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Discussion Starter #1
Has anyone been able to source the seals for the steering damper. I have searched all over without any luck.

Thanks,
 

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I have used skf 3939 on my 99 .
I had to have my napa dealer special order them from back east.Freight was more than the seals but still way cheeper than new dampner.
Hope this helps.
Slade2
p.s. the box says cr 10x20x7 hmsa7 r
 

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Discussion Starter #3
What weight/type oil did you use?

Thanks,
 

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I have atf in now but it is to stiff when its cool out. If i remember correctly i used marvel air tool oil the first time and it was about right feel but it leaked out ofter about 20,000 miles.
Slade
 

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Don't waste your time resealing a stock stearing damper because it isn't a good damper to begin with. I suggest a Hyperpro variable. I installed one, last year, and the results are remarkable. Scarified grooves no longer exist. Steel bridges aren't noticeable. It does take a while to get the settings adjusted to your riding style, but IMHO the Hyperpro is as good as it gets and well worth the money it costs a the time it takes to set it up properly.
 

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Hi Guys

I have 2004 and how to fill it in i have ride 40389.127 mi.to be exact,, i live in Thailand so i need to do everything by my self,, no BMW good service here,,Im originally FINNISH rally driver
my damper seems to be very loosen and not getting stiff at all even it's tighten up all the way in (Clock wise tighten) :confused:
 

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I have used skf 3939 on my 99 .
I had to have my napa dealer special order them from back east.Freight was more than the seals but still way cheeper than new dampner.
Hope this helps.
Slade2
p.s. the box says cr 10x20x7 hmsa7 r
Good day sir, I just bought the seals that you mentioned, the number upgrades now to10x20x7 hmsa10rg. I bought 6 of them. but they do not work. I tried many times, but each time I put hard presure on the dampner the oil spurts out. I am a retired BMW master tech with 45 years of doing this. What am I doing wrong. I have to fix it now, I got so pissed off I went and bought a new gtl 1600. So I am now selling the LT. The seal brand is also an skf.

Joe Krebs
 

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Good day sir, I just bought the seals that you mentioned, the number upgrades now to10x20x7 hmsa10rg. I bought 6 of them. but they do not work. I tried many times, but each time I put hard presure on the dampner the oil spurts out. I am a retired BMW master tech with 45 years of doing this. What am I doing wrong. I have to fix it now, I got so pissed off I went and bought a new gtl 1600. So I am now selling the LT. The seal brand is also an skf.

Joe Krebs
That doesnt seem right...i get pissed off all the time and i never get a new bike out of it
 

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I rebuilt my 2000 damper with harwell seals. 20x10x7.....$5.34 each...used 7.5wt fork oil. Fill slowly and actuate to insure all air is out....reassembled and works great. I have two others as spares. Very easy to do with those seals
 

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Good day sir, I just bought the seals that you mentioned, the number upgrades now to10x20x7 hmsa10rg. I bought 6 of them. but they do not work. I tried many times, but each time I put hard presure on the dampner the oil spurts out. I am a retired BMW master tech with 45 years of doing this. What am I doing wrong. I have to fix it now, I got so pissed off I went and bought a new gtl 1600. So I am now selling the LT. The seal brand is also an skf.

Joe Krebs
I took mine apart a while back to flush (the little amount of fluid remaining), clean and refill.
It's working / holding up ok but has a slight weep.

When I watch the damper shaft in action, I can see a slight up & down movement.
Tells me something else inside the damper is worn.
Either the piston seal, piston to housing clearance, etc.
I'll have to break it down completely to inspect.

Not going to do this until I source the piston seal.

My guess is those that have put new seals in and still have a leak may have this issue.

Ken
 

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I just ordered seals for my bike. When I took the old seal out I found it to be a KACO lip seal. The number was OHWA 10 . 20 . 7/8.5 VGF01 . This is the original seal that came with the bike. I called Accent Bearing in Addison, Il. and told them what I need for seals for the steering damper. They told me they could get that exact seal. I ordered two but will report back to the group to let you know price and how I like them.
 

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I just ordered seals for my bike. When I took the old seal out I found it to be a KACO lip seal. The number was OHWA 10 . 20 . 7/8.5 VGF01 . This is the original seal that came with the bike. I called Accent Bearing in Addison, Il. and told them what I need for seals for the steering damper. They told me they could get that exact seal. I ordered two but will report back to the group to let you know price and how I like them.
How come I can not seem to find these seals that you are refering to or am I just not seeing the numbers right I can not pull them up because I am thinking about going thorugh mine or somebody can refer me to thier seal of choice
 

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For the european riders - you can find the original seal kit here :

.: Rinaldi Sospensioni :.
I used Google translate to read the page.

After translation -
The picture next to "Steering damper BMW mod. 2, interior details." looks like either a break down or it may be all the parts included in a rebuild kit.



All I really need would be the two seals, the four piston seals, and the two o-rings.
I could not find the option to order, what may be included, or a price.

aquachrono, Could you help with this?

Thanks, Ken
 

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For what its worth I just rebuild a damper for a guy and used these seals BocaBearings . They were 6.95 each and although they were not exact replacements they appear to be working just fine. I replaced no other parts as all the little o-rings were reusable.
 

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Ken, I am not speaking italian but I asked a friend which does , to call monday the Rinaldi shop in Italy and request the prices for seals and o-rings, and options for payment and shipping. I will let you know as soon as possible. I am also interested in buying a set . My steering damper is not leaking yet but is better to have the parts .
 

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For what its worth I just rebuild a damper for a guy and used these seals BocaBearings . They were 6.95 each and although they were not exact replacements they appear to be working just fine. I replaced no other parts as all the little o-rings were reusable.
John sense you know what seal it looks it might be do you know if this would be the right bolt for steering damper in case it breaks like I here it can a lot of times View attachment STEERIG DAMPER BOLTS.pdf
 

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Gary,

I damaged the original torx head bolt and ended up drilling it out. I did replace it with an Allen head M8 x 45 from the local hardware store. Tried a hex head but that restricted the movement of the damper.
 

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For european riders,
an adress in Germany for the original seals:
[email protected]

The seal type is:

Typenbezeichnung KACO 73839099
10x20x7
Innendurchmesser : 10mm
Ausendurchmesser: 20mm
Höhe: 7mm (8,5 inkl Schutzabstreifer)

I bought a pair 3 yers ago. They work OK since.

Bruno
 
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