On Friday, 11 May 2018 16:06:51 UTC+1, rick wrote:
Update on this ...
Replaced the actuation rods,as the adjuster was corroded solid.

Set that up so correct clearances .... again brakes activating fine,
handbrake holding fine - and in correct 90 degree position.

However auto-reverse still not working.

Anybody any clues.

On 07/05/2018 08:39, rick wrote:
Have a twin axle trailer.
Each year service hubs ... wash out all grease, repack, new seals, clean
drums etc.Â* Adjust brakes
The reverse override link & spring are not removed during serviceÂ* (AlKo
instructions)

The brakes are AlKo auto reverse type.
Going fwd brakes work fine, stationary handbrakes applies and holds.

In reverse after a short distance (presume until hitch damper completes
travel) the brakes lock on.
If I unhook trailer and manoeuvre by hand it will reverse with no issue
.... so only a problem when push rod activates.

Any suggestions ?

show us a pic/diag of the mechanism


NT