Adler MB250 Motorcycle Front Forks

The Adler front forks are of the leading link type with integrated hydraulic dampers.
The damper body was extended by 30mm for the swing-arm Favorit
and Sprinter models to raise the front end of the bike.

 MB250            Favorit   

  front forks          front forks (German)     

                       Click on an image to enlarge it.

FRONT FORK BOTTOM RESERVOIR
Use any SAE 50 oil or any multi-grade with an upper spec of 50 eg 20W-50.

FRONT FORK TOP HYDRAULIC RESERVOIR
The Adler Handbook recommends "special shock absorber fluid"
with a Viscosity of 3.76 Engler at 50 degrees Centigrade.
(3.7 degrees Engler is approximately equal to a viscosity
of 27 cSt which is about 10W SAE).
Use SAE 10 fork oil available from motor cycle shops.
Click here for a table of viscosity against Engler number.

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Click here for Adler Front Forks rebuild notes.

Click here for Several German front fork rebuild pictures.

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Here are the lengths of the various FRONT SUSPENSION SPRINGS:


Click on the image to enlarge it.

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Few Adlers have not hit something while being ridden across paddocks during their mid-life.
A suitable jig for checking the front forks is as follows: .....in progress........

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