BEFORE throwing $$$$ check the actual vacuum. Have to look up the "spec.", I would GUESS 15", give or take.
This will show that the vacuum pump is working, reservoir is intact, the lines aren't leaking, and that the booster hasn't failed in a way that it's leaking and vacuum can't be built up.
Some years back a customer with a "tonner" had poor brakes and the light lit on the dash, turned out to be that the vacuum reservoir (a Ford "tomato juice can" special) had a pinhole rusted in it.
I don't know if yours is set up that way/what reservoir is used, but in any case I would start with a vacuum gauge.
Also, is the brake/low vacuum light in the dash working?
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Today's Featured Article - The Nuts and Bolts of Fasteners - Part 2 - by Curtis Von Fange. In our previous article we discussed capscrews, bolts, and nuts along with their relative hardness and thread sizes. In this segment we will finish up on our fasteners and then work with ways to keep them from loosening up in the field. Capscrews, bolts and nuts are not the only means of holding two parts together. When dealing with thinner metals like sheet tin, a long bolt and
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