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Ford Tractors Discussion Forum
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641 power steering

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Bernie in MA

12-04-2005 15:32:48




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I bought a 641 Ford and when I got it running last Spring one of the PS cylinders had split from freezing, I guess. I welded it and all was ok until it got cold this week. The pump was frozen stuck and wouldn't turn until I got heat to it. A line is evidently frozen because the PS isn't working. How can I get the water out of the system? Thanks.




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Dean

12-05-2005 01:02:09




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 Re: 641 power steering in reply to Bernie in MA, 12-04-2005 15:32:48  
I recently flushed the PS system on the 64 4 cylinder 4000 that I bought about 6 weeks ago. The PS had a mixture of ATF and water in it that looked like melted strawberry ice cream.

Since I was in no hurry, I removed the pump and washed it out with gasoline. I also jacked up the front end, marked and removed the cylinder hoses, and worked the steering from lock to lock several times until no significant oil was forced out.

Blowing out the lines between the pump and the steering pedestal forced out some more oil. I left the lines open for about a week until I could work on it again before working the steering back and forth a few more times.

Finally, I replaced the pump with a new filter installed, reconnected the hoses, filled the resevoir, and started it up. After running it for a while and topping off the resevoir after all of the air was purged by operating the steering a few more times lock to lock, I sucked as much of the new oil out as possible with a turkey baster and replaced it with new oil.

Appears very clean now.

Dean

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Kelly Jewell (KY)

12-04-2005 16:23:06




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 Re: 641 power steering in reply to Bernie in MA, 12-04-2005 15:32:48  
Bernie, you PS cylinders have a inner tube and outer tube with the piston actuall working in the inner tube, the space between the tubes carries oil to the front of the piston on the return stroke. A weld or dent on the outer tube is usually not a problem. Water, I never heard of. I would first get it warmed up, remove the pump filter then take the lines off the cylinders, don't get em mixed up and try pouring mineral spirits or diesel fuel in the pump reserviour to flush out. Jack the front up and turn the steering wheel lock to lock with the lines off should flush the cylinders. Then I would flush with ATF or CNH 134 oil install new filter and keep my fingers crossed.

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