Öhlins FG9050 oil level

BARONROJO

I've been overhauling mi 851 Öhlins fork today. I've found several oil capacities both in Ducati and Öhlins service manuals but not the more accurate oil level.
I've set it to 120 mm but I think it's too much for this fork.

Does anybody if there's some specification?

My fork came from a track race bike and is a bit modified. I've found gum deposits in the valves and a different shim stack in the compression valves with three shims of each one of the two sizes at the middle of the stack.

Rüdiger 900R

410cm³
says my
Ohlins_FG9030-9050-9100-9120_Workshop_Manual

Mr.R

My FG9050's have been modified by Maxton, but here's the air gap/instructions given by them.

Airgap measured with the forks fully compressed, the springs and the spacers removed...

130mm.
These forks work a treat I can't fault them in any way.

Steve R

BARONROJO

Thank you boys. Yes, I have the capacity spec from the manual but with 410 cc Air gap seemed to large to me. I've set them to 120 mm and spring becomes a bit too harsh.
So after Mr. R's advice I think I'll start at a conservative 140 mm and will add some more if necessary.
My fork has always behaved awfully. I think (hope!) this overhaul having reset the compresión valves to original specs (and a proper cleaning of every oil passage) will make my bike perfect as in every other respect she is.

stiglarsenDK

Service manual , pleeese

Gents

Can one of you share the service manual(s) please ?

BR STIG

Rüdiger 900R

I upload the Manual in a new Post

BARONROJO

It's un the files section but thank you anyway for your help!

el'diablo

stiglarsenDK wroteGents Can one of you share the service manual(s) please ? BR STIG

It suits you?😉

el'diablo

Ohlins_FG9030-9050-9100-9120_Workshop_Manual.pdf

7.60MB

BARONROJO

Problem sorted!!! Air gap at 120 mm with 410 CC of oil as the service manual states.

The problem was in the compression valves as the two middle shims were doubled. Now I have a great fork that performance as such!!!

900SL

Fg9050...

Always worth having a good look inside... these things are like a fine watch internals and can easily be assembled incorrectly ...

Rüdiger 900R

BARONROJO wroteProblem sorted!!! Air gap at 120 mm with 410 CC of oil as the service manual states. The problem was in the compression valves as the two middle shims were doubled. Now I have a great fork that performance as such!!!

I can confirm 410cc and 120mm, did the same last week