Rollers and cam chain

HusaPemby · Oct 23, 2006

I just recently purchased some valve train and cam chain parts for my 2002 650 Fe. This was a result of the intake roller wearing out and then gouging the cam lobe. While I'm in there I figured I should replace the cam chain and upper sprocket (with a steel one). I initially was told the reason the roller wheels wore out was because they were aluminum and the new ones are steel, although upon closer inpsection with a magnet it seems the old ones are steel as well????? Why did they go then.

Also, the new cam chain (DID KTM brand) is less gurthy than the old one. Ie. thinner links. Should this not be a concern?

Thanks for any help.

Taffy · Oct 24, 2006

hello husapemby

where you from? please put it in your sig along with the bike.

the did is going to be made of better steel and the wear is all in the pin sideplate area. D.I.D have a great reputation and i would trust them far more than the outgoing renolds.

the pins in the roller were too big so they put lots more tiny ones in i believe. this gave more contact area. if you replaced the cam i hope you came up to date with that as well. the part number WAS 000 from 2003 and then we went to KTM part numbers so i haven't kept up with it but at the end of the partt numbers in say the 2005 parts book it always says the year that the part was first fitted so you will see:
32 187187232 '03-

so go into downloads and have alook at the latest. hope you got the later tensioner blade as well. please check 'red alert' in the owners 'thedoc'.

very best of luck old chap!

regards

taffy

HusaPemby · Oct 24, 2006

Taffy,

The part number for the camshaft is 8103601000 and the shop also ordered another auto decompressor lever part number 59036016000 as they said it needed to be updated for the 'new' camshaft. It seems looking at your message that they may have in fact ordered me the old camshaft. What's the difference between the new and the old?

Also, i'll have to look into the tensioner/guide as well.

thanks for the help.

Taffy · Oct 24, 2006

eeeuuuuwer! hope not! i really must get to grips with this sometime. at this point joeusa normally rescues me....

the old cams were used till the end of '02 i believe. after that they were upgraded and when the last decomp upgrade was will again be told in those last numbers

32 187187232 '03-

regards

Taffy

sixdays · Oct 25, 2006

Is my cam chain worn?

I thought my cam chain was worn out, it has 3 clicks "left" on the tensioner. Then someone told me a KTM only has 4 clicks left, with a NEW chain!!!
So my question - is it worn out, do i have to change or can i still run some 100 miles with it??

Taffy · Oct 25, 2006

RE: Is my cam chain worn?

if it has three clicks left it should be worn out i would think. it should only be halfway along the clicks when near new and the difference is a lot here.

try to pull the camchain up off the sprocket like you'd pick up a rat. if there is slack in the chain you'll be able to wobble the links.

regards

Taffy

Johnf3 · Oct 25, 2006

Re: Is my cam chain worn?

sixdays said:
I thought my cam chain was worn out, it has 3 clicks "left" on the tensioner. Then someone told me a KTM only has 4 clicks left, with a NEW chain!!!
So my question - is it worn out, do i have to change or can i still run some 100 miles with it??

It may of been me that replied to you over there. What I found, this was with my 520, not my Husaberg, was that with a brand new cam chain, cam sprocket, all new chain guides, etc. was that a brand new chain was 5 clicks out from being fully extended on the tensioner.

I don't know if this applies directly to the Husaberg or not, but many KTM guys were replacing perfectly good timing chains.

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Rollers and cam chain

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