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8N Position Control Castings

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Glenn(NC)

02-20-2000 07:50:22




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I recently replaced the ram piston (thanks Zane for great advice) and the cam follower pin (thanks Nolan for right part number). The improvement is dramatic. Now I can work on my implements without using jack stands, etc. to hold them up. The hydraulic pressure doesn't leak down anymore!

A problem remains, though. The position control cam is cast iron and the cam follower is case hardened steel. Replacing the follower on fixed half the problem. The cam is as worn or worse than the pin. Ford/New Holland can't help me with a new cam (or any of the other cast parts in there).

Question: Could a good welder build up some metal on the cam so I could machine a new cam face? Any other ideas on how to get good position control back?

Many thanks.

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ZANE

02-20-2000 19:16:40




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 Re: 8N Position Control Castings in reply to Glenn(NC), 02-20-2000 07:50:22  
If the draft control will lift the lift arms on your 8N my ZANE THANG will work just as good on the 8N to give you position control as it does on the 9N and 2N. No need to try to repair the cam to have position control.
I have welded up the cam on the position control for the 8N but it is a major undertaking if the rocker and cam are removed from the tractor and it is hard to get to the cam to grind the weld down enough for proper operation with it on the tractor. Can be done but the linkage for the draft control must all be removed to allow enough clearance to get to the cam.

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Jon P in NC

02-21-2000 05:13:54




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 Re: Re: 8N Position Control Castings in reply to ZANE, 02-20-2000 19:16:40  
And remember. To get the cam off the shaft the lift arms must come off too. This can be a formitable task. Water gets into the splines and rusts the thing tight. My lift cover is at the machine shop right now. I will find out today if he got them off using a rosebud torch. The arms can not be taken off with a press because there is not much there to grab on to.

Good luck to you.

Jon E. Purut

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EricG.NH

02-22-2000 04:24:01




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 Re: Re: Re: 8N Position Control Castings in reply to Jon P in NC, 02-21-2000 05:13:54  
Jon,
My local NH dealer engineered his 30ton hydraulic press to help me with my lift arms. A little penetrating lube helped as well. The first popped off close to the 30 ton max! A cold press is better than over-heating, IMHO. After a week of heating, pullers, etc. I gave in. Best $40 I ever spent! Well, maybe a close second. :o)
Eric



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