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Allis Chalmers Discussion Forum
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WD45 auxillary line

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Jim Tanner

09-19-2003 08:57:54




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I have a 55 WD45 that has the auxillary hydraulic line to the rear and it has more to it than the one on my older WD's. The manuals have no info on the turn dial on it and the smaller hose connection to the left side. Can someone explain what these additions are for?? Thanks for your help!!




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JMS/MN

09-19-2003 22:16:12




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 Re: WD45 auxillary line in reply to Jim Tanner, 09-19-2003 08:57:54  
I think they both are right- the transport valve is in the system to let the semi-mounted, or pull-type machine work without the lift arms getting involved. Sort of lets the system work quicker without the mounted system being used.



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JMS/MN

09-19-2003 22:15:04




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 Re: WD45 auxillary line in reply to Jim Tanner, 09-19-2003 08:57:54  
I think they both are right- the transport valve is in the system to let the semi-mounted, or pull-type machine work without the lift arms getting involved.



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DanD.

09-19-2003 15:37:52




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 Re: WD45 auxillary line in reply to Jim Tanner, 09-19-2003 08:57:54  
Eldon's reply is correct. You have the transport valve and like he said you need it for traction booster operation when using a snap coupler implement that has its own wheels and hydraulic ram. WHen the traction booster is working, it is significantly less pressure than when you lift the implement. THe transport valve doesn't allow oil past at the lower pressure and so it all goes to the rams on the lift arms. At the higher pressure, i9t allows oil to flow to the remote ram. If you have the dial turned all the way to the left (I may have this backward..but it's either all the way left or right) then it's just like the valve isn't there. You turn it all the way in the other direction to use it.

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Eldon

09-19-2003 09:35:25




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 Re: WD45 auxillary line in reply to Jim Tanner, 09-19-2003 08:57:54  

I believe that you are talking about the transport valve option. This was necesarry in order for the traction booster system to work properly when pulling a sc disc or plow with a remote lift cylinder.



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