Still trying to trouble shooti no start no crank problem

[BudGoat]

I started a new thread to emphasis a new question.

I have a new battery with 13.6 volts, new cables and ends, all fuses are good. Ordered new safety switches for clutch pedal, PTO and HST pedal sensor. Seat switch is OK.

I am now searching out the other possible culprits using using the wiring diagram. I am trying to locate the Engine Stop Solenoid, Starter Relay, ECU, and seat tilt switch.

In the attached photo of the relays under the dash instrument panel I need to know what each of the four relay units do (e.g., their functions).

I have a full service manual and wiring schematic but no labeled images of these relays. Which is which?

I know one is the starter relay and wonder which is the fuel shut off circuit and what the rest are. Any ideas? Thanks !


The image of the broke down Kubota on the steep hill is simply for sympathy purposes

 

[85Hokie]

Have you checked this guy?

 

[GreensvilleJay]

To see what relay is what, write down the color of wires going to one, then check the wiring diagram for which relay has all those wires.
Looks like only 4 relays, so shouldn't be too hard a job.

 

[North Idaho Wolfman]

Turn the key to run and jump the starter solenoid.
Does it crank?
Does it start and run?

 

[BudGoat]

Have you checked this guy?

View attachment 132258

View attachment 132259

Yes. Checked each fuse with meter rather than relying on visual. Had a spare 50 amp so put it in.

 

[BudGoat]

Turn the key to run and jump the starter solenoid.
Does it crank?
Does it start and run?

Did that. It would not fire or run.

 

[BudGoat]

Crabked

Did that. It would not fire or run.

cranked but no start up

 

[BudGoat]

C

Turn the key to run and jump the starter solenoid.
Does it crank?
Does it start and run?

Cranked fine but would not run

 

[Matchstick]

My L3430 puked out smoke and stopped. Ended up being a main fuse by the battery. It was cracked open for years and probably just corroded. There is a 30A glow plug one in there too. They are large squareish fuses called cartridge fuses....not your average ones. See if when you turn the key on it clicks after 5 or 10 seconds to let you know the glow plugs heated up. Could be the glow plug one. My 2.5 cents worth.

 

[BudGoat]

To see what relay is what, write down the color of wires going to one, then check the wiring diagram for which relay has all those wires.
Looks like only 4 relays, so shouldn't be too hard a job.

Thanks! Will do.

My L3430 puked out smoke and stopped. Ended up being a main fuse by the battery. It was cracked open for years and probably just corroded. There is a 30A glow plug one in there too. They are large squareish fuses called cartridge fuses....not your average ones. See if when you turn the key on it clicks after 5 or 10 seconds to let you know the glow plugs heated up. Could be the glow plug one. My 2.5 cents worth.

thanks

I check all those fuses and all is good. Gave them a visual inspection then a meter test as I have had fuses that looked good but were bad in the pasr

On a wiring diagram I saw an inline fusible link. Not sure if my tractor has one of those.

 

[North Idaho Wolfman]

I need some back story to what Exactly happened to lead to this.

Was it running and just died, was it parked overnight?

 

[TECH101]

Try jumping the starter and see if it runs.

Very simple procedure, use a screwdriver with insulated handle to jump from small post (spade) to big post (battery cable) at the starter

If it doesn't work..... It might be the actual battery cable itself, test voltage with multimeter from starter motor to battery

Other possibilities could be a bad ground wire, bad battery (load test) or even the good old OPC, wires like to corroded there at the plug

Hope this helps

 

[BAP]

Try jumping the starter and see if it runs.

Very simple procedure, use a screwdriver with insulated handle to jump from small post (spade) to big post (battery cable) at the starter

If it doesn't work..... It might be the actual battery cable itself, test voltage with multimeter from starter motor to battery

Other possibilities could be a bad ground wire, bad battery (load test) or even the good old OPC, wires like to corroded there at the plug

Hope this helps

Did you read his posts? He said he put in a new battery and cables. Said that it cranks over when Wolfman asked about crossing the starter.

 

[BudGoat]

I need some back story to what Exactly happened to lead to this.

Was it running and just died, was it parked overnight?

the story:

a couple weeks ago I was using the RDTH 84 finish mower to clip the pasture. When I got down the steep slope it ran out of diesel. My fuel gauge is faulty.

I put in 5 gallons and it cranked a bit to bleed the injectors, normally a very simple procedure as I do it often. Then it stopped cranking. I had issues before with the positive cable so I up graded it, took the battery out and load tested it and it was bad. O’Reilly replaced it under warranty. I reinstalled it with cable and new cable ends and those red/green corrosion control washers. I check the short black ground cable with an Ohm meter.

Voltage at starter cable connection at starter was 13.6 volt. The I could not get any readings off the instrument panel. I missed the small cable to the positive terminal, so after that was remedied the gauges worked.

Only problem is no crank at the new Kubota ignition key. Cranks good by jumping across the stater solenoid with ignition key on and the gauge panel reads “Depress Clutch” and “Error 20”

Error 20 is explained in a note on the wiring diagram as an HST part installed in a non HST tractor, or something like that????

I pulled all the safety switches to clutch pedal, HST pedal, seat and PTO. My attempts to jump across those switch circuirs still did not allow engine cranking across the key.

Tropical Storm Beryl’s torrential rain is blowing through here so working out on the tractor has to wait

My next step will be to pull and bench test the four relays under the instrument panel. Then find and test the Engines Stop Solenoid and its relay.

I over looked two items that I need to investigate. The seat tilt switch. My seat is after market and does not tilt. I need to find out what I on installation with tilt switch wires.
My other concern is I read somewhere that the HST pedal needs to be in neutral to start the engine. Might be my problem all along.

Wolfman. I appreciate your help. Years ago you coached me through power beyond on this tractor. Back then my email was dirtpiranha.

Try jumping the starter and see if it runs.

Very simple procedure, use a screwdriver with insulated handle to jump from small post (spade) to big post (battery cable) at the starter

If it doesn't work..... It might be the actual battery cable itself, test voltage with multimeter from starter motor to battery

Other possibilities could be a bad ground wire, bad battery (load test) or even the good old OPC, wires like to corroded there at the plug

Hope this helps

 

[BudGoat]

the story:

a couple weeks ago I was using the RDTH 84 finish mower to clip the pasture. When I got down the steep slope it ran out of diesel. My fuel gauge is faulty.

I put in 5 gallons and it cranked a bit to bleed the injectors, normally a very simple procedure as I do it often. Then it stopped cranking. I had issues before with the positive cable so I up graded it, took the battery out and load tested it and it was bad. O’Reilly replaced it under warranty. I reinstalled it with cable and new cable ends and those red/green corrosion control washers. I check the short black ground cable with an Ohm meter.

Voltage at starter cable connection at starter was 13.6 volt. The I could not get any readings off the instrument panel. I missed the small cable to the positive terminal, so after that was remedied the gauges worked.

Only problem is no crank at the new Kubota ignition key. Cranks good by jumping across the stater solenoid with ignition key on and the gauge panel reads “Depress Clutch” and “Error 20”

Error 20 is explained in a note on the wiring diagram as an HST part installed in a non HST tractor, or something like that????

I pulled all the safety switches to clutch pedal, HST pedal, seat and PTO. My attempts to jump across those switch circuirs still did not allow engine cranking across the key.

Tropical Storm Beryl’s torrential rain is blowing through here so working out on the tractor has to wait

My next step will be to pull and bench test the four relays under the instrument panel. Then find and test the Engines Stop Solenoid and its relay.

I over looked two items that I need to investigate. The seat tilt switch. My seat is after market and does not tilt. I need to find out what I on installation with tilt switch wires.
My other concern is I read somewhere that the HST pedal needs to be in neutral to start the engine. Might be my problem all along.

Wolfman. I appreciate your help. Years ago you coached me through power beyond on this tractor. Back then my email was dirtpiranha.

What is the OPC?

 

[BudGoat]

Wolf man

Here is the story: not sure if my first reply went through.

A couple weeks ago I was using the Bushhog RDTH 84 finish mower to clip the pasture. When I got down the steep slope it ran out of diesel. My fuel gauge is faulty. I knew that.

I put in 5 gallons and it cranked a bit to bleed the injectors, normally a very simple procedure as I do it often. Then it stopped cranking. I had issues before with the positive cable so I up graded it, took the battery out and load tested it and it was bad. O’Reilly replaced it under warranty. I reinstalled it with cable and new cable ends and those red/green corrosion control washers. I check the short black ground cable with an Ohm meter.

Voltage at starter cable connection at starter was 13.6 volt. Then I could not get any readings off the instrument panel. Blank. I missed the small cable to the positive terminal, so after that was remedied the gauges worked.

Only problem is no crank at the new Kubota ignition key. Cranks good by jumping across the starter solenoid with the ignition key on and the gauge panel reads “Depress Clutch” and “Error 20”. But no engine start.

Error 20 is explained in a note on the wiring diagram as an HST part installed in a non HST tractor, or something like that????

I pulled all the safety switches on the clutch pedal, HST pedal, seat and PTO. My attempts to jump across those switch circuirs still did not allow engine cranking across the key.

Tropical Storm Beryl’s torrential rain is blowing through here so working out on the tractor has to wait

My next step will be to pull and bench test the four relays under the instrument panel. Then find and test the Engines Stop Solenoid and its relay.

I over looked two items that I need to investigate. The seat tilt switch. My seat is after market and does not tilt. I need to find out what I did on installation with those tilt switch wires.

My other concern is I read somewhere that the HST pedal needs to be in neutral to start the engine. Might be my problem all along.

Wolfman. I appreciate your help. Years ago you coached me through power beyond on this tractor. Back then my email was dirtpiranha.

 

[Dustball]

the story:

I pulled all the safety switches to clutch pedal, HST pedal, seat and PTO. My attempts to jump across those switch circuirs still did not allow engine cranking across the key.

Not all safety switches are 'on' to start the engine. It's a combination of some on and some off.

the story:

My next step will be to pull and bench test the four relays under the instrument panel. Then find and test the Engines Stop Solenoid and its relay.

I over looked two items that I need to investigate. The seat tilt switch. My seat is after market and does not tilt. I need to find out what I on installation with tilt switch wires.
My other concern is I read somewhere that the HST pedal needs to be in neutral to start the engine. Might be my problem all along.

The engine stop solenoid has nothing to do with the starter not running.

Do you have a HST or GST transmission? Error 20 is only for the GST transmission, does not appear for HST.

 

[GreensvilleJay]

That 'comm error' is probably for the pita CAN bus network.....
There 'should' be some kind of 'reset the network' command though don't hold your breath....

I'd disconnect the battery at least 1/2 hour, then reconnect,turn key on and see what happens.

 

[D2Cat]

Not all safety switches are 'on' to start the engine. It's a combination of some on and some off.



The engine stop solenoid has nothing to do with the starter not running.

Do you have a HST or GST transmission? Error 20 is only for the GST transmission, does not appear for HST.

View attachment 132396

OP list his tractor as HST.

 

[BudGoat]

Not all safety switches are 'on' to start the engine. It's a combination of some on and some off.



The engine stop solenoid has nothing to do with the starter not running.

Do you have a HST or GST transmission? Error 20 is only for the GST transmission, does not appear for HST.

View attachment 132396

Oh! Mine is an HST. Make sense now.