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Farmall & IHC Tractors Discussion Forum
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Char-lynn power steering

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super99

04-29-2006 16:22:10




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I have a I-H 400 with wide front and 70 jd, both have Char-lynn power steering. Without the loader on the 400, you can turn the wheels setting still but when the loader is on, you can only turn wheels when moving. On the 70, you can only turn wheels when moving. Both can be turned with 1 finger when moving. I know they are both old and weak, but is it usually pump or orbit motor that causes this. Orbit motor on 400 is always wet with oil, 70 is dry but seal leaks a little around the steering wheel side of motor. Both pumps squeal when you try to turn wheel setting still. Is this normal for these older units? Have read posts about hooking into tractor hydraulics on 400 to power the steering, would it help any? Thanks in advnce, Chris

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Bob M

04-29-2006 19:46:42




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 Re: Char-lynn power steering in reply to super99, 04-29-2006 16:22:10  
Chris - Sounds like either you have weak pumps or the steering pump relief valves are set too low (that may be the "squealing" you're hearing...).

FWIW my SM has Charlynn power steering supplied by a priority valve off the live pump. It steers easier than my wife's car regardess of engine RPM, ground speed or load on the front wheels.

Regarding wetness around the steering motor check the two motor hose manifold cap screws for tightness. They tend to work loose over time which results in seepage that appears to be coming out of the motor itself.

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Hayfarmer

04-29-2006 19:40:11




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 Re: Char-lynn power steering in reply to super99, 04-29-2006 16:22:10  
There could be several variables. I believe Char Lyn had different ratios at different times so one unit may put more power to the steering. If these run off of the Char Lyn pumps there could be differences in the output of those, if they are running off the tractor hydraulics there would need to be a flow control valve somewhere on each that could influence the power. Also maybe the 70 has worn parts hanging up the steering making it harder to steer.

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