Power Steering pump whine
Laughing Gas
Joined: Jun 2013
Posts: 1,089
Likes: 513
From: Yokosuka Japan
will have to place that in my memory banks for when i have it jacked up and working on it.
Hotshot
Joined: Mar 2014
Posts: 10,750
Likes: 1,065
From: Douglassville, PA
funny thing is,
it has never whined before I got the Winch installed.
they disconnected the passenger side battery, and did some welding on the bumper obviously, to replace the parts they cut out, to remove the old winch.
how that would effect a pump?
I have no clue.
it has never whined before I got the Winch installed.
they disconnected the passenger side battery, and did some welding on the bumper obviously, to replace the parts they cut out, to remove the old winch.
how that would effect a pump?
I have no clue.
FTE Chapter Leader
Joined: Jan 2005
Posts: 13,093
Likes: 4,704
From: Henderson, NV
It would do that because without the pump running, the steering gear forces fluid back through the return to the reservoir and then it overflows when none of that fluid is pumped out of the reservoir again.
Laughing Gas
Joined: Jun 2013
Posts: 1,089
Likes: 513
From: Yokosuka Japan
I am not necessarily sure that's the reason. the system on the bottom end has no air in it, the reason hydraulics work is the fact that a fluid cannot be compressed. Conversely you can't expand it either, unless you heat it up very hot to boiling. its basic volume will not grossly change, as such with the engine and pump off turning the wheels and having fluid move in one direction should cause it to suck fluid in form the other end. unless it was low and sucking air, the overall fluid level should not change (small adjustments for the rubber hoses flexing not withstanding. does the hydraulic system on these trucks have an accumulator? (chamber with gas, normally nitrogen, that acts as a buffer like a spring almost).
Laughing Gas
Joined: May 2024
Posts: 901
Likes: 289
From: E TN
Just about Every Ford I've worked on will push PS fluid out of the pump if you rotate the wheels with the engine off. Also just about every Ford with PS will whine, if not now it will later. On gas powered you just tell everyone you put a procharger on it with a diesel you usually can't hear the whine.
FTE Chapter Leader
Joined: Jan 2005
Posts: 13,093
Likes: 4,704
From: Henderson, NV
I was an engineering project/program manager with Eaton (now Danfoss) Hydraulics in one of my prior lives so I am aware of how hydraulics work.
Fleet Owner
Joined: Jun 2004
Posts: 25,090
Likes: 1,111
From: Rio Rico, AZ.
I am not necessarily sure that's the reason. the system on the bottom end has no air in it, the reason hydraulics work is the fact that a fluid cannot be compressed. Conversely you can't expand it either, unless you heat it up very hot to boiling. its basic volume will not grossly change, as such with the engine and pump off turning the wheels and having fluid move in one direction should cause it to suck fluid in form the other end. unless it was low and sucking air, the overall fluid level should not change (small adjustments for the rubber hoses flexing not withstanding. does the hydraulic system on these trucks have an accumulator? (chamber with gas, normally nitrogen, that acts as a buffer like a spring almost).
Top it up to the level range it needs to be while the engine is running and remind youself everyone that this is a normal occurance when dealing with pressurized systems. Either have an oversized reservoir to capture all that excess fluid in the off chance that someone likes to turn the wheel lock to lock and step on the brake pedal too every time the engine is turned off vs cleaning up the mess every time and not repeating that behavior in the future.
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Lead Driver
Joined: Aug 2022
Posts: 5,052
Likes: 1,409
From: Oologah, OK
the power steering pump is mounted on the front of the engine.
all of the Winch work was done forward of the OEM bumper mounts,
and contained strictly inside the Ranch Hand bumper material.
this is the original Warn Winch mounting
Warn Winch
this is the APEX winch, you can see it is resting on the Ranch Hand winch support cradle, well forward of the vehicle frame.
in this pix, it is not even bolted down yet, just sitting there to see how it fits, and what mods have to be done to the Ranch Hand bumper to allow my size XXX hands to access the Forward/Reverse/Free spool lever.
that hole in the bumper, where the Block Heater cable was routed, is too small for my hands to get through it...
So, I asked the installer to cut the bottom of that hole out completely, now my hands can get to the Free Spool lever.
this pix is looking down at about a 30 degree angle, you can see in the right side, the Ford Crossbar that DOT mandated to keep the truck from climbing up over a very small car.
This pix is level with the winch, showing how neatly the installer put the Ranch Hand bumper back together. You can't tell that the APEX winch was not the original winch on the truck, I love their attention to detail.
that DOT mandated crossbar is plainly visible under the bumper here.
I need to paint that crossbar, I don't like it being so prominent.
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