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Order Ford 4000 Parts Online

Ford 4000

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Zach bair

01-26-2016 10:10:10

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Hi looking for some advice on my ford 4000. It's a 66' with 3cyl and select o speed trans. I'm having issues with the pto. The pto runs fine until you put it under a load once it's under a load it completely stop spinning any advice would be great thanks Zach

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Sean in PA

01-27-2016 11:53:20

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 Re: Ford 4000 in reply to Zach bair, 01-26-2016 10:10:10  
The S-O-S transmission has its own internal hydraulic pump up in the front of the transmission that provides the hydraulic pressure for all of the functions within the transmission including the PTO clutch. If the transmission is shifting fine in all gears then the pump itself should be fine, but you can go through the pressure tests in the service manual to be sure. If the pressure test shows the pump is good then any pressure issue related to the PTO would be the result of a leak somewhere.

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zach bair

02-05-2016 23:32:19

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 Re: Ford 4000 in reply to Sean in PA, 01-27-2016 11:53:20  
Thanks Sean I will get the pressure checked on it then go from there is drives great in all gears so guess either it's bypassing somewhere or the pto clutches are shot

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Larry NCKS

01-27-2016 01:10:39

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 Re: Ford 4000 in reply to Zach bair, 01-26-2016 10:10:10  
It's likely just a PTO control cable adjustment, but could be worn clutches or lack of hydraulic pressure.

Here's the way I like to adjust that cable, engine not running:

1. Remove the conduit nut at the transmission cover.

2. Fully engage the PTO control.

3. Remove the jam nut that secures the PTO control to the dash.

4. Loosen the upper conduit nut.

5. Making sure to maintain the fully engaged position of the control handle, turn it counter clockwise until the conduit is snug against the transmission cover fitting.

6. Ascertain your adjustment by attempting to pull the conduit away from the transmission fitting. You should not be able to move it without extreme pressure.

7. Replace and/or tighten all hardware.

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zach bair

01-27-2016 10:16:49

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 Re: Ford 4000 in reply to Larry NCKS, 01-27-2016 01:10:39  
Thanks Larry I'll check the adjustment again on it is the hyd pressure for pto from the pump on the engine or is there another pump internal for that

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Larry NCKS

01-26-2016 16:19:51

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 Re: Ford 4000 in reply to Zach bair, 01-26-2016 10:10:10  
Quoting Removed, click Modern View to see

Not sure I'm totally understanding you. In one post you say it spins with no to light load. This would be considered normal, especially when the oil is cold.

Now then, when you put the thing under load and it stops, you do have the PTO control cable pulled completely out in the engaged position?

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zach bair

01-26-2016 19:45:47

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 Re: Ford 4000 in reply to Larry NCKS, 01-26-2016 16:19:51  
Larry I have a snow blower hooked to it with pto disengaged it very slowly spins which I understand from others is normal now when u engage pto it kicks right in spins blower no problem until u back it into the slightest amount of snow it just stops turning all togetger

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Sean in PA

01-26-2016 10:38:02

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 Re: Ford 4000 in reply to Zach bair, 01-26-2016 10:10:10  
When you push the handle in does the PTO come to a complete stop on its own without anything attached to the PTO? If so, then it may be as simple as an adjustment of the PTO control cable. If you have either a Ford or I&T service manual the procedures is in there. If you don't have a service manual, get one.

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zach bair

01-26-2016 15:23:47

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 Re: Ford 4000 in reply to Sean in PA, 01-26-2016 10:38:02  
Yes I do have the manual I have a very big and detailed manual for it nothing about this though . I have played with cable adjustment as well either way nothing on pto or even my snow blower hooked up to it under no load the shaft will slowly spin when disengaged

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