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I have a Motorhome with a 1988 32’ John Deere Chassis with a Ford 460 and the 'hydroboost' Brakes. It seems that the Electric Break boost motor has stopped coming on when the break pressure drops. I'm trying to trace the wiring to see if a switch or wire connector is loose or corroded. I cannot find any diagram as to how this all works. Any thoughts would be appreciated.
Jack
I have a Lincoln Mark 7 1987 it has a hydro booster and right now it has no power i can hardly stop i thought it was the relay i replaced it and it still dont work
Relay? What relay. I am having the same trouble and have been thinking I need to replace the booster system altogether. Is there a fuse for the relay? I have no manuals available to me.
email Jack White
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