Power steering question(s)
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Mountain Pass
Joined: Aug 2006
Posts: 170
Likes: 6
From: Northern DFW, Texas
Power steering question(s)
Once a line has been replaced(high pressure line) - and the tank has been "topped off" with only a few ounces. That's all that would fit -so far. I have been driving it for a day and now "this morning" and the whining noise IS subsiding. Is there a way to purge the system so the cavition will filter out? The line replaced goes from brake body(on firewall) and side of tank on the pump(it has that tiny c-clip inside to hold that odd compression fitting together.)
Posting Guru
Joined: May 2010
Posts: 1,467
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From: Midland, MI
Turn the wheel lock to lock and bump it in each corner a few times. Just gotta cycle the steering gear back and forth a few times to get the air out. You said the noise is going away so just keep driving it and keep an eye on your fluids. You should be fine.
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Mountain Pass
Joined: Aug 2006
Posts: 170
Likes: 6
From: Northern DFW, Texas
Well, it took nearly 15 minutes, Bill. I did full wheel spins in both directions over 5 times; then checked level it dropped a few ounces and so I decided to also pump-cycle the brake pedal as well -during the second cycling of the steering wheel some 7- 10 times. That was weird how much noise it made during this stage ... FYI the PS system for this truck has a long route the fluid travels: from pump to brake valvebody@ firewall, from firewall to either rack-n-pinion or from cooler, then to the other and finally to the return side of the pump where it starts all over again? 
Well now its much quieter and there is still a bit-o air in the lines.
Well now its much quieter and there is still a bit-o air in the lines.
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Mountain Pass
Joined: Aug 2006
Posts: 170
Likes: 6
From: Northern DFW, Texas
...I'm telling ya, right?? The PS cooler has something like 7-8' total (in and out) by itself.... And it's a stock system.
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Senior User
Joined: Nov 2009
Posts: 296
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From: Roseville, CA
Glad to hear you got it. Mine still makes a little noise at full crank but I always try to avoid that as I have heard prolonged full crank blows lines. I have found that I can not hear it at all if I open my exhaust!
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From: Stevens Point, WI
You guys should have heard my wife complain after doing the power steering flush. I had her do the steering and brake pumping while I filled the fluid. I had to keep telling her make sure it goes lock to lock!
Replacing a line shouldn't leave air bubbles very long. Have you let the truck sit for some time yet? Maybe the fluid got oxygenated and the air bubbles were suspended in the fluid.
Replacing a line shouldn't leave air bubbles very long. Have you let the truck sit for some time yet? Maybe the fluid got oxygenated and the air bubbles were suspended in the fluid.
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Joined: Nov 2010
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You guys should have heard my wife complain after doing the power steering flush. I had her do the steering and brake pumping while I filled the fluid. I had to keep telling her make sure it goes lock to lock!
Replacing a line shouldn't leave air bubbles very long. Have you let the truck sit for some time yet? Maybe the fluid got oxygenated and the air bubbles were suspended in the fluid.
Replacing a line shouldn't leave air bubbles very long. Have you let the truck sit for some time yet? Maybe the fluid got oxygenated and the air bubbles were suspended in the fluid.
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