Power Steering Service
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Posting Legend
Joined: Sep 2001
Posts: 30,255
Likes: 37
Power Steering Service
Any time you replace or repair a power steering system component you need to install a filter in the return line from the steering unit to the pump. This includes replacing a hose, pump, or steering box. Failure to do this is the leading cause of noisy pumps.
You can get a filter from your local parts house or from Ford.
Wix transmission/PS filter #58964
200 psi working, pressure relieved, magnetic
change yearly or 12000 miles.
Ford equivalent filter kit #XC3Z-7B155-AA
filter alone #XC3P-7B155-BA
The Ford filter kit has some fittings in it for use with transmission cooling lines. I don't use them, I just cut the cooling return line and bulge the end of the lines with a double flare tool to provide a hose retainer bead. Any time you service your automatic transmission you should install a filter also.
You can get a filter from your local parts house or from Ford.
Wix transmission/PS filter #58964
200 psi working, pressure relieved, magnetic
change yearly or 12000 miles.
Ford equivalent filter kit #XC3Z-7B155-AA
filter alone #XC3P-7B155-BA
The Ford filter kit has some fittings in it for use with transmission cooling lines. I don't use them, I just cut the cooling return line and bulge the end of the lines with a double flare tool to provide a hose retainer bead. Any time you service your automatic transmission you should install a filter also.
Post Fiend
Joined: Jan 2000
Posts: 5,860
Likes: 4
From: Metro Detroit (Redford)
Power Steering Service
Thanks Torque1st. All I did was incrementally replace most of the fluid in my wife's Aerostar with a turkey baster. The fluid was brown 
and now it is red 
. The pump is a tad noisy, kind of a whine noise. Been that way for a while. Highly suspect would be the return line filter. I will look in my Chilton's for the procedure, though I don't recall it being mentioned there.
Be nice if Auto trannies came with drain plugs and spin on filters, aye?
and now it is red . The pump is a tad noisy, kind of a whine noise. Been that way for a while. Highly suspect would be the return line filter. I will look in my Chilton's for the procedure, though I don't recall it being mentioned there.Be nice if Auto trannies came with drain plugs and spin on filters, aye?
Post Fiend
Joined: Jan 2000
Posts: 5,860
Likes: 4
From: Metro Detroit (Redford)
Power Steering Service
Looked in my Chilton and my Haynes for the Aerostar and don't see anything about the power steering filter. Suspect it comes with replacement pumps and otherwise never gets changed. Wonder if the parts store even stocks them. Anyway, where is the filter located?
