testing solenoid on starter motor

[tonybalnaves]

I have a Yanmar ym2000 and was having trouble starting it and keeping it running due to dirty diesel ...fixed that problem but now I have nothing when I turn ignition .Recharged battery ..still nothing ..absolutely dead Ithink I may have burnt out the solenoid on the starter motor ..Is there an easy way to test this without removing the starter motor?

 

[flyerdan]

Solenoids don't normally burn out, the contacts get worn and they will click without engaging the starter motor usually. I'd start by verifying that there was voltage at the battery cable on the starter with a DMM. Then use a remote starter or a heavy piece of wire to test (from the battery cable on the starter to the wire on the solenoid that comes from the ignition). This will completely bypass all safety interlocks so be sure that the tractor is in neutral and sufficiently blocked to avoid movement, and all pto functions are disengaged. Probably should check all that first, as if one of the many interlocks gets sloppy it might take some fussing to make it work right, which will give the symptoms you're having.

 

[tonybalnaves]

cheers thanks ..will try that Just that I heard that if you continue to keep trying to start the tractor for long periods the solenoid will burn out ...when I turn the ignition switch on there is not a sound... not a click nothing

 

[pat32rf]

Sounds more like an interlock, broken wire, blown fuse, etc.

 

[k0ua]

Did you measure for voltage on the starter solenoid terminal?

 

[100 td]

Also if it burns out, you usually see and smell the smoke.
Then you have to get some of this, but getting it back in is the hard part!

 

[jimmysisson]

Trust Lucas for that!

Jim

 

[Junkyard Jim]

If fixing your fuel problem had anything to do with getting your hands or tools any where near any wires, go back and make sure you didn't accidently pull a wire loose from somewhere in that area. Inspect to make sure that all wires are connected to something. A multimeter check for voltage is a good way but sometimes a visual inspection is all it takes. Most problems that start after fixing something are caused by something that happened during the repair.

good luck

 

[skyhook]

 

[pat32rf]

When you try to start the engine, your voltage should drop to almost zero from 12-14volts in the above picture..
That shot is for a positive ground installation, but either way, your voltage should drop. If it doesn't, then your solenoid is not closing for one reason or another. Might just be bad continuety between the solenoid body and the starter...