Look what I found

R100LT · 10-07-2012, 03:56 AM

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 ???

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?

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...

Beater · 10-07-2012, 11:39 AM

Quote:

Originally Posted by DoktorT

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.

10-07-2012, 03:56 AM	#1
R100LT ^OP Chasing 11 Joined: Jan 2012 Location: Nannup Western Australia Oddometer: 336	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 ??? __________________ Putting the " Luxury " into the "LT"

10-07-2012, 04:00 AM	#2
Uncle Pollo Von Hochstaden's son Joined: Jun 2006 Location: Albuquerque, Neue Messico Oddometer: 44,977	Pushrod seal or old sealant. __________________ mikuni vm32-33 both sides :\ 5000 feet altitude/ 140 main \ 159 02 needle jet\ 6F4 needle in the middle setting\ 0.5 air jet\ pilot 25/3.0 slide 35 mpg around town riding like a asno

10-07-2012, 06:04 AM	#3
Bill Harris Confirmed Curmudgeon Joined: Sep 2008 Location: backwoods Alabama Oddometer: 3,883	If it's hard rubber, it may be from the timing chain tensioner rail. __________________ '73 R60/5 Toaster

10-07-2012, 06:06 AM	#4
R100LT ^OP Chasing 11 Joined: Jan 2012 Location: Nannup Western Australia Oddometer: 336	Thanks Bill ... Yep its pretty hard rubber ... but I haven't noticed any noise from the timing chain __________________ Putting the " Luxury " into the "LT"

10-07-2012, 07:36 AM	#5
disston ShadeTreeExpert Joined: Mar 2011 Location: Silver Spring, Md Oddometer: 5,009	Most likely timing chain tensioner. __________________ Never memorize something you can look up. ---Albert Einstein

10-07-2012, 07:46 AM	#6
R100LT ^OP Chasing 11 Joined: Jan 2012 Location: Nannup Western Australia Oddometer: 336	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 ??? __________________ Putting the " Luxury " into the "LT"

10-07-2012, 07:59 AM	#7
Wolfgang55 Beastly Adventurer Joined: Dec 2006 Location: Next to Rio Bravo Oddometer: 2,958	It just maybe......German chewing gum. TASTE IT

10-07-2012, 08:47 AM	#8
DoktorT BigBrowedNeandereer Joined: Apr 2009 Location: Spokaloo Oddometer: 1,004	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.

10-07-2012, 09:35 AM	#9
disston ShadeTreeExpert Joined: Mar 2011 Location: Silver Spring, Md Oddometer: 5,009	How many miles on this engine? __________________ Never memorize something you can look up. ---Albert Einstein

10-07-2012, 11:14 AM	#10
H96669 A proud pragmatist. Joined: Nov 2009 Location: Hiding off Hwy 6, B.C. Oddometer: 2,860	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? __________________ Have tools, will travel!

10-07-2012, 11:36 AM	#11
Bill Harris Confirmed Curmudgeon Joined: Sep 2008 Location: backwoods Alabama Oddometer: 3,883	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... __________________ '73 R60/5 Toaster

10-07-2012, 02:02 PM	#13
R100LT ^OP Chasing 11 Joined: Jan 2012 Location: Nannup Western Australia Oddometer: 336	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. __________________ Putting the " Luxury " into the "LT"

10-07-2012, 02:11 PM	#14
disston ShadeTreeExpert Joined: Mar 2011 Location: Silver Spring, Md Oddometer: 5,009	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. __________________ Never memorize something you can look up. ---Albert Einstein

10-07-2012, 02:23 PM	#15
100RT Gnarly Adventurer Joined: Nov 2009 Location: N. E. OHIO Oddometer: 274	I hope the pick up screen wasnt laying there also.

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