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Old 01-21-2009, 10:32 PM
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Steering on 1974 Chevy Blazer

I finally replaced my original power steering gear box and pump on my 1974 Chevy Blazer. I know that it hasn't been replaced before cause I purchased it new in Hollister Ca and it hasn't been out of my sight. Plus, it started going down the road like a blood hound looking for a trail.
Well, I replaced them both and not too sure that I like it. I couldn't believe it after I bleed the air out and let it down off of the jacks, it turned just like it was still on the jacks with the tires off of the ground. Well, it does go straight, however, it has no tension and it is hard to keep straight due to the wheel moving like the truck is floating in the air. I have to brace my elbow tight to the arm rest and don't move my hand.
So, what I am wondering, is there a way to put pressure onto the system like lowering the output on the pump and give me less pressure to the gear box. Or, is there a way to get it to have a self centering action so that I can quit floating down the road?

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Old 01-21-2009, 11:15 PM
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On the pressure side on the back of the pump there is a large HEX that the line fitting threads into. Behind that is your pressure relief valve. A spring change I think is all that you'd need.

Hopefully others can chime in on this.
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Old 01-22-2009, 12:10 PM
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Power steering option

Heidt's makes a Adjustable proportioning valve, part number PS-101 that might help you with this problem.
I got one for my Model A when I had a similar problem.
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Old 09-22-2009, 08:59 PM
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there aint no newer discussion on this topic! whaaaa!

dog, you ever try this spring thing? my truck is squeeling like a stuck piglet, has been for a while now it's just not turning sometimes when i go slow

i guess i got to remove the pump to play with this spring right? i have 36" tires on ten inch wheels. i think i killed off my pump. what direction should i go with this spring? lighter or harder? wanted to post something new on this but found this from jan. hey it's the same year at least! my pump and chassis is 1979.

and whaddya think @ this thought my mech. friend said: getta double belt pully instead of my single. any merit?? thx
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