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Checking the chain

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I've jumped a tooth again on my timing chain. Looking to confirm what I think I know,  I need a new  timing chain.  

20170614_184859.jpg

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17 minutes ago, JoeRC51 said:

I'm assuming you removed the tensioner before you took that picture ?

Nope...

2 minutes ago, S.O.A.N.Z said:

That sprocket looks worn to me 

I'll drop the chain and get a better picture of it. 

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1 hour ago, tucan said:

Nope...

I'll drop the chain and get a better picture of it. 

 

1497498247997896666039.jpg

14974982735291612134860.jpg

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If you can lift the chain off the sprocket teeth like that then it`s stretched pretty bad,,,but you better look some close at the tensioner pin for wear marks..

 

I`d put a chain,tensioner,spring and pin in that puppy...

You need to look at the sprocket teeth to tell wear,,,the sides of the sprocket mean nothing..that`s not where they wear..

 

B

Edited by brianhare
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29 minutes ago, brianhare said:

If you can lift the chain off the sprocket teeth like that then it`s stretched pretty bad,,,but you better look some close at the tensioner pin for wear marks..

 

I`d put a chain,tensioner,spring and pin in that puppy...

You need to look at the sprocket teeth to tell wear,,,the sides of the sprocket mean nothing..that`s not where they wear..

 

B

The teeth look good, as far as I can tell. Not grooved or marked up. 

 I know what you are taking about,  except the pin. 

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37 minutes ago, brianhare said:

You need to look at the sprocket teeth to tell wear,,,the sides of the sprocket mean nothing..that`s not where they wear..

aha...

 

SP.jpg

4 minutes ago, tucan said:

The teeth look good, as far as I can tell. Not grooved or marked up. 

 I know what you are taking about,  except the pin. 

Yeah the sprocket looks fine  :thumbsup:

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49 minutes ago, S.O.A.N.Z said:

aha...

 

SP.jpg

Yeah the sprocket looks fine  :thumbsup:

 

and as I said,,the sides of the sprocket mean nothing in this discussion.......as the XR650L has a steel sprocket,,never seen one wear on the sides yet..

So posting a pic of what looks like a cheap alloy sprocket from the thickness of it..from who knows what means nothing in the XR forum..

 

so post a pic of side wear like that of a cam sprocket from one of our engines...

 

I`ll  wait for ya...I`m up tonight anyway..;)

 

B

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1 hour ago, tucan said:

The teeth look good, as far as I can tell. Not grooved or marked up. 

 I know what you are taking about,  except the pin. 

The pin is the piece you pull out of the tensioner,,,you see it from the side of the head..

the one way rollers in the tensioner grab that pin to stop rotation,and in doing that wear flat spots in it,,if you see wear,,and can feel the "dents" in it from the rollers beating into it..it`s going to cause the tensioner one way bearing to not stop rotation and the chain starts slapping possibly breaking the cam rails and possibly jumping timing from a slack chain..

 

the wear on these sprockets is between the teeth,

 

B

 

Edited by brianhare
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14 minutes ago, brianhare said:

I`ll  wait for ya...I`m up tonight anyway..;)

 

B

:snore:

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