You need to supply more info, ie what type of valve gear has it got, is it just a manual spool with a lever on it, is it cable to a lever, is it an electic solinod spool or and air opporated spool?
At a guess id say the spool has stuck but for what reason I cant say.
Darren Brown
December 2010
I can answer this question...
how do i repair my tipper trailer when it will not lower ?
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix lorries/trucks.