[johowell234]

Hello,

I'm in the middle of restoring a 1973 Bedford TK with a 330 diesel engine. It has air assisted hydraulic drum brakes. We've had all the wheels off and cleaned up and checked the brakes cylinders. All is well. The problem is, my park brake (which is entirely air) is no longer working. The mechanism on the back axle seems to be working because when you let air out of the system it does comes on. However, when you pull the lever by the drivers seat nothing happens. We have had the lever apart but nothing seems to be obviously wrong.

Guessing the problem is that what ever is meant to be taking air out of the system is not working? Does anyone have a different solution? Also, does anyone know if the air is dumped out of the system around the back of the lever (there seems to be a port) or does it come out from the servo?

Thanks in advance!