power steering problem PLEASE HELP!

[knightowl73]

Well i decided to finally fix the leaky power steering pump yesterday but it didnt go that well. i found out that i have a 73 power steering pump, so the nice one my bud gave me wouldnt work. i found one that would, rented the tool, put it all together, and went to return the tool.
well on the trip there it was kinda workin at first, then was fine by the time i got to oriellys. just after returning the tool and pulling out of the parkin lot my power steering just went out at once. damn near twisted my wrist tryna catch it.
so this mornin i went and bought a new power steering pump and put it on and still nothin. i blew out both lines after r taking them off and still nothin. the original pump worked fine just leaked, so now im outta 50 bucks and instead of a leak i just dont have any power steering at all. and i swear it is harder to turn than any manual steering old truck ive ever driven, its almost as if its fighting me when i try to turn. even considered maybe puttin the hoses on wrong. but its not even possible. has anyone ever had this problem before? the only thing left is that the steering box is bad, but would it just go out all of a sudden like that? i figured its supposed to get worse over time thing.
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[HOGDADDY]

Did you turn the steeering wheel lock to lock to bleed the air out?

[irishman999]

Have you watched the movie "Christine"? Find a track dozer and park it on top of it because that sounds wild. I just put a power steering pump in my 85 with no issues, not even bled.

[knightowl73]

yeah ive never heard of it before and my dad hasnt either. right now im just riding with the now broken pump mounted with no pulley or belt.ll attempt trying another pump hoping it is just coincedence but i dont really think itll fix it. and i did turn it lock to lock repeatefly and even hoped divng it might help, but it never got better apparently i dont have many other things to checkout, so after the second new pump is on if it doesnt fix it i guess ill have to find another steering box and hope i dont end up with a sloppy one.
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[knightowl73]

will the steering box from a 91 4wd suburban work on my truck? my buddy has one he is using for parts he said i could have whatever i wanted off it. i already grabbed everything i thought was worth somethin to me, but its a freebie if itll work on my '86 c10 frame

[72lb4x4]

You should probably start checking things before throwing more parts at it. The inside of a pump is pretty simple so I don't see one not working if its got fluid.

Maybe try taking the low pressure hose end off the pump and let it push fluid into a 2 liter pop bottle for example to see if fluid is moving.

[HOGDADDY]

Maybe you got trash from old lines in there. The hoses wear from the inside. did you use new hoses or re-uses old ones?

[knightowl73]

yes i have figured out that i have pressure already when i cracked the hose at the steering box and crunk it up and made that big freakin mess.

and i reused the old hoses, but this last time i put a new piece for the return, and i blew out the pressure one, didnt seem like a retriction there at all.