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Discussion Forum

Allis chalmers I40

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Ed A.

02-26-2003 09:50:47

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does anyone have an idea of how the power steering hoses are routed. When the cases were split, the hoses got mixed up. The process of elimination has been a pain. I found a service manual online for $30, but all I need is the hose layout.

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02-26-2003 13:14:26

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 Re: Allis chalmers I40 in reply to Ed A., 02-26-2003 09:50:47  
Ed A,
I have a D17 Series IV, so it may be similar. At any rate, the hoses shouldn't be too difficult to figure out. The pump should have what is called a "case drain" and it would be a small hose&tube that returns any internally-leaked oil to the sump or reservoir (casting) Typically, the case drain is at the front portion of the pump near the pulley. On the D17, the opposite end merely slips into a fitting at the casting and is sealed with an o-ring. The intake or supply would be the largest hose/tube of all of them and may have a screw-type clamp or two on it. (Obviously not for pressure) The pressure line should be a crimped hose/tube assembly for high pressure with SAE fittings on either end. There are "fixed" lines from the control valve to the steering cylinder and they probably have bends that would allow them to fit only one place. If the steering pump does not assist, and makes a lot of noise, these fixed lines may be crossed. Hope this helps. Gatz

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02-26-2003 13:16:24

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 Re: Re: Allis chalmers I40 in reply to gatz, 02-26-2003 13:14:26  
Thanks, I'll try it

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