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Farrell(Utah) 
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Joined: 11 Sep 2009
Location: Springville, Ut
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 Topic: Power steering dilemma
Posted: 13 Feb 2012 at 7:19pm |
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My WD45 gas loader tractor has a Charlynn power steering unit on it that I have adapted to use with a Ford pickup power steering pump. It works fine except that the power steering motor leaks bad as it needs new seals. As luck would have it, I have a complete factory power steering unit off a WD45 diesel. I am considering two options: first, putting the factory power steering motor from the diesel unit on the tractor and using the Ford power steering pump to run it or second, repairing the Charlynn motor. Does the factory power steering motor have enough advantages to make the first option attractive on the loader tractor? Or, would it made more sense to leave both units as they are and either sell the diesel one as a complete unit or put it on one of my WD45 diesel tractors? Thanks for the opinions.
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A(1937), 2 G, 2 WD45 diesels, 6 WD45 gas, UC, 2 WD, D17 gas, WF, Farmall 400, D12, Kubota B3030
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Farrell(Utah)
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Joined: 11 Sep 2009
Location: Springville, Ut
Points: 552
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Posted: 13 Feb 2012 at 7:22pm |
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Woops, I forgot to add that the pump from the diesel unit could be used on a D17 diesel that I have. Thanks.
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A(1937), 2 G, 2 WD45 diesels, 6 WD45 gas, UC, 2 WD, D17 gas, WF, Farmall 400, D12, Kubota B3030
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CTuckerNWIL
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Joined: 11 Sep 2009
Location: NW Illinois
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Posted: 13 Feb 2012 at 7:32pm |
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I would be inclined to fix the Charr-Lynn motor. I have a 45 with PS and although it's 58 years old I was never impressed with the "factory" PS. I'm not knocking it cause I know it could use a rebuild but I would think the charrlynn would be cheaper to fix and leave the Factory set up complete.
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sparky
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Joined: 13 May 2011
Location: So. Indiana
Points: 1728
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Posted: 13 Feb 2012 at 7:53pm |
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Where would you get a Char-Lynn motor rebuilt?
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It's the color tractor my grandpa had!
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CTuckerNWIL
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Location: NW Illinois
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Posted: 13 Feb 2012 at 8:20pm |
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Buy a rebuild kit and do it in the garage.
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j.w.freck
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Joined: 16 Sep 2009
Location: karnack texas
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Posted: 13 Feb 2012 at 9:18pm |
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if you use the one off a 45-d,it was splined to the back of the generator...
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MACK
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Joined: 17 Nov 2009
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Posted: 13 Feb 2012 at 9:22pm |
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It has a common oring in each end. Just mark it to get back togather right. Take each end cap off leaving the shaft in place and replace the orings one end at a time. MACK
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allismanamp
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Location: MN
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Posted: 13 Feb 2012 at 9:45pm |
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the wd i had the pump replaced in i got a rebuilt one for 200 bucks after core trade in from parts guy i go through here in MN worked great but i know if you don't get the plates lined up perfect or "timed" the motor wont work also if they get to wore out they get oval ed out and even a rebuilt kit wont work
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D-17_Dave
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Joined: 11 Sep 2009
Location: Mocksville NC
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Posted: 14 Feb 2012 at 7:01pm |
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Be very carefull using any aftermarket pump on the old steering units as late model automotive stuff may be too much flow or pressure for the oem setup to handle. It may work great, for awhile.....
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Yea, I can fix that.....
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Farrell(Utah)
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Location: Springville, Ut
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Posted: 14 Feb 2012 at 7:19pm |
Dave, I don't remember the year but I as I recall the Ford pickup was in the 1970s. That is probably not enough information to know if the flows or pressures will be too high. Thanks.
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A(1937), 2 G, 2 WD45 diesels, 6 WD45 gas, UC, 2 WD, D17 gas, WF, Farmall 400, D12, Kubota B3030
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D-17_Dave
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Posted: 14 Feb 2012 at 8:07pm |
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Only with a flow meter and pressure gauge in each system to see what the flows and relief pressures are will you be able to determine if this can damage anything.
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Yea, I can fix that.....
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sparky
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Location: So. Indiana
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Posted: 14 Feb 2012 at 8:57pm |
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Where do you get a rebuild kit for a Charlynn torque generator motor?
Edited by sparky - 14 Feb 2012 at 8:59pm
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It's the color tractor my grandpa had!
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skipwelte
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Location: Anthon, Iowa
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Posted: 14 Feb 2012 at 11:09pm |
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Id reseal the Charlynn unit Farrell, like Mack says, mark the end caps and do one end ata time. If I remember right some of them have a quad seal. Force America at Ft Dodge Ia has the seals, I dont have the phone # handy. If you cannt find it PM me and ill do a search.
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DaveKamp
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Location: LeClaire, Ia
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Posted: 14 Feb 2012 at 11:24pm |
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Automotive power steering pumps are usually vane-type variable displacement units, in which case the vanes retract when 1) max pressure is reached or 2) when shaft speed falls below a certain point.
Excess flow or pressure really can't occur in a vane-type pump, and the advantages are that it doesn't require an external pressure relief valve, and doesn't impose much cranking load on the engine at startup, but the disadvantages are that they can 'stick' in a retracted state, and cavitation will annihilate the vanes and wear-plates in a hurry.
If the pump is a fixed-displacement (like a gear or georotor), the system MUST have a pressure relief valve, and the steering valve MUST be an open-center type valve, so that return flow has someplace to go, lest you stall the pump against the pressure relief valve anytime the steering wheel isn't turning. Fixed volume pumps were NOT commonly used on domestic automotive power steering systems, but they're frequently used on power equipment.
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