Thanks what do each of these things do?
To begin with, you need to focus on the starter-circuit. It is fairly simple to get diesel engine to crank over.Tractor is dead on a new battery so trying to troubleshoot issues
Sounds like the original battery is the issue.Thanks no but I have tested it with a multimeter and resistance is low. I have taken starter out and tested that and all fine. I have actually come full circle on this and I think the small battery is the issue. shows decent charge but when it trys to turn the starter the voltage drops rapidly and battery then takes ages to recover. going to get a new battery and try that. Cheers all
NO NO NO!!! testing ohms on a high-current circuit is not the proper way to test. Even a very small resistance can drop large voltage when talking 300Amps.I have tested it with a multimeter and resistance is low.
You can remove the starter from engine, clamp it (carefully) in bench-vice and momentarily power it with a battery. Expect a large spark (so you are not startled) and the starter should spin freely.Thanks guys. Have been trying to work through this. I think it might now be the starter motor that is killing the battery on start up. Battery voltage is dropping significantly on trying to start but not turning the starter. If I use a battery with high cca 760 vs the 330 in the original battery it will start. So how do I test the starter motor? Cheers