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John Deere Tractors Discussion Forum
Show Parts for Model:

5020 pto problem

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matt in uk

12-23-2006 06:50:46
80.0.133.15



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hi we have a 5020 with a pto problem it just keeps running whichever way the lever is, the linkage works ok and the diff lock works so i guess we have oil pressure. I cant find any pressure test ports for the pto does anyone know where they are and what the pressure should be. or even any common faults with these ie pto brake or valves sticking thanks in advance Matt




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G/MAN

12-23-2006 10:38:50
67.52.48.10



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 Re: 5020 pto problem in reply to matt in uk, 12-23-2006 06:50:46  
The PTO clutch is integral with the traction clutch on the rear of the engine. Remove the inspection plate underneath the clutch housing and have someone operated the PTO lever while the engine is running at low idle. You'll be able to see how it works and how it's actuated, and determine if the problem is mechanical or hydraulic. The problem could be a failed PTO brake that is not stopping the shaft fully, and drag in the PTO clutch itself is causing it to turn continuously. Will the shaft always turn, regardless of load, or is it just turning constantly with nothing connected to it? There's several potential problems that can be happening. You're going to have to do some basic diagnostics and report back with what you find.

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Matt in uk

12-25-2006 11:14:40
80.0.125.191



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 Re: 5020 pto problem in reply to G/MAN, 12-23-2006 10:38:50  
thanks for the interest does anyone know where the test ports are to test clutch / brake pressure i cant see them thanks Matt



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HTR

12-23-2006 17:38:42
69.72.49.48



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 Re: 5020 pto problem in reply to G/MAN, 12-23-2006 10:38:50  
The 5020 has a hydraulically operated PTO clutch pack.



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G/MAN

12-24-2006 12:12:29
67.52.48.10



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 Re: 5020 pto problem in reply to HTR, 12-23-2006 17:38:42  
My mistake - I'm used to the smaller New Gens and have never turned a wrench on a 5020. But most of the diagnostics still apply short of looking at the clutch itself. If the shaft is coasting, the PTO brake isn't functioning for some reason. If it's solidly engaged at all times, it's a mechanical problem in the clutch itself, which I would think would be unlikely. Somebody probably used the PTO brake to stop some large piece of PTO-driven equipment with no overrunning clutch on the shaft too many times and wiped out the brake itself. I assume (probably get myself in trouble again) that the PTO clutch and brake pressures simply flip-flop when the PTO it turned on or shut off, so a pressure test is the first thing to do.

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