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Ford 9N, 2N & 8N Discussion Forum
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LIFT CAPACITY?

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BRETT IN MO

12-13-2004 14:23:04




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I had something happen the other day, I was digging post holes with my 9N, the auger caught a root and bound up, I shut down the PTO and dug the auger loose. I went to raise the auger, it wouldnt lift, I had to help it. Is it possible to "overload" the lift?, can any damage be done? After the auger cleared the hole, it seemed to work fine. Any possible reason for the loss of lift power? Thanks for any advice/explanation.

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old

12-13-2004 16:40:14




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 Re: LIFT CAPACITY? in reply to BRETT IN MO, 12-13-2004 14:23:04  
Dumb question for you did you start the pto up before you tried to lift it?? If not there the problem PTO not running on lift and clutch has to be out also



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gahorN

12-13-2004 17:20:33




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 Re: LIFT CAPACITY? in reply to old, 12-13-2004 16:40:14  
I don't know if there's a "specification" for the lift's capacity or not but.... my own 9N seems limited at about 800 lbs depending upon the "arm" of the lifting device. If I use my carry-all and the load is close to the rear wheels it'll lift almost 1,000 lbs, but at the end of a boom-pole it lifts about 800 lbs.



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txblu

12-14-2004 06:23:46




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 Re: LIFT CAPACITY? in reply to gahorN, 12-13-2004 17:20:33  
Lift capacity is rated at the arms. If your boom pole is 10' long (easy number) you have 1/10 the capacity at the end due to the 10 x multiplier of the length...."feet x pounds" = capacity, just like a torque wrench.

With no leaks and I'm told an 800# pump on an n, a 3" diameter piston theoretically will lift 3.14 x diameter/2 squared times pressure divided by distance.

3.14 x (3/2 squared)x 800 psig/2' to end of lift arm = 2827# at the lift arm. But a couple of problems. That much weight on the aft end and the front end is off the ground (tractor only weighs roughly 3000#). Also, few systems are perfect, so you you are in good shape with your 1000#.

Mark

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