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John Deere Tractors Discussion Forum

4520 circuit breakers

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Author  [Modern View]

04-05-2013 01:36:44

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My circuit breakers keep tripping when I run my lights (JD 4520). Is there a fix for this? Anyone ever convert to relays? or fuses?

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Cliff Nelson

04-05-2013 05:32:47

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 Re: 4520 circuit breakers in reply to jelfert, 04-05-2013 01:36:44  
The circuit breaker is doing it's job. Look for rubbed wires in the lighting circuit. I have found on several that they will rub through if the harness is touching the hyd pipes under the dash. Wouldn't hurt to try a different breaker to be sure as someone else said.

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Tim S

04-05-2013 06:16:27

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 Re: 4520 circuit breakers in reply to Cliff Nelson, 04-05-2013 05:32:47  
To add to what Cliff stated make sure the breakers have a clean tight connection, a bit of rust and looseness allows heat to build up making the breaker trip prematurely..

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Jethro Lilley

04-05-2013 03:22:22

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 Re: 4520 circuit breakers in reply to jelfert, 04-05-2013 01:36:44  
If the 4520 is original then the wiring is over 30 years old. The circuit breakers may be doing their job... look for a short where the wire has rubbed on metal for three decades. Try another breaker in that circuit as I've had those little suckers go bad.

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Tx Jim

04-05-2013 03:43:08

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 Re: 4520 circuit breakers in reply to Jethro Lilley, 04-05-2013 03:22:22  
I second what Jethro stated.

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04-05-2013 05:58:38

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 Re: 4520 circuit breakers in reply to Tx Jim, 04-05-2013 03:43:08  
I just had the wiring system gone through and new lights installed. The old circuit breakers/relays were used.

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