top end rackett

you lucky *******, you nearly lost the whole motor. Were any bearings lost out of the roller? If so ensure they have not found there way into something else. Look at your rocker arms for the roller bearings guaging into it and recking it also look for cracks as at least one would have taken a huge strain. I have seen them come flying right through the rocker cover. The picture of the cam is not clear. Get an expert to look at it, the hardening may have been damaged. If any pits .......

the hours are not the problem it is the type of oil you use and the tappet adjustment. too loose causes a hammer effect. You need a 10-15/60 oil to allow the oil to get up there when first started and the motor is cold. Your 90 hours only acconts for 9 rides in my language, 12 at the most.

As I said you lucky ....you could have trashed the motor. Have an experienced engineer look at it and er on caution, especially look at the rocker arms around where the loose rollers would have had some woodpecker type fun!!

Similar situation here too. 170 hours on the engine clock.

Had my valve cover off for some other minor work and noticed both my intake and exhaust rocker arm rollers are a tad crunchy and not rolling smoothly.

It appears that the bearings in these rollers are not serviceable. Looks like I may need new rocker arms to get the new roller bearings.

#60 59036060144 ROCKER ARM INTAKE CPL.
#61 59036061144 ROCKER ARM EXHAUST CPL.

If you haven't already done so, I would pull the clutch side cover and look for needle bearings from the cam follower bearings. and flush out any chips. You can also take a look at the teeth on the clutch gear and crank shaft drive gear. They probably chewed up the needle bearings from the cam follower bearings.

You can also check out the reed valve while the cover is off. Make sure nothing is jamed under it. A piece of bearing ball retainer ribbon got caught in my 00 501 and metal pieces got sucked inside the engine. Very bad!

I sure hope you didn't ride it very far when it started making noise!

If you did then you might plan on replacing the intake valve adjusting screws and locking nuts. I am assuming the intake rocker arm is the one the cam follower bearing failed in.

If your Berg is a 2001-2003, I would also recommend replacing the cam chain, cam sprocket, cam bearings, and cam chain tensioner slider (the one that pivots off a bolt in the head) with the 05 model for the displacement of your bike. Then you wouldn't have to worry about cam chain problems ever again.

Regards,

Joe

supertireguy said:

Similar situation here too. 170 hours on the engine clock.

Had my valve cover off for some other minor work and noticed both my intake and exhaust rocker arm rollers are a tad crunchy and not rolling smoothly.

It appears that the bearings in these rollers are not serviceable. Looks like I may need new rocker arms to get the new roller bearings.

#60 59036060144 ROCKER ARM INTAKE CPL.
#61 59036061144 ROCKER ARM EXHAUST CPL.

Click to expand...

The Cam follower bearings in the rocker arms are replaceable. If your Berg is an 89-early 03. you may want to replace the rocker arms with late model 03 arms though because the late 03 cam follower bearings last ~ 50% longer than the early bearings. The late 03 bearings have smaller diameter axles and therefore cannot be used in the early rocker arms.

Regards,

Joe

I've been going through some top end issues lately and my advice is get a new cam. I had a pivot foot come loose and get under the cam, it put a very small nick in it and I figured it wasn't much. After a few rides I figured I'd go back in and re tighten the head again and adjust the valves because it was getting a little loud well the cam is worn down and the roller is very pitted and ugly.

Don't skimp it will only bite you in the end.

Gentlemen,
You are relatively new members and such are old problems.
Use the Search function and Taffy's DOC .

I am most certain you shall find your answers.

Follower kits are indeed available. Dan @ Motoxotica most often has them in stock.

Sincerely,
Dale

Strange that I came across this thread while surfing the site as per usual.I had a 470 come into the shop recently with the same rocker and roller problem complete with all the small rollers in the clutch cover.The cam cover gives the term "normally aspirated" a whole new meaning.The real question that comes to mind is why did this fellow choose to keep riding his bike when quite obviously all hell was breaking loose?

BILLTECH said:

Strange that I came across this thread while surfing the site as per usual.I had a 470 come into the shop recently with the same rocker and roller problem complete with all the small rollers in the clutch cover.The cam cover gives the term "normally aspirated" a whole new meaning.The real question that comes to mind is why did this fellow choose to keep riding his bike when quite obviously all hell was breaking loose?

Click to expand...

Post 2000 engines are inherently quite noisy to begin with masking the rollers floating amongst the straight cut primary gears.

Dale

vinman1513 said:

in defense of my beloved berg" , as i said earlier , i was riding in a wash surrounded by high sandstone walls , the "acoustics" of just the stone and no trees or grass make a motor sound different in different areas . like having a skid plate and no skid plate. as soon as the terrain opened up and the louder than normal ticking was still there i immediatly shut the bike down , pushed it a good 2 miles in the blazing 104 degree desert heat , followed by a 3 mile walk back to my truck to fetch the bike .. the good news is all my parts are on the way from euro motors in michigan. he had everything in stock and went above and beyond on all of my over the phone technical queries .. super nice guy ...

Click to expand...

No defense necessary. You simply have a keen ear and very good luck.

Dale

IMHO the cam could continue.

but i always was a risk taker!.... (oh 8O and short o cash!)

regards

Taffy

I have over 400 hours on my 00 501. I have worn out the original and 3 replacement sets of rocker arm cam followers.

The Husaberg OEM 89-early 03 followers will last for 60 hours on the intakes and 120 hours on the exhausts.

The late 03 OEM followers will last for up to 90 hours on the intakes.

I am a recreational rider, not a racer! But I never let is sit and idle either! Most of my riding is between 3500 and 6000 rpm. I change my oil hot after each days ride and use Delo 400 15W-40. All of my Husaberg riding is in the California desert environment.

$50 worth of followers every 60 hours is cheap insurance against horribly expensive rebuilding of your motor.

Here is something I worked out that works for me:

If you check and adjust your valves your self, set up a log sheet. Every time you have to change the adjustment, record the amount. When the total amount of changes made equal 10 thousands of an inch (0.010") its time to replace the am follower needle bearing assembly on that rocker arm.

Check every 10-15 hours on the 89-03 Bergs.

Regards,

Joe

Over the weekend I rustled up a almost new set of free rocker arms from a 20 hour old race motor. The rollers were in much better shape than my 170 hour old crunchy rollers.

Installation was very easy. Gotta love the Husaberg engine design.


The bike started right up and viola, the top end racket is very quiet now. Yea!

In the future I plan to remove my valve cover every 50 engine hours or so and feel/inspect the rocker arm rollers for wear. Just press & spin the rollers with your fingers and check for smooth rotation. Also keep an eye on your magnetic drain plug during oil changes. Leading up to this issue I noticed an increase in metal whiskers clinging to the magnet.

Cheers

very true

i had the same thing happen to my berg at 165 hrs

replaced the rockers and no more metal bits on the sump plug
the magnet on the end is a brilliant idea .