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| John Deere Tractors Discussion Forum |
Topic: jd 620 power takeoff
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| Dan Gunter
12-20-2012 13:41:46
173.17.123.217
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I"m working on a 620 and the transmission oil is leaking into the pto and filling it up. Does anyone know if you can replace the seal by just removing the clutch pack and leaving the hydraulic. Thanks
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| Fred from MO
12-20-2012 14:34:05
24.119.63.178
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Re: jd 620 power takeoff in reply to Dan Gunter, 12-20-2012 13:41:46
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|    Here is a picture of the 60. I would suggest some sort of hoist for the rockshaft assembly. It is rather heavy and does not have a symetrical center of mass so it wants to tilt on you when you get it free. The old seal was a one piece. You will have to order 2 new seals and place them on the shaft back to back. You want the fluid in the transmission to stay on that side and the fluid in the PTO to stay its side. Does not hurt to pack a little grease between the 2 seals upon assembly if I remember. Pics worth a thousand words so here they are. I am assuming the 60 like mine will be very similar to your newer model. Also a good time to redo the PTO clutches if they need it and bushings etc.
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| Dan Gunter
12-20-2012 17:59:41
173.17.123.217
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Re: jd 620 power takeoff in reply to Fred from MO, 12-20-2012 14:34:05
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| Thanks for the picture The tractor I'm working on is original and I will address the other issues as well. I don't know why but you can never catch all the oil. Thanks for the help
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| Fred from MO
12-20-2012 14:36:45
69.55.155.226
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Re: jd 620 power takeoff in reply to Fred from MO, 12-20-2012 14:34:05
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| Also a great time to flush out the transmission fluid and PTO fluid, and rockshaft fluid as it will run all over your shop floor like in my picture!! LOL!
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| jd2cylman
12-20-2012 15:28:45
173.23.166.110
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Re: jd 620 power takeoff in reply to Fred from MO, 12-20-2012 14:36:45
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| Also a great time to check the axle bearing freeplay and tighten the retaining nuts if needed!
Adrian
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| Mike M
12-20-2012 13:46:39
24.140.0.120
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Re: jd 620 power takeoff in reply to Dan Gunter, 12-20-2012 13:41:46
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| The whole rockshaft housing will have to come off to get to that seal. You can change the seals once it's off without having to remove the pto clutch parts.
Once in there I also like to check and adjust the rear axle bearings play. If you have any rear axle oil seal leakage do them at this time too.
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| Dan Gunter
12-20-2012 14:21:06
173.17.123.217
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Re: jd 620 power takeoff in reply to Mike M, 12-20-2012 13:46:39
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| Thanks for the info. sounds like a fun job
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