Electrical issue

[Rollcenter]

I know this is the Kioti page, but I'm not getting much help from the Bobcat page.

I have a Bobcat CT 335 ss which is basically the same "with a few changes" as a Kioti.

For quiet some time I have had a intermediate electrical problem. Upon starting, the tach, hour meter and lights would not work. After a few minutes running, they always started working.

Tractor set for a couple weeks and I hopped on it to use it, no start. No power to the dash, will not crank, no lights, no horn, nothing. No power to most of the dash.

I can turn key backwards and the glow plug light does come on and I can hear the plugs cycle. With key off, I can turn flashers on and hear the flasher buzz/click but the lights themselves do do light up, almost sounds like low voltage there. A couple different times I have got the fire wall mounted relays clicking like crazy and the dash lights up for a split second.

I have cleaned terminals, checked ground cable. I am getting close to 13 volts at starter and the same to the key switch.

HELP!!!!

 

[Sandlot]

You may try to leave your volt meter hooked up to the battery, then try to turn you lights on or crank it over. You may find that your battery shows 13 volts with no load, buy lays down when you load it up.

 

[Rollcenter]

You may try to leave your volt meter hooked up to the battery, then try to turn you lights on or crank it over. You may find that your battery shows 13 volts with no load, buy lays down when you load it up.

Thanks, I put a battery charger on Boost-Start and tried, I was hoping that it would be just a bad battery, cant even get a click from the starter!

Sure Got me puzzled!!

 

[BleedingOrange]

Check and clean both ends of both battery cables, real good. Make sure you are making a good ground connection on the negative side of the battery cable going to the tractor frame.

 

[murphy1244]

Could be ignition switch, that's been going on.

 

[Rollcenter]

I've wondered about that.....

I have tested and am getting full power TO the switch, but not sure what I am getting out of the switch.

What's the best way to test?

 

[Rollcenter]

Check and clean both ends of both battery cables, real good. Make sure you are making a good ground connection on the negative side of the battery cable going to the tractor frame.

I've cleaned it REALLY good as I have read that there were some issues with the ground. I also added a EXTRA ground wire by placing the negative booster cable on the negative post of battery then the other end on a area of BARE METAL on the chassis. I also at the same time placed the positive side of the booster cable on the positive battery post and the other end on the positive side of starter, hoping this would eliminate any possibility of bad cables. Nothing changed....

 

[ritcheyvs]

You may try to leave your volt meter hooked up to the battery, then try to turn you lights on or crank it over. You may find that your battery shows 13 volts with no load, buy lays down when you load it up.

This is a good test but repeat it with the voltmeter connected to the big terminal on the starter. That should reveal any bad battery cables or a poor main ground.

There should be a 60 amp fuse somewhere that carries battery power to almost everything except the starter motor; have you checked that?

Sorry but I don't have a schematic for your machine so it's hard to get more specific.

 

[Rollcenter]

This is a good test but repeat it with the voltmeter connected to the big terminal on the starter. That should reveal any bat battery cables or a poor main ground. There should be a 60 amp fuse somewhere that carries battery power to almost everything except the starter motor; have you checked that? Sorry but I don't have a schematic for your machine so it's hard to get more specific.

Yes sir I checked the 60 amp fuse, it checks fine. Whats strange is I can turn the key backwards and get the glow plug light on the dash but nothing else when turning the key to the on or start positions.

 

[SSdoxie]

With key on, check voltage at the "I" terminal of the switch (red wire with white stripe). It should be same voltage as power into the switch on the solid red wire. If no voltage or you see a drop in voltage, then suspect switch problem. This circuit supplies power to the fuse panel, then to the OCU, & Switched Power relay through Red w/blu stripe wires, and from switched power relay to the dash on red w/blk wire.
All of the components (OCU, relays, dash panel, & timer control) all have smaller black ground wires going to frame. Be sure to check any or all of these to see if ground connection is loose somewhere.