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Bad power steering pump or hydroboost?

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Old Mar 18, 2021 | 08:29 PM
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Johnkimble
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Bad power steering pump or hydroboost?

Hello,

I've my had 1975 F250 parked for the last few weeks. It's been upgraded to a Saginaw pump, modern power steering setup and hydroboost conversion. I went out today and started it up. While in the driveway as I depressed the brake pedal, I felt a pulsing and chattering. When I try to turn the wheel it feels as if I have no power steering at all while at the same time hearing a chattering/grinding from the engine bay.

Brake fluid was fine. Power steering fluid was a bit low so I topped it off. Ideas?
 
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Old Mar 20, 2021 | 11:05 AM
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mark a.
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I would put a gage in the high psi line and see what the pump is doing.
 
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