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aharmon
New User
Mar 3, 2015, 5:06 PM
Post #1 of 4
(2530 views)
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Need help. I changed my power steering pump on a 2002 Lincoln LS and after bleeding the fluid, I started the vehicle and the fluid became frothy. Full of air. Do I have to flush out the system now, or is there something else I need to do? Thank You, Alan
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Discretesignals
Ultimate Carjunky
/ Moderator
Mar 3, 2015, 5:15 PM
Post #2 of 4
(2520 views)
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Re: power steering
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What did you use for fluid?
There is actually special tool that help with getting the air out of the system. There is also a service procedure. If you have any leaks on the return side of the system, it will draw air into the system through those leaks.
1. WARNING: Do not mix fluid types. Any mixture of an unapproved fluid could lead to seal deterioration and leaks. A leak could ultimately cause loss of fluid, which could result in a loss of power steering assist.
CAUTION: Do not overfill the power steering fluid reservoir.
NOTE: A whine heard from the power steering pump may be caused by air in the system. The power steering purge procedure must be carried out prior to any component repair for which power steering noise complaints are accompanied by evidence of aerated fluid and after installation of any new power steering system components (gear, hose, etc.).
Remove the fluid reservoir cap and check the fluid.
^ Using the special tool, tightly insert the stopper into the fluid reservoir.
^ Start the vehicle.
2. Apply maximum vacuum for a minimum of three minutes at idle. Maintain maximum vacuum with the source.
3. Remove the special tool.
4. WARNING: Do not mix fluid types. Any mixture of an unapproved fluid could lead to seal deterioration and leaks. A leak could ultimately cause loss of fluid, which could result in a loss of power steering assist.
Add fluid to the appropriate level.
^ Use Motorcraft MERCON Multi-Purpose (ATF) Transmission Fluid XT-2-QDX or equivalent meeting Ford specification MERCON.
5. Using the special tool, apply and maintain maximum vacuum.
6. CAUTION: Do not hold the steering wheel against the stops for more than three to five seconds. Damage to the power steering pump will occur.
Cycle the steering wheel from stop to stop every 30 seconds for approximately five minutes.
7. Remove the special tool and install the fluid reservoir cap.
8. WARNING: Do not mix fluid types. Any mixture of an unapproved fluid could lead to seal deterioration and leaks. A leak could ultimately cause loss of fluid, which could result in a loss of power steering assist.
Check the fluid level and for leaks at all connections. If the power steering still shows signs of aeration, repeat this procedure.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
(This post was edited by Discretesignals on Mar 3, 2015, 5:16 PM)
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aharmon
New User
Mar 3, 2015, 5:24 PM
Post #3 of 4
(2517 views)
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Re: power steering
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I used Lucas Power steering fluid w/ conditioners. Said good for all systems. The frothing seems to have dissipated. Should I just change all the fluid with Mercon as recommended by manufacturer?
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Discretesignals
Ultimate Carjunky
/ Moderator
Mar 3, 2015, 5:32 PM
Post #4 of 4
(2509 views)
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Re: power steering
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If Lucas's warranty will pay for damages created by their fluid, you might have your bases covered if something goes wrong.
Manufacture does stipulate which fluid should be used 4 times in that procedure. Mercon V ATF. Your call. If it was one of our customers' cars, it would be getting the recommended fluid by the manufacture.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
(This post was edited by Discretesignals on Mar 3, 2015, 5:34 PM)
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