Power steering whine/cavitation

[2w091]

After starting and running for a few minutes the power steering starts to whine noticeably, I've read that it may be cavitation through the pump when it's cold but it's doing it in all weather conditions. I also read the tech data a while ago and know there is a relationship between the power steering and the brake boost pump (not sure if that's the right term).
Is this something I should be concerned with as far as the pump going bad, or something else? I do have an new power steering pump as a spare.
Thoughts, suggestions?

 

[Dock Rocker]

This may sound stupid but have you checked the level of your power steering tank? Every time mine starts to whine I am a little low on PS fluid. I add just a little and it goes away.

 

[snock]

Check the level and bleed it and inspect everything in the truck that runs off of hydraulics for leaks.

http://hummer-hmmwv.tpub.com/TM-9-2320-387-24-1/css/TM-9-2320-387-24-1_1112.htm

Mine puked most of the fluid out when the fan clutch hose came off. It's no fun driving one of these trucks with that tiny steering wheel without power steering.

 

[SublimeMudTime]

I would start with googling for the document hummer_h1_manuel_utilisateur.pdf, then hit section 7-8.

There is also the document hmmwv_test-diagnostics.pdf section 9-1.

 

[2w091]

This may sound stupid but have you checked the level of your power steering tank? Every time mine starts to whine I am a little low on PS fluid. I add just a little and it goes away.

Nothing stupid about it at all, I do/did check the levels and they are fine. It doesn't start whining until after it warms up.
I'm learning this as I go, I have all the manuals and do most of the PMCS myself. I'm in the early walking stage, I started at the crawling stage................
Thanks for the reply!

 

[Retiredwarhorses]

Pumps probably going up....

 

[2w091]

Up as in bad?
I did what the -24-1 stated (thanks Snock ) and it seems to be better for now anyway. I was lucky enough to get a CCA pump via the supply system as a spare, we'll see.