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8N Hydraulic Control Question

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Jim Armstrong

03-08-2001 13:28:55




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I asked this question a couple of months ago in a general way. Now I have the top of my hydraulic unit off and, before I go further, need to know:
Is the pin (1/2" long by about a 1/4" around) that is threaded into the position control arm and limits its travel by hitting a boss on the case supposed to be round or have a flat side?
Mine has a flat side, but I am not sure if it is from wear. I think the difference changes the position of the lever and affects the operation of the unit in Constant Draft position. If it is supposed to be round, I have the option of a new pin or turning the old one to a new surface. Any answers or ideas?

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fessman

03-09-2001 04:50:09




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 Re: 8N Hydraulic Control Question in reply to Jim Armstrong, 03-08-2001 13:28:55  
Jim,

Mine had a flat spot also. I pressed it out and since I did not have time I rotated it 180 degrees and pressed it back in. If you were thinking of turning it on a lathe, that will not work.

Fessman



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ZANE

03-08-2001 17:22:15




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 Re: 8N Hydraulic Control Question in reply to Jim Armstrong, 03-08-2001 13:28:55  
Jim it is supposed to be round and turning it will not help. It has to be the diameter it was to begin with.

I have a booklet and jig to use for adjusting the lift and a new pin comes with it because they are usually worn the way you describe yours.

See the link below for more details

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Jim Armstrong

03-08-2001 14:02:32




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 Re: 8N Hydraulic Control Question in reply to Jim Armstrong, 03-08-2001 13:28:55  
Update before I look too dumb: The pin rides on the cam that is attached to the lift arms, giving position feedback, I guess. So it is obviously worn, not intentionally flat. Turn it or replace it?



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Mountainman

03-08-2001 15:05:02




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 Re: Re: 8N Hydraulic Control Question in reply to Jim Armstrong, 03-08-2001 14:02:32  
You might want to check with Zane. I believe that may be the pin that comes with a jig he sells that allows you to properly adjust your hydraulics.



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Steve IA

03-08-2001 14:19:26




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 Re: Re: 8N Hydraulic Control Question in reply to Jim Armstrong, 03-08-2001 14:02:32  
Might as well replace it and you won't have to worry about it for another 50 years . Check the archives for Cam Follower Pin for specifics. HTH Steve 8N 169302



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