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Lift arms not working


 
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TKW
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PostPosted: Mon Sep 24, 2018 2:00 pm    Post subject: Lift arms not working Reply to specific post Reply with quote

The arms on my 8N (2N rear end) dropped the other day and won't raise at all. Can lift them up and down by hand with no resistance at all. Doesn't matter if lift control is all the way up or down, PTO engaged or disengaged, PTO is working. Any ideas on where to start? Hydraulics have been knocking a little sometimes when raised and under a load.
 
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Bruce (VA)
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PostPosted: Mon Sep 24, 2018 2:07 pm    Post subject: Re: Lift arms not working Reply to specific post Reply with quote

See tip # 16.

Insure that the control arm moves when you operate the touch control lever. Reach in w/ the tractor off and insure that the control arm is attached to the pump. If that does not solve the problem, put a heavy implement on it, turn the tractor on and try and lift the implement.

Post back w/ what you observe.
75 Tips

 
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Dollar Bill
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PostPosted: Tue Sep 25, 2018 12:26 am    Post subject: Re: Lift arms not working Reply to specific post Reply with quote

TKW, welcome to the forum - Glad to have you!!

Bruce gave you solid advice and I have one other question for you. Does the lift work in Draft Mode?
 
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souNdguy
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PostPosted: Tue Sep 25, 2018 8:49 am    Post subject: Re: Lift arms not working Reply to specific post Reply with quote

Does your 2n rear end have a 2n pump and top cover or an 8n pump n top cover? Diagnostics will be slightly different for each.. For instance if a 2n pun n cover, pull inspection cover and look at the control fork and t valve.
 
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TKW
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PostPosted: Tue Sep 25, 2018 8:54 am    Post subject: Re: Lift arms not working Reply to specific post Reply with quote

Ok, might be the weekend before I get a chance to check it out again, work, weather and son borrowed tools. By reaching in, do you mean taking the cover off where the dipstick is to do that? It wouldn't lift my blade but I could try the disc or bushog if that helps.

Not sure what you mean by draft mode? Had this thing a long time but I only use it a 3 or 4 times a year for light bushoggin, dragging firewood logs, scraping gravel drive, etc. Lift arms have always been a pain leaking off while using it.

Thanks
 
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TKW
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PostPosted: Tue Sep 25, 2018 8:56 am    Post subject: Re: Lift arms not working Reply to specific post Reply with quote

Not sure, is there a quick way to tell the difference?
 
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Caryc
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PostPosted: Tue Sep 25, 2018 9:16 am    Post subject: Re: Lift arms not working Reply to specific post Reply with quote

TKW wrote:
(quoted from post at 09:56:56 09/25/1Cool Not sure, is there a quick way to tell the difference?


Do you have a small lever about four inches long located right under the seat on the right side on the top cover? This lever switches between Position Control and Draft Mode.
 
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Caryc
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PostPosted: Tue Sep 25, 2018 9:37 am    Post subject: Re: Lift arms not working Reply to specific post Reply with quote

TKW wrote:
(quoted from post at 09:56:56 09/25/1Cool Not sure, is there a quick way to tell the difference?


This picture shows the position/draft control lever.


 
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Jim L WA
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PostPosted: Tue Sep 25, 2018 9:43 am    Post subject: Re: Lift arms not working Reply to specific post Reply with quote

When you pull the inspection cover, the one with the dip stick, follow the control rod with you eyes or hand down to the pump. If there is a T with one control valve that is a 2N pump. If there are two control valves down there that would be an 8N pump. If the control rod is working the valve or valves in and out then you can start the tractor and watch what's going on in there when you move the control lever up or down. Look for leaks etc. The knocking sound under load in normal for the Scotch Yoke pump.
 
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Caryc
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PostPosted: Tue Sep 25, 2018 1:22 pm    Post subject: Re: Lift arms not working Reply to specific post Reply with quote

CVPost-Jim L WA wrote:
(quoted from post at 10:43:50 09/25/1Cool When you pull the inspection cover, the one with the dip stick, follow the control rod with you eyes or hand down to the pump. If there is a T with one control valve that is a 2N pump. If there are two control valves down there that would be an 8N pump. If the control rod is working the valve or valves in and out then you can start the tractor and watch what's going on in there when you move the control lever up or down. Look for leaks etc. The knocking sound under load in normal for the Scotch Yoke pump.


To simplify it a bit more, if there is a single control rod, it's the 8N pump.
 
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TKW
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PostPosted: Wed Sep 26, 2018 9:08 am    Post subject: Re: Lift arms not working Reply to specific post Reply with quote

No, don't have that lever on mine.
 
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Dollar Bill
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PostPosted: Wed Sep 26, 2018 10:29 pm    Post subject: Re: Lift arms not working Reply to specific post Reply with quote

CVPost-TKW wrote:
No, don't have that lever on mine.


OK, that means your lift is of the 9/2N variety and only has Draft mode. Position Control became available with the 8N by using the small lever shown in CaryC's pixs.

You will have parallel control arms/rods (504) that attach onto the "T" shaped control valve (640) in the diagram. Previous advice was to verify the control rods are firmly attached as this connects your touch control lever to the hydraulic pump.


 
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Caryc
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PostPosted: Thu Sep 27, 2018 9:08 am    Post subject: Re: Lift arms not working Reply to specific post Reply with quote

Dollar Bill wrote:
(quoted from post at 23:29:58 09/26/1Cool
CVPost-TKW wrote:
No, don't have that lever on mine.


OK, that means your lift is of the 9/2N variety and only has Draft mode. Position Control became available with the 8N by using the small lever shown in CaryC's pixs.

You will have parallel control arms/rods (504) that attach onto the "T" shaped control valve (640) in the diagram. Previous advice was to verify the control rods are firmly attached as this connects your touch control lever to the hydraulic pump.



Not necessarily. My 8N has no Position / Draft lever on it either. Would you like to guess what is inside that rear end?

For your information it's the single control rode as in the 8N's. The only way you can be sure of what's in there is to remove the dip stick inspection cover and look inside.
 
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Caryc
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PostPosted: Thu Sep 27, 2018 9:10 am    Post subject: Re: Lift arms not working Reply to specific post Reply with quote

TKW wrote:
(quoted from post at 15:00:17 09/24/1Cool The arms on my 8N (2N rear end) dropped the other day and won't raise at all. Can lift them up and down by hand with no resistance at all. Doesn't matter if lift control is all the way up or down, PTO engaged or disengaged, PTO is working. Any ideas on where to start? Hydraulics have been knocking a little sometimes when raised and under a load.


When your lift arms were working, did you have position control? That is, when you raised an implement with your touch control lever, were you able to stop the implement at any height you wanted and it would remain there?
 
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