JD 4310 Rear PTO not turning: John Deere Review  -- John Deere Tractors Discussion Forum and Review JD 4310 Rear PTO not turning: John Deere Review -- John Deere Tractors Discussion Forum

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 05-31-2009, 21:02 Post: 163092
Brudertd



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 JD 4310 Rear PTO not turning

I have a JD 4310 whose rear PTO won't spin. When I activate the switch, the PTO indicator light on the dash illuminates, but the shaft doesn't spin. I can mannually turn the shaft slightly less than 1/4 turn in either direction until it stops. Any idea what the problem may be or thoughts on further trouble shooting? Tom






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 05-31-2009, 21:39 Post: 163093
kwschumm



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 JD 4310 Rear PTO not turning

Does the indicator light on the right fender show any combination of long and short flashes?






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 06-01-2009, 12:44 Post: 163102
Brudertd



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 JD 4310 Rear PTO not turning

Not that I noticed. I did not see any flashing lights.






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 06-01-2009, 17:31 Post: 163111
kwschumm



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 JD 4310 Rear PTO not turning

Just an idea here. It's an electric PTO clutch. Maybe there's a wiring problem to the clutch itself (torn or disconnected wire or bad fuse).






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 06-01-2009, 21:52 Post: 163116
kwschumm



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 JD 4310 Rear PTO not turning

I looked up info in the manual. It could be electrical or mechanical. Here's some electrical troubleshooting info from the manual (you need an ohmmeter)

Park machine safely in neutral with parking brake on first.

1. Check Rear PTO Switch
-Open the right side control panel to access rear PTO switch
-Disconnect rear PTO switch from wiring harness
-Use ohmmeter or continuity tester to test switch continuity in on and off positions
With switch OFF there should be continuity between terminals A&C, D&F, G&H, and nowhere else.
With switch ON there should be continuity between A&B, D&E and nowhere else.

2. Check rear PTO solenoid
-Access the solenoids on the right side of machine under floorboard. They look like two round solenoids wired into one connector.
-Disconnect the solenoid connector from wiring harness. As you look at the end of the connector there are four pins, call them A,B,C and D from left to right with notched end of connector on top.
-Use ohmmeter to measure resistance between terminals A&B (rear PTO solenoid). It should be between 10.5-11.5 ohms. C&D should also be the same measurement (that's the MFWD solenoid).
-Check for grounds or shorts by testing between each pin and the bare metal of the solenoid case.

If those tests don't pan out the news sounds bad. The PTO mechanical trouble shooting table for "Rear PTO Will Not Engage" gives four reasons for rear PTO not engaging, none of them good. PTO clutch damaged or worn, Cogs on gear shift or shift collar damaged or worn, Gears and/or bearings worn, or oil pressure not sufficient to PTO clutch.






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 06-02-2009, 07:34 Post: 163117
Brudertd



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 JD 4310 Rear PTO not turning

Thanks for the trouble shooting guide. I'll keep my fingers crossed that it's an electrical problem. Will keep you posted....Tom






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 06-07-2009, 22:27 Post: 163281
Brudertd



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 JD 4310 Rear PTO not turning

Can you provide me a schematic of the terminal configuration? I pulled the PTO switch and tried checking the continuity as mentioned above, but wasn't sure I had the correct terminal selected for each test. The only terminals marked on my switch are the A, B, and C. I didn't see any other designations on the switch for terminals D-H. My initial assessment (assuming I had the correct terminal selected for each test) is that the switch is bad. I would like to confirm I had the correct terminals just to be certain.
Thanks!! Tom






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 06-08-2009, 19:57 Post: 163312
kwschumm



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 JD 4310 Rear PTO not turning

Quote:
Originally Posted by Brudertd | view 163281
Can you provide me a schematic of the terminal configuration? I pulled the PTO switch and tried checking the continuity as mentioned above, but wasn't sure I had the correct terminal selected for each test. The only terminals marked on my switch are the A, B, and C. I didn't see any other designations on the switch for terminals D-H. My initial assessment (assuming I had the correct terminal selected for each test) is that the switch is bad. I would like to confirm I had the correct terminals just to be certain.Thanks!! Tom



Email sent.






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 06-18-2009, 07:41 Post: 163485
Brudertd



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 JD 4310 Rear PTO not turning

Thanks for schematic Ken. I've determined the switch is not the culprit and will check the solenoid next. Iíll need to get a copy of the service manual before too long....

Tom






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 06-24-2009, 16:43 Post: 163613
Brudertd



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 JD 4310 Rear PTO not turning

I've determined the solenoids are OK. Both showed 11.5 on the volt ohm meter. Everyone I talk to, including my local JD dealer, seems to think it is something other than a mechanical problem. I'm going to drop if off at the dealer tonight. I'll keep you posted.
...Tom






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Discussion Boards > Active Subjects > Messages as Posted > John Deere Review Forum

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