trouble with 4410 starting

[NGA]

Hi all. Hoping someone can give me some insight on some issues i'm having with my dad's 4410. About 2 weeks ago he called me up saying it wouldn't start. Stoped by and it just wouldn't crank. We threw some jumpers on it and it still wouldn't crank. i checked the battery and i had about 10v. so i told him to go get a new battery as this was the original and was about 4years old or so. Replaced the battery and all was good for about a week and then it did the same thing. So i'm thinking did we just get a faulty battery? so he went and exchanged it for another new one and all was good till yesterday. Something just isn't right here? seems like something is putting a drain on the battery or shortly it out or something. Any suggestions on where to start looking?

 

[beenthere]

:welcome:
Do you have the tech. manual (CD version or paper copy) available for the 4410?

Are you familiar with troubleshooting, and doing mechanical work? Just curious as a place to start here.

Also, is the 4410 the ehydro?

Are you able to work on the tractor, or doing the assist long distance?

Done any searching of TBN for the starting problem (include 4310 at least)?

 

[JD755]

With just the little information so far, I would guess a strong chance of alternator problems. If you can somehow get it started again, can you measure the battery voltage while running to see if it is getting charged. To expand on beenthere's questions, can you do electrical troubleshooting? I attached just a portion of the schematic to show the battery and alternator connections.

 

[NGA]

sorry no tech. manual. I am doing the work via in person not over the phone. I consider myself a hobbyist mechanic. my father on the other hand is fantastic at woodworking but not mechaical things so i offered to help. not an expert but can usually work through a problem with the right tools and help. I can generally work through electrical schematics. I'll try to get it started today after work and see if its charging properly . Do you know what the correct charging v's/amps should be. also this model is ehydro. to me it just seems very odd that it wouldn't take a jump when this first came about and thats when we replaced the battery.

 

[JD755]

At 2850 rpm (high idle) the voltage should be between 14.2 and 14.8 volts. If a battery has failed internally and a cell is shorted it can prevent even a jump start from working.

 

[NGA]

what would short out a battery??

 

[JD755]

Typically with use it is vibration and shock over time. An individual cell will collapse and short. Similar results can occur if a battery is allowed to fully discharge, or is overcharged. Alternators/voltage regulators can be the source of those problems. You should also pop the cell covers to see if each one has sufficient acid.

 

[NGA]

ok, i just stopped over to look at his tractor on my lunch break. He told me that once again it won't take a jump. i checked the battery and got 12.1v's. So if its the alternator it just fried another brand new battery. i guess my next step will be to take teh alternator off and have it tested since i can't get it started to check to see how much it is charging. agree?

 

[beenthere]

And take the battery in to get it tested too, to be sure it is, or isn't fried.

I'd suggest getting the ~$75 CD for the 4410. It will help you with being more comfortable checking the different possibilities out in the future. You will get good detail such as JD755 has posted.

 

[arrabil]

You have a multimeter? Put it in diode check mode and put the probes to positive and negative. If it reads continuous, you have a short.

Otherwise, I agree with JD755, you have a bad alternator.