Fuel shut off solenoid. Did not work

[k0ua]

You can jumper 12volts straight to the solenoid to get it back in if it stops out in the field. The solenoid requires 12volts to open the fuel flow to the injection pump. You should have a print in the back of your owners manual. You have to find out why you are only getting a couple volts to the solenoid. If you are not 'up' on electrical trouble shooting, stop and find a friend/neighbor to help you out. Most problems are pretty simple. Not trying to 'slight' your problem... but hang in there....

Jerry do you know if there are two coils on the solenoid like my Kioti has? The first coil take 28 amps to pull back the armature of the solenoid, and a timer circuit applys this 12 volt power thru a 30 amp relay for 1 second, then the second coil requires less than 1 amp of current to "hold" the armature back against the spring pressure once the armature is pulled back by the large surge current. This small holding current is supply by the "ON" key buss voltage.. So when you turn off the key this small 12 volt supply line to the "hold" coil goes away and the solenoid snaps shut by the spring pressure. Do you know if the Mahindra works the same way?

 

[JerryK]

Jerry do you know if there are two coils on the solenoid like my Kioti has? The first coil take 28 amps to pull back the armature of the solenoid, and a timer circuit applys this 12 volt power thru a 30 amp relay for 1 second, then the second coil requires less than 1 amp of current to "hold" the armature back against the spring pressure once the armature is pulled back by the large surge current. This small holding current is supply by the "ON" key buss voltage.. So when you turn off the key this small 12 volt supply line to the "hold" coil goes away and the solenoid snaps shut by the spring pressure. Do you know if the Mahindra works the same way?

Don't know about his Mahindra... but my 5035 is set up to apply 12v to the solenoid thru a 5 amp fuse whenever the key is in the RUN postion. This wire also supplies 12v to the KSB timer and also the KSB solenoid for the first 20min plus or minus. He will have to check his print. But I'd bet money [ this is just an old saying, doesn't mean real money ] his Mahindra is made in India and has a simular Bosch injection pump as mine... [ I know, lot of 'assumating' here on my part.... ]

 

[k0ua]

Don't know about his Mahindra... but my 5035 is set up to apply 12v to the solenoid thru a 5 amp fuse whenever the key is in the RUN postion. This wire also supplies 12v to the KSB timer and also the KSB solenoid for the first 20min plus or minus. He will have to check his print. But I'd bet money [ this is just an old saying, doesn't mean real money ] his Mahindra is made in India and has a simular Bosch injection pump as mine... [ I know, lot of 'assumating' here on my part.... ]

Yep, so many different ways by so many manufactures to accomplish the same goal. Turn the dang tractor off with the key switch. Remember when we all just had a manual pull knob? Worked OK too. Unless you were too "stoopid" to push it back in when you tried to start it next time.. But I wouldn't know about that.!

 

[JerryK]

Yup, I'd rather have the manual shut-off, too... Speaking of stupid, I was running a J.D. excavator once. Had a **** of a time getting it to start jumping it with one of my old tractors. Then, couldn't figure how to get the durn thing to shut off. Finally got hold of the owner and he told me that you had to move the throttle all the way past FAST. Weird......

 

[Mobass]

Perhaps a better title to your thread would be "my tractor runs for an intermittent period of time and then shuts down by itself?"

Correct. Sorry for the misunderstanding.

 

[JD5210]

If you have not already done it. I would suggest you contact your dealer and ask that they e-mail you a picture and maybe an explanation of the starting system. Once you have this and if you would post it, I think we can help you figure out what is happening.

As already pointed out there is a few different ways that the fuel solenoid works.

 

[Mobass]

This morning we checked the volts and it read 11.5. Started right up ran around 20 min then died. Ran the wire backed checked the 15 amp fuse it was good all that is left is the shut off relay. We by passed the relay and it started but did not run like it normally does. Make me think that this is the problem. Called dealer told him what it has been doing and he thinks this is also the problem. But then again they charged me $350 for thinking they fixed it the last time.

 

[drajj5]

If you have no schematic, getting one would be the first operation to complete. See if there is a theory of operation of the circuit listed in the troubleshooting section. Can you post the schematic here so I could help analyze it?

I am with him on his suggestion,,,,, I had an electrical Gremlin just like you do. One of the first things I did was purchase a repair manual for my tractor and in one evening I was able to see how to troubleshoot the problem area and identify all aspects of electrical operation. For less than 100 bucks you will have the same resources that your dealer has- and have it at your fingertips in the comfort of your home.

Just letting you know that that book is worth every penny if you have the drive to make repairs on your own. However, doing service/diagnostics/repairs is not everyone's cup of tea. Some just farm out the work for a small fee....

 

[TnAndy]

When it quits running, pull the fuel line off AT THE TANK, and see if you have fuel flowing.

My Yanmar did this EXACT same thing....intermittently died...would start up and run anywhere from 5 minutes to many days with no problem.....then die again. Drove me AND the dealer nuts.

Dealer replaced the fuel solenoid twice before they finally figured out it was plastic shavings (from drilling out the tank for the fuel line fitting) along with a couple bugs...this 'marble' would float around in the tank until it centered over the fuel outlet, then shut off the flow.

Stop checking electric and check for FUEL.