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Power Steering Project Advice Needed


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#1 OkieGt OFFLINE  

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Posted August 08, 2013 - 09:42 PM

I have a Ariens GT20 I am repairing for a friend, he over tightened one of the four hydraulic lines going into the steering unit and ruined the threads on the nipple (part of the box) I found one EXACTLY like it from a John Deere 318, except the Deere has five nipples on the bottom, other than that it is the same length, width, even the same steering wheel spline. I believe the extra ou let is to charge the spool that controls the front hydraulic outlets. I would like to buy the Deere column and cap off the one extra nipple. Does anyone have any advice or suggestions as to if this will work or not. THANKS, Mike


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#2 Username OFFLINE  

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Posted August 08, 2013 - 10:15 PM

I am sure the early Deere's had 4 ports.


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#3 OkieGt OFFLINE  

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Posted August 08, 2013 - 10:58 PM

I am sure the early Deere's had 4 ports.

Early Deeres as in???? what model(s). The first models I knew of that had power steering were the 400s and 420, later the 318, but all used hydro ports up front and had five nipples coming out of the steering unit box.  I dont know of any power steering equipped Deere that didn't have a line to supply front hydraulics. It really doesn't matter, the only model of columns for sale on ebay are the ones with five that fit the 318, 330, 420, and 425. Thanks



#4 skyrydr2 ONLINE  

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Posted August 09, 2013 - 03:06 AM

Just tee in to the return line with that extra port . You can't plug it though , It is the "power beyond" port and must have flow through it .


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#5 Alc ONLINE  

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Posted August 09, 2013 - 06:22 AM

That stinks that they didn't use threaded fittings into the control valve . Are they welded in ?
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#6 OkieGt OFFLINE  

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Posted August 09, 2013 - 07:01 AM

That stinks that they didn't use threaded fittings into the control valve . Are they welded in ?

yep sort of, hard to tell, I haven't got it out yet


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#7 OkieGt OFFLINE  

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Posted August 09, 2013 - 07:17 AM

Just tee in to the return line with that extra port . You can't plug it though , It is the "power beyond" port and must have flow through it .

I'm looking for a diagram for the routing of lines on the bottom of that JD box, Thanks



#8 skyrydr2 ONLINE  

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Posted August 09, 2013 - 07:38 AM

All those fittings should be servicable except I think 2 are special and part of the assembly screws, basically a hollow bolt kind of arrangement. But not entirely possitive on this?



#9 Username OFFLINE  

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Posted August 09, 2013 - 07:54 AM

Early Deeres as in???? what model(s). The first models I knew of that had power steering were the 400s and 420, later the 318, but all used hydro ports up front and had five nipples coming out of the steering unit box.  I dont know of any power steering equipped Deere that didn't have a line to supply front hydraulics. It really doesn't matter, the only model of columns for sale on ebay are the ones with five that fit the 318, 330, 420, and 425. Thanks

The early 318's and 420's.

 

http://www.ebay.com/...=p2047675.l2557


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#10 JDBrian OFFLINE  

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Posted August 09, 2013 - 10:00 AM

Does that extra line go to the oil cooler. Any flow not routed to the steering cylinder flow is often sent through the cooler on it's way back to the sump.


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#11 OkieGt OFFLINE  

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Posted August 09, 2013 - 11:03 AM

The early 318's and 420's.

 

http://www.ebay.com/...=p2047675.l2557

Thanks, a BUNCH!!!, the listing ended, I'll have to buy a 5 port and reroute a hose to a tee going back to the hydro 



#12 OkieGt OFFLINE  

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Posted August 09, 2013 - 11:08 AM

Does that extra line go to the oil cooler. Any flow not routed to the steering cylinder flow is often sent through the cooler on it's way back to the sump.

The JDs have an extra line for "power beyond", which supplies fluid to another spool that operates the front hydraulocs by pushing/pulling the levers on the side. there are two goses tha go to the front ports and two return lines that come vack to the spool, then a outlet back to the hydro. It's alot like electrical recepts and run in unison, each spool must have a return line. That's the way I see it. No cooler on the Areins all fluid goes back to the hydro then pumped into the transaxle reservoir, I think


Edited by OkieGt, August 09, 2013 - 11:10 AM.


#13 JDBrian OFFLINE  

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Posted August 10, 2013 - 05:40 AM

 I know that on my 2320 the return flow from the PS valve goes to the cooler than back to the reservoir. I had a look at my 318 manual and it has the diagrams and theory for each type of valve. I've attached the info. which should help.

 

318 power steering 4 port valve.png

 

4 port valve

 

 

318 power steering 5 port valve.png

 

5 port valve

 

318 5 port PS valve diagram.png

 

5 port valve diagram

 

 

 

 

 

 

 


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#14 OkieGt OFFLINE  

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Posted August 11, 2013 - 08:00 PM

Thanks, I apprecate it. I'm going to hook my ariens hoses up to the same places on the ports to the JD, the extra port will get a line that follows the return line to the hydro and tees back into that hose.


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#15 JDBrian OFFLINE  

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Posted August 12, 2013 - 06:44 AM

This is a nice retrofit and one that many people would consider. Thanks for documenting this!


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