it could be the load sensor valve above the axle.adjust it right off and see if brakes lock up a quiet road or take for a vollentary test at a vosa station its about £ 10 per axle
gog
June 2010
foot or handbrake?
k
May 2010
Automatic Answer
We may have found other answers which could help you.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix lorries/trucks.