Power steering fluid over flowing

Austin Diagnostician Pennsylvania Posted   Latest  
Unsolved
Braking
Chassis
2012 Ford F-450 Super Duty 6.7L (T 300hp) — 1FD0X4HT8CEA67787

I think i already know the answer but im curious if anyone has ever seen this before. 

truck came in with no powersteering, no power brakes (hydroboost system). customer installed 2 different Ford powersteering pumps. no change. 

put a new aftermarket hydrobooster and power steering and brakes came back. pump was a little noisy so i put it under a vacuum to get the air out. no more noise. after test driving the fluid level grew and began over flowing. 

before i put another hydro booster on this thing is there anything i could be missing? 

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John Owner
California
John
 

If that's the one with a filter on the reservoir outlet, the filter being clogged would give you those symptoms.

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Steven Owner/Technician
Illinois
Steven
 

Same thing I thought of. Saw this a few times working in Ford police interceptors. Change the reservoir.

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Austin Diagnostician
Pennsylvania
Austin
 

Ill take it off tomorrow morning and check it out. Thanks.

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David Owner/Technician
Virginia
David
 

I had this problem on 2014 gas v 10 first pump failed 3800 mile replace again 10 mouths later. Ford warranty pump a soon as I put another pump on started pushing out fluid and getting hot. I remove the solid metal lines at the booster and found a peace of plastic blocking off the line. Apparently ford puts plastic in the line before bending it in there bender and then removes it after the bend…

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Helpful
Mark Engineer
Colorado
Mark
 

David: Great observation on a piece of plastic inside the power steering hose/line. We engineers often add attenuators inside the hoses/lines to quiet/dampen noises. “In the good old days” we used cable cut to a certain length to cancel noises. Google search this (I think it was a mechanical engineer's doctoral thesis). Search": "Plastic tuners for power steering pump noise reduction James…

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Interesting
David Owner/Technician
Virginia
David
 

In this case it blocked the hose and no fluid could pass thru and this was and all original parts no after market

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Stuart Mobile Technician
Illinois
Stuart
 

I had the same issue but with a GM Hydroboost and ended up replacing all of the lines. One of them must have been restricted internally

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Justin Mobile Technician
Utah
Justin
 

I have found in the past when the suction side of the pump can suck air in the from outside it will foam up the fluid and overflow. Hard hoses and clamps that can’t correctly tension the hoses are possible spots. I have found orings also that have gotten hard and square that won’t seal. They don’t express as a liquid external leak. I also find these more often when the weather is cold.

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