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861 PS question

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William Fissell

01-02-2018 12:43:58

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rebuilt PS on my 861; new steering column from here, bearings, seals etc. New pump new cylinders. Works well but I get an upwelling of PS fluid out under the steering wheel if its cold or if I run it all the way lock to lock. I am thinking PS pressure is just a little too high and its blowing past the top seal.

Any thoughts?



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01-03-2018 17:57:57

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 Re: 861 PS question in reply to William Fissell, 01-02-2018 12:43:58  
Thats about how much they are supposed to move. When you turn the wheel one way the shaft and control valve spool moves up, turn the other way the shaft and spool moves down. Thats what redirects pressure for left or right turns.

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Sean in PA

01-03-2018 05:00:03

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 Re: 861 PS question in reply to William Fissell, 01-02-2018 12:43:58  
Quoting Removed, click Modern View to see

There are specific instructions in the service manual for tightening that nut. I don't have the book handy, but from memory I believe that You are supposed to tighten it until snug/tight and then back off a certain fraction (1/6 or 1/4???) of a turn and then stake the nut in place.

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William Fissell

01-03-2018 09:33:11

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 Re: 861 PS question in reply to Sean in PA, 01-03-2018 05:00:03  
yep and thats what I did; seems to me steering shaft ha a lot of vertical movement- maybe 1/4 or 5/16 as I turn it.

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01-02-2018 14:18:51

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 Re: 861 PS question in reply to William Fissell, 01-02-2018 12:43:58  
It shouldnt leak there at all, did you feel the seal slip past the outside edge? I always give a little back and forth motion while pushing the tube on. Was it good before it started leaking the first time? If it was good before, the pump shouldnt be the problem.

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William Fissell

01-02-2018 14:28:51

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 Re: 861 PS question in reply to riveroadrat, 01-02-2018 14:18:51  
It was never 'good" as it was trashed when I got it with a seized pump are rusted through cylinders, pitted steering column. New springs and seals and bearings in the control valve, new pump, new tubing, new cylinders. Generally it leake when steering and not when the sterring wheel is not being turned.

Yes I felt the edge slide over easy. My only worry is I left too much travel up and down by not tightenign the nut enough.

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Ultradog MN

01-02-2018 14:51:58

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 Re: 861 PS question in reply to William Fissell, 01-02-2018 14:28:51  
What did the surface of the seal area on the shaft look like?
Did you put a speedi sleeve on it?
My first guess is that it might need a sleeve there.

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William Fissell

01-03-2018 09:26:07

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 Re: 861 PS question in reply to Ultradog MN, 01-02-2018 14:51:58  
Brand new shaft from this site, looked good.

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