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R100LT 10-07-2012 03:56 AM

Look what I found
 
Whilst dropping the oil and checking the sump a found a small pile of chewed up rubber ... Apart from that the oil was clean and not a hint of any metal.

Any ideas of where I should be looking for the culprit ???

http://i1271.photobucket.com/albums/...T/IMG_0011.jpg

Uncle Pollo 10-07-2012 04:00 AM

Pushrod seal or old sealant.

Bill Harris 10-07-2012 06:04 AM

If it's hard rubber, it may be from the timing chain tensioner rail.

R100LT 10-07-2012 06:06 AM

Thanks Bill ... Yep its pretty hard rubber ... but I haven't noticed any noise from the timing chain

disston 10-07-2012 07:36 AM

Most likely timing chain tensioner.

R100LT 10-07-2012 07:46 AM

so you are thinking thats its just a bit off the end of the timing chain tensioner ??? You thinking its worth digging and replacing it if I am not getting any undue noise from the timing chain ???

Wolfgang55 10-07-2012 07:59 AM

It just maybe......German chewing gum.

TASTE IT

DoktorT 10-07-2012 08:47 AM

Just way too big a chunk to ignore. More chunks will follow. Other chunks could be floating around in the chain case. Plan to pull the timing cover this winter, inspect the chain and gears, replace the tensioner rail/s and perhaps the spring.

Don't wait for nasty noises. That would likely mean much more cost than fixing this obvious flaw BEFORE any nasty noises get started.

disston 10-07-2012 09:35 AM

How many miles on this engine?

H96669 10-07-2012 11:14 AM

I found similar chunks in the GS. Was the guide rail for the camchain, the one opposite the tensioner.

In itself not all that critical, that is if the pieces had stayed in the sump. Because it is a GS, looks like the PO dropped it on the left hand side. Some of the little pieces got in between the piston/cylinder. Wanna see the damages?:huh

Bill Harris 10-07-2012 11:36 AM

It's probably either the tensioner or the guide rail, and suggests some mileage. The guide rail keep the chain quiet once it wears-- on the earlier duplex chain engines, the worn chain would announce itself by rattling against the timing chain cover and create noise and aluminium shavings. It isn't going to get better.

No big hurry, but don't forget about it... :deal

Beater 10-07-2012 11:39 AM

Quote:

Originally Posted by DoktorT (Post 19766538)
Just way too big a chunk to ignore. More chunks will follow. Other chunks could be floating around in the chain case. Plan to pull the timing cover this winter, inspect the chain and gears, replace the tensioner rail/s and perhaps the spring.

Don't wait for nasty noises. That would likely mean much more cost than fixing this obvious flaw BEFORE any nasty noises get started.


PS - He's in Western Australia ... It's getting to be spring for him ;-)

Take the timing chain cover off NOW.

R100LT 10-07-2012 02:02 PM

The bike has done 65 000 km's ... so I guess its getting about time for a new timing chain .

I just didn't want to " upset " my good work of the Enduralast system that I put in last year .

Oh well ... Timing Chain Kit is the shopping cart as we speak.

disston 10-07-2012 02:11 PM

I have always thought that the duplex chain is inherently better than the single row chain. After all it's twice as much chain. But the single row chains seem to be an improvement. I don't know why. Could be the tensioner system is better?

I would still do yours because of this symptom you have developed. But 65,000 KM seems an early failure.

100RT 10-07-2012 02:23 PM

I hope the pick up screen wasnt laying there also.


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