomp on Jul 17, 2019 20:16:21 GMT 1
Dusty popped over earlier today and got the nut off...but then we couldn't see anything wrong. So why the kickstart jammed is a mystery. However I do need a washer and a new locking tab. Not a biggie. But the engine will be coming out to have new crank seals. For the sake of £25 it seems idiotic not to do this. But one thing he said (as have others) sank in a bit. Doing 3 bikes at the same time is hard enough. Doing it on a very part time basis is even harder. And doing it on a budget of zero is nigh on impossible. Seeing I want a bike, any bike, on the road asap I have decided to moth ball the drag bike and the LC and just concentrate on the Purple Popsicle. This will have a day time MOT and all I need really apart from some welding is a carb. Trying to find one is harder than I thought though. There are 2 types and of course the one I need is the rare one! Fingers xxd I can find one.
Alex
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Post by 4l04ever on Jul 17, 2019 21:07:48 GMT 1
Post up a pic of behind the clutch basket, as the kickstart gear does not look like it could come out and mesh with the idler gear. One or both may not be correct for your engine.
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Post by donkeychomp on Jul 17, 2019 21:54:38 GMT 1
I will when I start to fit the new seals, promise.
Alex
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Post by dusty350 on Jul 18, 2019 7:33:24 GMT 1
The photo of the idler is a red herring. There is a smaller gear behind the idler gear that you cant see. Obviously different to an Lc/Pv design. I've only stripped one "C" and that was a long time ago so didn't remember the "extra" sprocket ! With the case off, the engine turns over without issue and the kickstart works too and doesn't jam. It seems the kickstart gear is in constant mesh with the gears, and doesn't operate like the water cooled bikes. To be honest, my back hasn't been good so I wasn't to keen to stay bent over the bike too long to work it out ! The other issue being the unknown crank seals. Plus Alex thinks he is losing gear oil from between the cases, and I noticed the clutch inner hub was missing a shim too. My advice is to pull the engine and start again, checking every component thoroughly and only fitting it once happy. I would want to check the crank bearings too as Alex soaked these in Parafin due to muck in the crank. These old aircooled engines are more involved than the Lc's - a lot more parts to get the job done, so I think it prudent that it gets a complete check over. It also needs timing, so even if there was a spark it may have been in the wrong place. I have a spare C gear cluster buried somewhere in the shed so I will find that and have a better look. You've made the right decision on doing one bike at a time mate With very limited funds, trying to build 3 bikes that all need a fair amount of time and money means none will ever get done, so concentrate on one and bury the other 2 until you are ready. We've all done it - I definitely have, where you try and juggle more than one build, and it gets very frustrating, and you get nowhere fast. Build the tiddler as that's nearest to being done, and then think about the others. And I will help you do the aircooled engine when you are ready Dusty
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Post by dusty350 on Jul 18, 2019 9:08:59 GMT 1
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Post by donkeychomp on Jul 18, 2019 11:28:27 GMT 1
Thanks Dusty. When I have all the parts to hand I will give you a tinkle for sure. When it runs (not if lol) I think some beers might be on the cards...
Alex
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Post by donkeychomp on Jul 18, 2019 20:37:49 GMT 1
Right. The engine is out, partially dismantled and is on the work bench. The bike is now at the back of the workshop with Elsie. And the Popsicle takes over... Alex
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