need some help with power steering
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Junior User
Joined: Nov 2005
Posts: 61
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need some help with power steering
hey guys, got a problem that hopefully some one can help me with. i just changed the steering box and steering pump last week. now it seems like the steering is stiff and my arms are sore from driving. the truck has to roll in order to turn, i cant turn the wheel standing still. its driving me nuts. i changed the pump because of the whinning. it has 35/15 tires on it, but it should still be able to turn easy, shouldnt it ?
Elder User
Joined: Sep 2009
Posts: 628
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From: Parker, Colorado
You are to use ATF. Drain it. Flush it again, and refill. Jack up the front of the truck, put it on jackstands and turn you wheels lock to lock for a couple of minutes to help bleed the air out of it. Hope no damages to the seals is done. Good luck. Use Merc V.
Laughing Gas
Joined: Jan 2007
Posts: 870
Likes: 9
From: Carbondale, CO
See this thread.
https://www.ford-trucks.com/forums/9...atf-flush.html
And this link.
Ford Super Duty Power Steering Flush | Superdutypsd.com
https://www.ford-trucks.com/forums/9...atf-flush.html
And this link.
Ford Super Duty Power Steering Flush | Superdutypsd.com
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Post Fiend
Joined: Feb 2008
Posts: 10,977
Likes: 5
From: Lancaster, Pa.
Agree with the guys, get that powersteering fluid out of there. Beings you spend all that money, top it off by using Mobil 1 synthetic tranny fluid, its expensive about 9 dollars a quart but well worth it IMO, thats what I flushed my old with, get two or three quarts to be safe.
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of American machinists
Joined: Oct 2004
Posts: 1,014
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From: NORTH IDAHO
The guys have you on the right track, However with larger than stock tires you will have a tough time turning the wheel while the truck is stationary. The contact patch of a wide tire is significantly larger than the stock tires.
Same deal on my truck even with a Red head steering box.
Same deal on my truck even with a Red head steering box.
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Junior User
Joined: Nov 2005
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ok flushed the system and same deal. will not turn at a stop. so i removed power steering pump and got a new one. after bleeding for like 30 minutes i gave it another shot. dropped it off the stands and took it for a spin. same deal but a little easier at a stop. hey waltdog, i know what your saying but the origanel one that i took out because of the whinning turned with one finger even with the 39 1/2 super swampers that i had on it when i got it. so on pump #2 could there be an airlock in it or what. im getting frustrated with it.
Senior User
Joined: Jun 2007
Posts: 459
Likes: 1
From: Rogers, MN
My guess is the steering box is a little stiff and needs to get worn in. I just replace the steering box on my 68 Buick GS. I was able to turn the wheel with my little finger, now I have to really try to turn it. One thing to try is to rev the engine a little while trying to turn the tires to see if that helps. On my buddy's old dodge cummins you can't turn the wheel unless you give it a little throttle.
Hotshot
Joined: Jan 2002
Posts: 17,988
Likes: 207
From: La La Land
Maybe your new pump has its pressure relief valve set at a lower pressure than your original, allowing lower hydraulic pressure, thus less "work" done. Would it surprise you that rebuilders would do that to keep their pumps running for the warranty period?
Without elaborate test hoses and gauges, you'll never know.
Watch it when "burping" it (turning it lock-to-lock repetitively), as you can cause the steering dampener to leak internal fluid past it's seals if you go too fast.
Pop
Without elaborate test hoses and gauges, you'll never know.
Watch it when "burping" it (turning it lock-to-lock repetitively), as you can cause the steering dampener to leak internal fluid past it's seals if you go too fast.
Pop
Senior User
Joined: Feb 2010
Posts: 383
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From: white pine,tn
Agree with the guys, get that powersteering fluid out of there. Beings you spend all that money, top it off by using Mobil 1 synthetic tranny fluid, its expensive about 9 dollars a quart but well worth it IMO, thats what I flushed my old with, get two or three quarts to be safe.
of American machinists
Joined: Oct 2004
Posts: 1,014
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From: NORTH IDAHO
Mobile one synthetic ATF is the one to get. There's only one.
Copied below from Mobile one's site.
* Also suitable for use in vehicles that specify the following fluid requirements:
o Audi G 052 025-A2, G 052 162-A1
o BMW LA2634
o Esso LT 71141
o ETL-7045E, ETL-8072B, N402
o Ford* MERCON*, MERCON V, MERCON LV
o All 2005 and earlier GM vehicles**
o Honda ATF-Z1*
o Hyundai SP-II, SP-III
o Idemitsu K17
o JWS 3309
o Kia SP-II, SP-III
o MAN 339F, V1, V2, Z1, Z2, Z3
o Mazda ATF-III, ATF-MV
o Mercedes-Benz 236.1, 236.2, 236.5, 236.6, 236.7, 236.9
o Mitsubishi Diamond SP-II, SP-III
o Nissan Matic-D, Matic-J, Matic-K
o Subaru ATF
o Toyota T-III, T-IV
o Voith 55.6335.XX (G607, G1363)
o Volvo 97340
o ZF TE-ML 03D, 04D, 09, 14A, 14B, 16L, 17C
* Not recommend for CVT applications, Mercon® SP, Ford Type F
** Mobil DEXRON-VI ATF is recommended for 2006 and newer GM vehicles and improved performance in 2005 and earlier vehicles, wherever DEXRON is specified
Copied below from Mobile one's site.
* Also suitable for use in vehicles that specify the following fluid requirements:
o Audi G 052 025-A2, G 052 162-A1
o BMW LA2634
o Esso LT 71141
o ETL-7045E, ETL-8072B, N402
o Ford* MERCON*, MERCON V, MERCON LV
o All 2005 and earlier GM vehicles**
o Honda ATF-Z1*
o Hyundai SP-II, SP-III
o Idemitsu K17
o JWS 3309
o Kia SP-II, SP-III
o MAN 339F, V1, V2, Z1, Z2, Z3
o Mazda ATF-III, ATF-MV
o Mercedes-Benz 236.1, 236.2, 236.5, 236.6, 236.7, 236.9
o Mitsubishi Diamond SP-II, SP-III
o Nissan Matic-D, Matic-J, Matic-K
o Subaru ATF
o Toyota T-III, T-IV
o Voith 55.6335.XX (G607, G1363)
o Volvo 97340
o ZF TE-ML 03D, 04D, 09, 14A, 14B, 16L, 17C
* Not recommend for CVT applications, Mercon® SP, Ford Type F
** Mobil DEXRON-VI ATF is recommended for 2006 and newer GM vehicles and improved performance in 2005 and earlier vehicles, wherever DEXRON is specified
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