Power steering pump question

Dana67Dart said

The pump should have a pressure relief valve, and/or the gear should be able to bypass fluid at both stops. You can hear it in normal usage.

It would seem that there is a problem with that system.

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Agreed.
Although I've never personally experienced this, excess hydraulic backpressure is the only thing I can think of that would make the pump completely stop turning at each end of the steering's travel; which to me would indicate that the relief system is not functioning- either a stuck/sticky valve or possibly a pinched return hose, although the return hose seems less likely.