Grand L5030 will not start using the key

[Jayhawk238]

About four days ago I parked my tractor and yesterday I went to start it and it would not start. There was no clicking, no attempt to turn over no nothing. Everything else is working fine. All dash lights, head and tail lights, radio, heater fan, etc. The battery is only about 4 months old and fully charged. There is power going to the starter but no power going to the solenoid. I checked all fuses, including the slow fuses none were blown. A auto mechanic friend came over and we tried the hot wire trick. The engine turned over very fast and strong but would not fire off. Our thinking is that the hot wire is maybe bypassing the fuel (system) pump. That is just a guess! The dash lights say the glow plugs are working. The seat switch is working as far as we can tell and the PTO is turned off. I was blowing snow four days ago and turned off the PTO, backed into the tractor shed and shut down the tractor.
Any and all help is needed. It's suppose to start snowing Thursday night and snow for several days.

 

[JerryMT]

About four days ago I parked my tractor and yesterday I went to start it and it would not start. There was no clicking, no attempt to turn over no nothing. Everything else is working fine. All dash lights, head and tail lights, radio, heater fan, etc. The battery is only about 4 months old and fully charged. There is power going to the starter but no power going to the solenoid. I checked all fuses, including the slow fuses none were blown. A auto mechanic friend came over and we tried the hot wire trick. The engine turned over very fast and strong but would not fire off. Our thinking is that the hot wire is maybe bypassing the fuel (system) pump. That is just a guess! The dash lights say the glow plugs are working. The seat switch is working as far as we can tell and the PTO is turned off. I was blowing snow four days ago and turned off the PTO, backed into the tractor shed and shut down the tractor.
Any and all help is needed. It's suppose to start snowing Thursday night and snow for several days.

"There is power going to the starter but no power going to the solenoid."

The power to the starter comes through the solenoid contacts so I don't understand this statement. If the solenoid isn't working the starter won't turn over the engine. You said you hot wired it to get it to crank so you bypassed the solenoid.

Do you have an electric solenoid to open the fuel valve to the IP? Is the fuel solenoid opening to supply fuel to the IP? Did you see white vapor coming out of the exhaust when cranking? If you didn't then that would indicate no fuel. When you turn the key to ON do you hear the fuel solenoid click?

Do you have the operator's manual? Does it have the circuit diagrams in it? It maybe that the starter solenoid and the fuel solenoid are on the same so circuit so if there is no power to the starter solenoid there's no power to the fuel solenoid. These Kubota's have a few relays for the safety switches so you best bet is to study the circuit diagrams and try to figure out where there is an open circuit to the starter and fuel solenoid.

Sorry I can't be of more help, but Kubota electricals vary between models and years and they are hard to keep up with. Someone one with more experience than I will likely be able to be of more help

 

[Dave_eng]

The dash panel, aka :Intellipanel has brains.
If the engine is not cranking for a reason the intellipanel can sense it should be providing a message on the display.
Here is a snapshot of part of a page of the WSM.

I have attached the wiring diagram page for the HST starting system.
Here is the no crank troubleshooting section of the WSM.

Dave

 

[Tx Jim]

If not already performed I suggest to remove/clean/tighten all four(4) battery cable connections.

 

[Jayhawk238]

If not already performed I suggest to remove/clean/tighten all four(4) battery cable connections.

Thanks Tim. Did that first off. Going to hunt down the safety switches today looking for a stuck one.

 

[Jayhawk238]

The dash panel, aka :Intellipanel has brains.
If the engine is not cranking for a reason the intellipanel can sense it should be providing a message on the display.
Here is a snapshot of part of a page of the WSM.
View attachment 91825


I have attached the wiring diagram page for the HST starting system.
Here is the no crank troubleshooting section of the WSM.
View attachment 91828

Dave

Checked all fuses and they are good. Going to hunt down the safety switches today to see if one is stuck.

 

[fried1765]

About four days ago I parked my tractor and yesterday I went to start it and it would not start. There was no clicking, no attempt to turn over no nothing. Everything else is working fine. All dash lights, head and tail lights, radio, heater fan, etc. The battery is only about 4 months old and fully charged. There is power going to the starter but no power going to the solenoid. I checked all fuses, including the slow fuses none were blown. A auto mechanic friend came over and we tried the hot wire trick. The engine turned over very fast and strong but would not fire off. Our thinking is that the hot wire is maybe bypassing the fuel (system) pump. That is just a guess! The dash lights say the glow plugs are working. The seat switch is working as far as we can tell and the PTO is turned off. I was blowing snow four days ago and turned off the PTO, backed into the tractor shed and shut down the tractor.
Any and all help is needed. It's suppose to start snowing Thursday night and snow for several days.

Move to Arizona......Quickly!

 

[Jayhawk238]

Move to Arizona......Quickly!

 

[Jayhawk238]

The dash panel, aka :Intellipanel has brains.
If the engine is not cranking for a reason the intellipanel can sense it should be providing a message on the display.
Here is a snapshot of part of a page of the WSM.
View attachment 91825


I have attached the wiring diagram page for the HST starting system.
Here is the no crank troubleshooting section of the WSM.
View attachment 91828

Dave

My tractor does not have that. Maybe that was an option or Kubota upgraded after I purchased it?? Wish it had that option, that would have been a huge help.