GenIII (LS1, Vortec, whatever!) Help: Power Steering Pressure? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Project1970 · 03-02-2005, 11:30 PM

I was THIS close to driving my truck for the first time since July tonight.

While backing it out of the bay, there was no power steering; we added fluid, went another two feet and noticed a puddle of foamy power steering fluid. It appears to have blown out the seal where the shaft goes into the gearbox.

So, does anything special need to be done to the power steering pump and/or the gearbox? Is there a restrictor we can put in to lower the pressure of the pump? Or is there a gearbox that will take the higher pressure?

HuggerCST · 03-03-2005, 12:03 AM

Are you sure it didn't just burp out the (foamy) fluid because of air in the system? I had this problem not long ago. I finally had to fill it while the engine was running, and work the air out of the lines before I turned it off.

jhow66 · 03-03-2005, 12:04 AM

If you need a seal Autozone has them--Powercraft # 7095-easy to install.

Project1970 · 03-03-2005, 12:16 AM

We added the fluid while it was running.

On the other hand, I also have a sneaky suspicion we may have mounted up the lines backwards; it wouldn't be the first set of lines we did that to. Is this diagram I just made using someone else's photo correct?

And if we DID hook them up backwards, does that mean it's probably just that seal?

NPilot1975 · 03-03-2005, 01:11 AM

That looks correct to me. The top (referencing the hoses, not the connections) line is definitely the pressure line (crimped hose) and the bottom line is the return line (can just barely see the hose clamp on the hose).

Project1970 · 03-03-2005, 01:34 AM

That's what I thought...if it is backwards, that'll at least make me a bit happier that the repair is cheaper.

03-02-2005, 11:30 PM	#1
Project1970 14.1 @ 96MPH Join Date: Jul 2001 Location: Mesa, AZ Posts: 2,811	GenIII (LS1, Vortec, whatever!) Help: Power Steering Pressure? I was THIS close to driving my truck for the first time since July tonight. While backing it out of the bay, there was no power steering; we added fluid, went another two feet and noticed a puddle of foamy power steering fluid. It appears to have blown out the seal where the shaft goes into the gearbox. So, does anything special need to be done to the power steering pump and/or the gearbox? Is there a restrictor we can put in to lower the pressure of the pump? Or is there a gearbox that will take the higher pressure? __________________ Project1970 - LS1 Swap Complete!

03-03-2005, 12:03 AM	#2
HuggerCST Registered User Join Date: Jul 2001 Location: North Louisiana Posts: 4,501	Are you sure it didn't just burp out the (foamy) fluid because of air in the system? I had this problem not long ago. I finally had to fill it while the engine was running, and work the air out of the lines before I turned it off. __________________ Wynne 70 CST short fleet Hugger orange & white, 350/350, ps, pb, air, tilt, tach/vac/speedwarning, original buckets, AM/FM, oak bed floor, shoulder belts, 3.5"/5.5" drop, 20" American Racing VN425s. Build thread 53 Chevy shortbed 69 Camaro Click here to subscribe Chevy GMC International Truck Club Louisiana Charter Member http://www.louisianaclassictruckclub.com

03-03-2005, 12:04 AM	#3
jhow66 Registered User Join Date: Jun 2002 Location: Knoxville Tenn. Posts: 3,058	If you need a seal Autozone has them--Powercraft # 7095-easy to install. __________________ 56 Chevy Bel-Air 2dr. HT (purchased new) 71 Chevy Cheyenne SWB PU (502HO) 65 GMC short bed step--work in progress and my gofer

03-03-2005, 12:16 AM	#4
Project1970 14.1 @ 96MPH Join Date: Jul 2001 Location: Mesa, AZ Posts: 2,811	We added the fluid while it was running. On the other hand, I also have a sneaky suspicion we may have mounted up the lines backwards; it wouldn't be the first set of lines we did that to. Is this diagram I just made using someone else's photo correct? And if we DID hook them up backwards, does that mean it's probably just that seal? __________________ Project1970 - LS1 Swap Complete!

03-03-2005, 01:11 AM	#5
NPilot1975 Senior Member Join Date: Aug 2002 Location: Plymouth, MA Posts: 891	That looks correct to me. The top (referencing the hoses, not the connections) line is definitely the pressure line (crimped hose) and the bottom line is the return line (can just barely see the hose clamp on the hose). __________________ 1972 Blazer body...need to get a thread started for the rest of the story

03-03-2005, 01:34 AM	#6
Project1970 14.1 @ 96MPH Join Date: Jul 2001 Location: Mesa, AZ Posts: 2,811	That's what I thought...if it is backwards, that'll at least make me a bit happier that the repair is cheaper. __________________ Project1970 - LS1 Swap Complete!



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