Posted by George Wellman in Mich [162.158.75.85] on Monday, May 07, 2018 at 14:37:46 :
I have a 1965 WM300 that is losing brake fluid....but there is no apparent leak anywhere. If I put pressure on the brake pedal, it will sink, slowly, but clearly going down.
I did have a very tired 251 replaced with a rebuilt 265 and that was the start of the problem. I think this truck might have been equipped with power brakes but I am not sure. It looks like there is a vacuum diaphram up under the cab area...could this be leaking fluid internally? If so, can I just bypass that as I don't need power brakes.
thanks,
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