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Tractor Talk Discussion Forum

Power steering making noise

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abane

02-06-2004 08:45:57




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I have a 400 Farmall with power steering unit and it makes a bad noise when you turn it in cold weather.It also has a slight leak. What are some opinions on what to do.




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Patrol

02-08-2004 01:10:46




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 Re: Power steering making noise in reply to abane, 02-06-2004 08:45:57  
Warm up the unit.
Try to eliminate all leakages.
Check fluid reservoir for any trace of foaming up. If so, check suction circuit, retight clamps, check tubes, lines, pipes. Check pump front and rear cover, the front seal of shaft, pipe connections with engine stopped for any leakages.
Check the suction circiut from reservoir up to the pump.
Cold and dense fluid may sighltly open the pressure regulator and the bypassing oil around the valve generates noise.
After warming up place a suitalbe pressure gauge with "T" connector into the pressure line to the steering steering cylinder and check max. operating pressure steering the wheel to its limit to left and rights. Keep steering wheel in its full end position while you may check the max. pressure.
In case noise still exists:
Check pressure regulator valve spool for scores, crackes and traces of jamming. Check spool housing, spring, eventulally sims under the spring.
Adjust as necessary.
If operating pressure can not be obtained, disassemble the pump, check and overhaul.

KEEP YOUR WORKING AREA AS CLEAN AS POSSIBLE!

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Ben in KY

02-06-2004 09:11:45




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 Re: Power steering making noise in reply to abane, 02-06-2004 08:45:57  
The first thing I would do is change the fluid/oil in it and clean suction screen, etc. There could be water freezing in it or the screen/filter could be gummed over and not allowing the oil to flow properly when cold.



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abane

02-06-2004 10:07:36




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 Re: Re: Power steering making noise in reply to Ben in KY, 02-06-2004 09:11:45  
I drained all the fluid out last fall and cleaned the filter and put new hydraulic fluid in.It made the noise before and it still makes the same noise.



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Ben in KY

02-06-2004 12:16:15




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 Re: Re: Re: Power steering making noise in reply to abane, 02-06-2004 10:07:36  
Oh, That does not sound too good then. Maybe someone with more experience on that model will have better ideas.

Good luck.
Ben



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r4etired

02-07-2004 04:51:08




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 Re: Re: Re: Re: Power steering making noise in reply to Ben in KY, 02-06-2004 12:16:15  
Is this power steering a Behlen or a Charlynn unit



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Douglas Britt

12-01-2005 16:50:35




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 Re: Re: Re: Re: Re: Power steering making noise in reply to r4etired, 02-07-2004 04:51:08  
I have a Behlen PS unit for my 1949 "M". I am looking for a manual or information for hydraulic hook-up. It has an M & W live hydraulic pump on it. I have it installed on my tractor and can not get it to work. I am at a loss for which hose is inlet and which hose is outlet. Any information would be of great help.
Thank You



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