Give me a Brake
Hi Bob
Don't know what the problem is but none of my trucks have to have the peddle pumped to get peddle. Never have had that problem, peddle is always at the same spot. About 1-2 inch free travel on the HUP and a little bit more for the other two trucks with boosters.
With all the care you have put into braking system it is hard to think of what could be causing the problem. But I'm almost willing to bet in the end it going to be something simple that everybody will say oh of course. Some place I've got some 1930s brake system books I'll try and find them and start thinking simple.
When you say "still require one good pump to get a hard pedal." do you mean each time the brake is applied or only when you first start to drive then it works OK?
Only consistent brake problem I have had is with my HUP after it has sat for a week or so in damp weather, then the left rear wheel will grab. I've pulled the drum a couple of times, the only thing I have ever found is a light rust on the drum face. Now I know to drag the brakes for a moment under power and it goes away. None of the other drums ever do this.
Cheers Phil
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