hi my handbrake tank does not fill with air ??.. daf cf75 help please
alan
February 2017
hand brake relay valve had enough air to release the air booster
vinay
July 2013
The air processing unit APU is faulty common problem with Daf
The Pilgrim
January 2011
if sure the air dryer is ok check air is getting to the park brake relay valve ,and that it is getting a signal from the handbrake lever and air is getting to the brake chambers ..i would also check the condition of the air dryer cartridge ,jus in case the compressor has a problem and is causing the air dryer to fail ...port 25 feeds the hand brake and has a NRV that sticks.you can also remove the bottom bowl ,remove the 2 plastic filter plates and put the bowl back on
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