Can anyone help, I own a Bedford Rl gun tractor with winch,Iam old it was one of a special order by he Royal Aritilery in 1970, production of he rl having ceased in 1969. The brake system is that of the MJ ttype. When I purchased the vehicle I was ignorant some basic facts regarding the operation this type of vehicle, but let my heart rule my head, as my father had driven commercial Bedfords for many years. Thus I picked the vehicle up and drove it 240 miles home with no air assist as the vehicle was not building any air up, I assumed I had a faulty guage until I came to stop on a slip road at Scotch Corner, however once I was aware of what I was dealing with it was not a problem to drive. I managed to get in touch with a previous owner, not the person I purchased it from, who advised me that some peice of equipment had been removed by the army, I found three exposed pipe ends, and blanked tthem off using 5/8 UNF sets, and hey presto I was building up air, I adjustted the unloader and that cuts in at about 75psi 105psi. The air showed up a problem with a rear brake cylinder so I changed the seals and thought all would be well however my brakes were no hard on when I had air in the system, and brake fluid was showing dripping from a nut on the bottom of the maser cylinder, so I changed it, bu the replacement is doing he same, I changed the maser cylinder as there was white corrosion on the aluminium casting of the servo, so I stripped that down and cleaned it made sure the inlet and exhaust valves were free and reassembled, hoever my brakes are stiil haard on wih the engine running and air on and brake fluid is seeping fromthe new master cylinder, although he brakes are ok hydraulic only, I am thinking I need to check the supplyies of air o the servo there are two one to a circular resovoir ank and the othe tto the inlet valve, any advice help or miricles would be grealy appreciated. Paul:nut: