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Crawlers, Dozers, Loaders & Backhoes Discussion Forum

John Deere 310E TLB Accessory Relay

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jsborn

01-26-2018 05:38:13




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I am trying to trouble shoot a problem with a friends 310E TLB. I found a problem with the Accessory Relay mounted in the side console. After replacing the relay all worked well for a few days and now problem has returned. I have not had time to put a meter on the relay yet but was hoping for some general help.

My questions are what powers up the Accessory relay? (this is the relay in the side console that looks like a aux starter relay) Is it picked up by the key switch? Does it stay picked up continuously when tractor is in use? Does any one have a wiring diagram showing this relay and what is powered by?

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jsborn

02-04-2018 05:05:28




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 Re: John Deere 310E TLB Accessory Relay in reply to jsborn, 01-26-2018 05:38:13  
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The Coil shows 15 ohms so it should draw only .8 amps at 12 volts so I would assume it is a continuous duty coil.
I would still like to find a wiring Diagram that shows the feed for this coil/ sol.
Thanks for your help



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jsborn

01-27-2018 05:38:38




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 Re: John Deere 310E TLB Accessory Relay in reply to jsborn, 01-26-2018 05:38:13  
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Thank you for your reply will check that when I get back to the tractor.

But back to one of my original questions does anyone have a wiring diagram or can anyone tell me where this Accessory Relay is powered from.



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jsborn

01-26-2018 14:53:41




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 Re: John Deere 310E TLB Accessory Relay in reply to jsborn, 01-26-2018 05:38:13  
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I think I know what your saying but would you please say it again ? I am not trying to be a Smart A I just am a bit confused.



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JDEM

01-26-2018 18:23:32




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 Re: John Deere 310E TLB Accessory Relay in reply to jsborn, 01-26-2018 14:53:41  
To say it with less words? Checking the amp-draw on the relay will tell you if it is designed for "continuous duty" or just "intermittent duty."

If it takes less then 1 amp to engage (close), it is made for continuous duty.
If it uses more then 1 amp to engage (close), it is made for intermittent duty.



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jsborn

01-26-2018 07:25:39




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 Re: John Deere 310E TLB Accessory Relay in reply to jsborn, 01-26-2018 05:38:13  
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When we got the new solenoid it came from JD and was suppose to be the right one. They did have a time finding it so I am going to look at my sales ticket and see if indeed they sold me the right part . I understand what your saying about cont. vs interm. that is why I am looking for the answers to my questions above.



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JDEM

01-26-2018 14:03:33




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 Re: John Deere 310E TLB Accessory Relay in reply to jsborn, 01-26-2018 07:25:39  
The only difference between a continuous-duty relay and an intermittent duty relay is spring pressure and amp-draw. A continuous-duty relay has very low spring pressure to hold the contacts open and subsequently,can use a weaker electro-magnet to engage. A continuous duty relay will draw less then one-amps @ 12 volts. Also not as reliable as an intermittent-duty due to the lower pressure holding the contacts closed. That is - unless you buy a pricey one with something better then copper contacts (like silver). A continuous-duty relay can draw 2-8 amps to engage. I have seen them used to replace continuous-
duty relays and have not personally seen one fail. Just run a lot hotter and waste power.

If not sure what you have - just check the amps it takes to engage. Should be 6/10ths of one amp and maybe less.

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Bob

01-26-2018 06:33:50




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 Re: John Deere 310E TLB Accessory Relay in reply to jsborn, 01-26-2018 05:38:13  
When you replaced the relay/solenoid did you use the correct (constant-duty) one?

They look like a normal starter solenoid, but a starter solenoid won't last long if continuously powered.



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