Power steering. Again..
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Fleet Mechanic
Joined: May 2006
Posts: 1,696
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From: S.W. Florida
Power steering. Again..
Guys, I'm unhappy with my low to no speed PS performance. Cordoba clipped, 351W with the large roundish Ford PS pump with the little spout filler neck and steel dipstick ( recently replaced ) and fully bled. Everything is fine at speed, the thing struggles to turn the wheels when stopped tho. Anyone else have this combo/ issue? I did a search cuz I remember this being discussed previously, but could find no definitive answers with respect to changing pulleys, flow restrictors, etc.. Thanks, and Merry Christmas!
Ford Parts Specialist
Joined: Nov 2006
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From: Simi Valley, CA
Originally Posted by raerjim
Guys, I'm unhappy with my low to no speed PS performance. Cordoba clipped, 351W with the large roundish Ford PS pump with the little spout filler neck and steel dipstick ( recently replaced ) and fully bled. Everything is fine at speed, the thing struggles to turn the wheels when stopped tho. Anyone else have this combo/ issue? I did a search cuz I remember this being discussed previously, but could find no definitive answers with respect to changing pulleys, flow restrictors, etc.. Thanks, and Merry Christmas!
1-Does your pump (made by Eaton) have the separate reservoir mounted atop the pump? (originally used 1953/64)
2-Or is the reservoir enclosed within the pump? (1965 and later)
The dipstick filler neck is part of the top cover of the reservoir on the first pump I described.
Guessing it's the second pump, so you'll need a H/D pump used on F350's. It mounts the same, just different internal parts.
Have another question...how does the pressure hose fit to the pump...is there a tube on the end of the pressure hose with an O-ring on it? (1978 and later)
Last edited by NumberDummy; Dec 16, 2007 at 07:12 AM.
Senior User
Joined: Nov 2007
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From: Guelph
You can get an idea if pump is putting out any pressure by idling truck and using plyers and pinch closed apart of the pressure hose. You should hear pump start to work. Should make the same noise as if you had turned the wheel all the way to one side.Be carefull not to damage hose. A pressure gauge is always the best but you need one that reads around a 1000psi.
Hotshot
Joined: Oct 2004
Posts: 15,882
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From: Durham NC
PS requires the most pressure when trying to turn the wheels while sitting still and at the extreme end of the travel. The earlier PS boxes were linear, so they require more effort standing still. Increasing the pressure on a linear box may make it too sensitive at speed, so be careful in experimenting. Some pumps have a built in regulator on the output, so changing pulley (larger pully on pump will increase pressure if not regulated) may not have any effect. If it is a regulated pump you may be able to remove the regulator by unscrewing the output fitting out of the pump and taking it out. PS pumps from the luxobarges (i.e. Lincoln, Caddy, Imperial) put out higher pressure as well. Be sure you are using a pump that was originally for recirculating ball gearbox. Pumps for racks are lower pressure.
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Fleet Mechanic
Joined: May 2006
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From: S.W. Florida
Thanks for the replies Guys. Bill, the entire motor was yanked from a mid 70's LTD class sedan, I'm told. All bolt ons came along, I'm sure. It's the large, round, steel bodied one. No tube or o-rings but a flared fitting on hose end. Do we know the operating press. of a Chrysler steering box?
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 784
From: Simi Valley, CA
Originally Posted by raerjim
Thanks for the replies Guys. Bill, the entire motor was yanked from a mid 70's LTD class sedan, I'm told. All bolt ons came along, I'm sure. It's the large, round, steel bodied one. No tube or o-rings but a flared fitting on hose end. Do we know the operating press. of a Chrysler steering box?
Further ID.
Look closely at the swagged metal ends of the power steering hoses just in front of the tube. If original Ford, there will be a number stamped there like: D6AW-3F523-AA.
Upgrade to a Heavy Duty P/S Pump: 1976/77 F250 4WD.
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Roast em' if you got 'em
Joined: Mar 2005
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From: Rio Rancho, NM
Typically power steering pumps do have a regulator. Its typically where the pressure hose connects to the pump. In fact, if you ever have to replace the resevoir on the power steering pump you have to remove the regulator. The regulator itself is basically a check ball, a spring, and some shims. The shims are in place to "adjust" the pressure. Its been years since I worked on a power steering pump so I don't recall offhand if you need to add shims or take them away to increase pressure. Here's alink to an aftermarket company that offers a shim kit;
http://www.marchperf.com/pg52.html
You might try searching around and seeing if you can find a service manual for a mid 70's Ford and see if the power steering section will give you any details
Good luck
Bobby
http://www.marchperf.com/pg52.html
You might try searching around and seeing if you can find a service manual for a mid 70's Ford and see if the power steering section will give you any details
Good luck
Bobby
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