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05-10-2022, 10:49 PM
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#1 |
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Blue 67
 Join Date: Apr 2004
Location: Western WA
Posts: 1,169
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PS hose connections
Hello:
I have converted to power steering and Hydroboost as part of my 67 LS swap but I am having hard time to bleed the PS pump. It keep humming and the fluid foams (cavitating, I guess). It is a new (rebuild) ACDelco pump. I am wondering if I have connected the return lines incorrect, if that matters. The pump has two return lines and one high pressure line, one return line sits higher than the other. Can anybody tell me the return line from steering box connects to the lower return line or the upper?
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1953 GMC 3/4 ton: current project 1967 C20: 5.3 voretc with T5 conversion, 4 wheel 8 lug disc brake 1972 Nova: my 4 door sport sedan! 5.3 voretc + T5 conversion. drivable project, FUN!! 1979 Camaro Z28: 5.3 vortec conversion with build TH350: drivable project, Fun to drive 1992 Camaro RS convertible (Z28 clone): 5.3 conversion with build T5: on going project 2005 Silverado 2500, 4x4 Duramax, original owner |
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05-10-2022, 10:53 PM
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#2 |
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Senior Member
Join Date: Dec 1999
Location: TX
Posts: 1,519
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Re: PS hose connections
From the steering gear should go to the lower return.
From the hydroboost to the upper. Having them swapped will cause bubble/foam... |
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05-10-2022, 10:55 PM
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#3 |
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Senior Member
Join Date: Dec 1999
Location: TX
Posts: 1,519
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Re: PS hose connections
Check out this video. Mainly the first couple minutes. He has a great technique for bending the lower tube to clear the frame.
https://www.youtube.com/watch?v=QTT4JowH3iI |
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05-11-2022, 07:48 PM
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#4 |
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Registered User
Join Date: Apr 2012
Location: Chatt Tn
Posts: 957
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Re: PS hose connections
you have to jack up the wheels, and slowly turn the steering side to side without the engine running. only way to bleed all the air out. if you do it running it will just cavitate and continue to aerate the fluid. also doesn't matter where the returns are.
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88 military v30 crewcab shortbed 5.9 cummins, nv4500, 205 86 k30, 89 diesel burb, 76 gmc pathfinder 71 longbed 5.3 4l80 http://67-72chevytrucks.com/vboard/s...d.php?t=522535 |
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05-12-2022, 09:43 AM
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#5 |
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Blue 67
Join Date: Apr 2004
Location: Western WA
Posts: 1,169
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Re: PS hose connections
Thanks for all the replies.
It seems I have connected it correctly. I just need to get the air out.
__________________
1953 GMC 3/4 ton: current project 1967 C20: 5.3 voretc with T5 conversion, 4 wheel 8 lug disc brake 1972 Nova: my 4 door sport sedan! 5.3 voretc + T5 conversion. drivable project, FUN!! 1979 Camaro Z28: 5.3 vortec conversion with build TH350: drivable project, Fun to drive 1992 Camaro RS convertible (Z28 clone): 5.3 conversion with build T5: on going project 2005 Silverado 2500, 4x4 Duramax, original owner |
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05-18-2022, 09:37 AM
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#6 |
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Registered User
Join Date: Oct 2005
Location: Northern Arkansas
Posts: 1,127
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Re: PS hose connections
I just went through this on an S10. As others have stated.......jack it up. While NOT running turn the wheels lock to lock about 5 times. Start it up at idle and do it adain........Repeat about 5 times. Let it sit for a day and try again. Repeat if necessary. Mine seems to have gotten all the air out on the second day try.
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