Camchain tensioner bolt help!!

stevekenn

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Hi I am new to the forum. I yesterday took a bolt out of the left hand side of the cam chain on my R850gs, its a M10 bolt 50mm long with a thread 17mm and then a plain shank. The problem being it won't go back in. I gather that the cam chain tensioner has dropped. Looking at a diagram on Motorworks website its, the one that fits in the left hand slide rail.
I am stuck on what to do and would really appreciate any help at all.

Thanks steve
 
There was a thread by someone who did exactly the same thing a couple of months back...do a search

If you take off the rocker cover on that side, get a long screwdriver and carefully lift the tensioner up a tad you might just, and I say just, lift it enough to get the bolt back in... Depends on how much tension is on the chain so I guess you'll have to remove the REAL tensioner bolt which is on top of the left cylinder head, close to the crank case.

I'm sure others will be along with suggestions. But brace yourself ;-)



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Hi I am new to the forum. I yesterday took a bolt out of the left hand side of the cam chain on my R850gs, its a M10 bolt 50mm long with a thread 17mm and then a plain shank. The problem being it won't go back in. I gather that the cam chain tensioner has dropped. Looking at a diagram on Motorworks website its, the one that fits in the left hand slide rail.
I am stuck on what to do and would really appreciate any help at all.

Thanks steve
I'm going to do this upgrade to my GS next week and from the YouTube video someone put on here you need a telescopic magnet to recover it. I just ordered one on eBay cheap as chips.
Hope that helps.
 
I think the op is referring to the bolt that holds the tensioner blade. Not the tensioner itself... Our maybe I'm mistaken?


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Steve. Can you post s picture of the bolt you're struggling with. Will help!


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If its the one it the inner end it seems to have a shim and a circlip holding the blade onto the bolt.?
07 11 31 1 460 923 SHIM
08 07 11 9 932 841 CIRCLIP - D=6MM
09 07 11 9 900 244 GASKET RING - A10X15-AL
B0004985.png
 
Hi I tried the method you suggested of taking off the rocker cover and putting a long screw driver down and lifting the tensioner slightly this afternoon. I am glad to say it worked and the GS is all back together working. I would like to thank you for your advice and everyone else who contributed to my thread.

Steve
 
Well done. Is nice to get out of those corners! We're you able to see if the washers/shims remained in place? Parts 7, 8 and 9. I'd guess they'd just rattle themselves into the sump if not. Would like to think they're harmless there



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What to do now

Hi Now you have mentioned the shim and the circlip, I am wondering if they have come off? They must of done (wouldn't they) Can they cause any damage? and what are the dangers of the slider causing any damage if these items are missing?


Steve
 
No the top bolt is just a reduced diameter its only the centre one is a different set up holding the innermost part of the two lower cam chain guides
 


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