I had this once on a transit van and the brake fluid had lost its viscosity, it just went one day, i replaced the brake fluid and it was fine, like JD said more info would help.
james
December 2009
Tell us a bit more please.
E.g. what are your air pressure gauges (on the dashboard in front of the driver) reading?
Was this on the road or during a DOE or MOT?
Was it complete brake failure or just on one side/ front or rear?
JD
December 2009
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.