It would help a lot if you told us what truck you have , how old and if possible what hydraboost you have. on the bendix units used on medium duty trucks there is an electrric back up pump for the hydraboost. Smaller gm units used an accumulator. When you talk about pump I assume you mean power steering pump which supplies hydraulic pressure to both the steering box and hydraboost when running. From what you describe it is most likely a power steering pump issue.
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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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