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Aluminum flakes in screen.

Look at the replacement schedule for the cam gear! Sounds like you need to up grade to the steel cam gear like I’m doing? I have always had some flakes on my screen. My oil get changed every ride! Never have I had a bike the makes the oil some muddy?
 
Hi,

yesterday I had also some metal flakes in my oil screen.
And it was "light" metal. No steel.
I checked my camchain again and as I said before, the
chain scratched my crankcase. So I changed the chaintensioner plastic guide to the new one of 03.
The distinguishing feature is the colour and the shape. The old one is beige (dark yellow) and the new one is black.

J-jet-tim, yes first you have to check your chain tensioner - have a look if it´s in its end positon. First step is to unscrew the screw in the middle, afterwards you have to disassemble the whole tensioner. There you can see
in which position the notch is. If it´s already in end position the case is clarified, I think.

I can´t believe that it has to do with the aluminium cam sprocket, if you have one at all. Sorry I doubt it.
Otherwise, I didn´t hear about problems of the pre 2001 engines in that way.
By my experiences with older engines I can´t confirm the theory about the cam sprocket.
In former times the alu cam sprocket wasn´t worn out too quickly. And: they used it for over 10 years!

Biggish, you should also check your cam chain tensioner. It doesn´t take too much trouble or let me say time to spend on it.


best regards

hribman
 
The tensioner was in the second to the last
position .In the last position it is too tight.
So where did the flakes come from?
I need to make the plunger longer.How
is this usually done?
 
It might also be worth checking the gear on the kickstart shaft, the one in my bike was rubbing on the cases.
 
I just want to fix the cam chain tensioner.
I have Cycle Trader coming friday for pictures
to list in in their magazine and on their website.
The people on this site have been good.If one
of you want it I will make you a good deal.
I would like to thank all of you for your help
and support. Tim Miller
 
t-jet, sorry to hear that you are selling the 'berg. I hope you are going to a 2-stroke if you are looking for increased reliability, rather than another 4T. I saw a poll on TT today that owners of crf250's showed that 36% of them had valve troubles, ouch. A quick perusal of the 6-days results over the last few years will show that most of the bikes with mechanical DNF's are 4T's, Husaberg 4T's and TM 2T continue to have the lowest DNF rate.
 
I am looking at a KTM250EXC
and a TM250e. Both are real good
deals,I hope I don't miss out.
300EXCs are popular enough
and one might show up in the
local classfieds also.Then all I have
to hope is this berg hasn't infected me
with fourstrokeitis or something.
If I get a KTM can I get blue and
yellow plastic?
 
Hi,

sorry to hear that you want to sell your Husa.
You can get blue plastics for the KTM. .
Yellow front fender you can take from the berg. But that wouln´t be the same.

good luck

hribman
 
Cheesy said:
It might also be worth checking the gear on the kickstart shaft, the one in my bike was rubbing on the cases.

This is indeed yet another source of Aluminum slivers for which I have seen many times as well.

Dale
 
Since I NEVER use the kickstart
would it still be able to produce
flakes?I am beginning to think
some of the metal is off the adjuster
button.
 
Yes, The kick start idler gear spins while the engine is running.
No moving parts come into contact with the tension button.
Dale
 
The cam chain tensioner button definitely wears.
The plastic chain guide moves side to side slightly wearing the button down slowly.
You would think that the aluminum button would wear smooth but it doesn't. The plastic picks up on the aluminum taking small flakes off the button.

I am not sure but perhaps the newer black chain guide fixes this problem.
 
That would be a first for me as in my experience (some two dozen post 2000 engines) the tension assembly has been well out of of range prior to any notable wear on the Aluminum button. Perhaps if ignored long enough excessive chain slack could indeed promote button fretting, however, I personally have yet to see it.


"I am not sure but perhaps the newer black chain guide fixes this problem."
Yes, however it does so simply by being thicker consequently eliminating the need for the Aluminum button.

Sincerely,
Dale
 
Hi Dale,
When I removed the head recently I still had about half the travel left on the tensioner but with obvious signs of wear on the button.

I had Powerhouse fit the new valves to the head and asked them about the wear on the tensioner button. They advised me it is common, unfortunately I didn't ask if it was a problem on any particular model.
 
How peculiar as I have yet to pull down a 2001 - 2003 engine that has had more than two clicks remaining on the tension plunger. Most with any real operating hours have been completely out of range. In each case the Aluminum button is always a bit burnished though without obvious signs of wear. Regarding 2004 engines said tension plunger protrudes an average of 15mm with nearly half the range remaining. You blokes get all the good stuff :D

Thanks for the feedback.
Kind Regards,
Dale
 
Dale,
My bike did drop the cam chain toward the end of its warranty so the current chain, tensioner, head, etc are only about 12 months old.

When they rebuilt my bike the cam chain was tight before the tensioner was fitted so it started off using none of its travel. Apparently the new cam chains being tight was also common on 02 & 03s.
 
My bike has less than 400 miles on it.
l only had one click left ,wear marks
indicate since new it might have traveled
five notches.the button had significant
wear on the end,about .020 to.030 off
judging by the shape of the button.
 
2002 550 tension assembly with 60 plus hours of operation.
Note insignificant wear on either piece.
Plunger was fully extended and chain was quite loose.

This is quite typical of what I have seen.

MVC_001F.sized.jpg



What oil are you gentlemen using?

Best Regards,
Dale
 
The entire face of my button is worn flat.
I have used Golden Spectro full synthetic,
changed often.I'm not sure what the ex-dealer
used,he hasn't returned my e-mails since I
bought it.
 
T-Jet-Tim,
Best of luck with your new steed whatever it may be.
Please be sure to drop in for a visit from time to time.
Kind Regards,
Dale
 

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