John Deere 4440 Dead Batteries

Bill Becker · Oct 18, 2016

I have a JD 4440 that when you shut it off, there is something that still draws power from the batteries. The next morning the batteries are always dead. I have to charge them up before I can start the tractor. I always make sure everything in the cab is turned off and I always remove the ignition key. This year I replaced both batteries and installed a new alternator and it was ran through the John Deere shop as well. Any suggestions on what it may be? Thank you.

DeltaRed · Oct 18, 2016

Voltage regulator? Bad ignition switch?A bare wire touching the frame somewhere? I have a neighbor with a 4020 that does the exact same thing.We are about ready to totally 'gut'/strip the harness and completely rewire.

Cowmechanic · Oct 18, 2016

Sound's like a parasitic draw.Fully charge batteries,with engine off and key in off position disconnect negative battery cable that goes to ground.Put a test light in series between battery negative post and previously removed ground cable.If test light glows you have a draw.With test light still hooked up start disconnecting electrical circuits by pulling fuses.When test light goes out you have found the offending circuit.Also completEly disconnect alternator to eliminate it as a possible draw on batteries.Disconnect one circuit at a time.

matthies · Oct 18, 2016

A starter that has some age on it can draw batteries down with the brush dust internally, also does it have a radio with memory, any monitors? Dome light or switch pinched in doorway.

buickanddeere · Oct 18, 2016

How pray tell ? It's a 12V starter not a 24V electrical system.

Bill Becker · Oct 18, 2016

Thank you for all the feed back. I will start with each of the suggestions mentioned. It does not have any monitors hooked up as of right now, the dome light in the cab always turns off when the door is closed, and it has no radio memory and I always remove the ignition key and make sure the blower fans are off.

Bob M · Oct 18, 2016

Had the same issue with our 4430. Turned out the PO had miswired the alternator when he replaced the OEM unit with a Delco 10SI (didn't wire the aux #1 terminal thru the ign switch and idiot light).

Correcting the wiring fixed the problem.

bradley martin · Oct 18, 2016

Perhaps your batteries will not hold a charge. I would start by testing them. When they start to fail, they may well start it when it is warm, but loose their charge overnight.

Tx Jim · Oct 18, 2016

(quoted from post at 13:01:33 10/18/16) Perhaps your batteries will not hold a charge. I would start by testing them. When they start to fail, they may well start it when it is warm, but loose their charge overnight.

Ditto: Load test batteries if not load tested before now.

John Deere 4440 Dead Batteries

Bill Becker

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DeltaRed

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Cowmechanic

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matthies

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buickanddeere

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Bill Becker

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Bob M

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bradley martin

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Tx Jim

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