Seat Switch?

[arksdad]

Can anyone tell me how to disconnect the seat switch on a NH T2310? The dealer replaced the switch once [ I should say, the tractor is brand new], but the tractor still shuts off everytime I even wiggle in the seat. I know,your going to tell me it's there for a reason, But you have to realize it's a real pain in the butt!

 

[JC-jetro]

Those switches are normally open, what that means is that by the action of a spring the contact are pushed apart. When you take the seat your weight will close the contact, hence completing the ignition/starting circuit. The ignition circuit might have several safeties such as seat switch or clutch neutral safety switch. The ignition or starting circuit is in series and all the safeties keep the circuit open unless you sit or press the clutch, exactly same thing.

Now answer to your question is to just simply jump the contact, take the leads of the switch and tie them together with a piece of wire or some mechanical means. I would never circumvent neutral safety switch and seat switch is still questionable. Have you tried to adjust it?.

JC,

it work exactly the same as my neutral safety switch below. I don't have a seat switch

Edit: since diesel tractor does not have normal ignition system your seat switch actually is in the circuit that has fuel solenoid shut off. At any rate concept is the same.

 

[jinman]

Can anyone tell me how to disconnect the seat switch on a NH T2310? The dealer replaced the switch once [ I should say, the tractor is brand new], but the tractor still shuts off everytime I even wiggle in the seat. I know,your going to tell me it's there for a reason, But you have to realize it's a real pain in the butt!

The old style tractors used to be easy to bypass until they changed the circuit a bit and put the switch into the seat itself. Do you have the Owner's Manual for your tractor? If so, can you scan the first couple of pages of the electrical schematic in the back of the manual and post them? If you can't scan them, a good digital photo is sometimes readable. If you will show me the circuit, I'll tell you how to bypass the switch.

 

[RobertN]

From what I have heard, the ROPS police are pansies compared to the seat switch police... I would be very cautious about that

If you will show me the circuit, I'll tell you how to bypass the switch.

 

[Drewtrac]

Make every effort to adjust the switch. If you are unable to do so ask your dealer. If your dealer is unable to do so call New Holland. The consequences of bypassing the switch or any other safety device can be dire. They are there for a reason. As for those providing instructions on bypassing these devices please give it a second thought for everyone's sake. That kind of info needn't be passed along on this type of forum!

 

[jinman]

Well, my offer stands.

 

[JC-jetro]

Well, my offer stands.

I would have jumped on your offer by now Jim. By the way, if the seat switch is complicated sensor where it sends Mili amp signal or change of resistance then I see that study of electrical layout is necessary. If the switch is indeed a simple momentary switch then it matters nothing what the rest of the control looks like. A simple test light or or an ohm meter easily will tell the nature of seat switch. Am I missing anything there?

JC,

 

[RobertN]

I only have a few minutes on my new to me TC40DA, but have already noticed that. Not so much wiggle, but when I lean a bit to one side or the other to look behind me ect.

but the tractor still shuts off everytime I even wiggle in the seat.

 

[jinman]

By the way, if the seat switch is complicated sensor where it sends Mili amp signal or change of resistance then I see that study of electrical layout is necessary. If the switch is indeed a simple momentary switch then it matters nothing what the rest of the control looks like.

JC, the seat switch used to be a simple single pole switch that made continuity in the circuit. The newer switches have 3 wires going to to them and I believe do more than just provide continuity in one circuit. I'm just not sure, but it has been discussed before that it is more difficult to bypass. Without a specific circuit diagram, I'm not going to give what may be wrong info to somebody. I do know that the switches are now inside the seat and are very hard to get to. Just removing the connector and jumpering pins in a plug without knowing what it should be is a sure invitation for a blown fuse.

It would be a simple thing to monitor the switch functions by penetrating the insulation on the wires and using a voltmeter, but it's hard to do that underneath a seat you are sitting on so you can apply 75 lb of force to make/break the contacts.

 

[JC-jetro]

JC, the seat switch used to be a simple single pole switch that made continuity in the circuit. The newer switches have 3 wires going to to them and I believe do more than just provide continuity in one circuit. I'm just not sure, but it has been discussed before that it is more difficult to bypass. Without a specific circuit diagram, I'm not going to give what may be wrong info to somebody. I do know that the switches are now inside the seat and are very hard to get to. Just removing the connector and jumpering pins in a plug without knowing what it should be is a sure invitation for a blown fuse.

It would be a simple thing to monitor the switch functions by penetrating the insulation on the wires and using a voltmeter, but it's hard to do that underneath a seat you are sitting on so you can apply 75 lb of force to make/break the contacts.

Hm, okay Jim, probably on the switch there is a common and N.O contact and a N.C contact each doing something. I have seen equipment that actually used 3 pole switches but in reality they used either N.O or N.C contact to satisfy their automation design and left the last contact not connected.
JC,


Ps. very interested to see the diagram as well.

 

[sld]

So on newer tractors you can't stand beside it or run in the barn to grab something and leave it idling? That would be a major pain in the butt.

 

[jinman]

So on newer tractors you can't stand beside it or run in the barn to grab something and leave it idling? That would be a major pain in the butt.

Yes, you can do that, but you have to have the parking brake set and the range lever in neutral.

For me, I wear a seat belt to keep me in the seat. If I, as an adult operator, want to stand up to see something better, it's up to me to ensure it is a safe situation and I can unbuckle my seat belt long enough to do that. I operate in many situations where I stand up on the operator's platform. Particulary, when I am using my forks to lift something and need a better view to slide the forks under the load.

In addition, if I am operating an HST tractor and fall off, my foot is lifted from the pedal and the tractor comes to a stop automatically. That doesn't happen if I have cruise engaged, but I don't use cruise unless I'm on a long flat area doing work in one continuous direction where I'd have my seatbelt fastened and no reason to stand up.

What I'm offering here is to give an adult information that they can use any way they see fit. I'm not doing the bypass. That's up to them based on their needs and skill level. I know some will disagree; they have every right to do that.

 

[dqdave1]

Jinman; Very well stated; I agree with you.

 

[Caliche]

I would consider a bypass switch that could be switched to use the seat switch for other users.

 

[RobertN]

I finally got some seat time on my TC40. Was picking up wood I cut a few weeks ago. On/off the tractor a lot. Although it was simple enough to set the brake and put the range in neutral, it got monotonous doing it dozens of times.

My previous Kubota did not have this "feature". It was made in '85 though; I do not think they had this on many tractors then.

It was easier on the old tractor... Switch must go

 

[nickel plate]

If I had that problem on my TC40 I too would first examine the existing switch and wiring, and if need be, then replace and if not at that point corrected, jump around the switch. Make it so that in all fairness and safety to the next owner, the bypass would be nullified so the new owner would have to re-address the seat switch problem. I say this because an engine constantly firing and dying cannot be a good thing on the complete tractor system. Bypass it and learn to live with it safely.

 

[arksdad]

I scanned the diagram for the seat switch wiring from the manual, but can't figure out how to post it. When you look at the actual switch it has 4 wires going into it, 2 white and 2 yellow.

 

[JC-jetro]

I scanned the diagram for the seat switch wiring from the manual, but can't figure out how to post it. When you look at the actual switch it has 4 wires going into it, 2 white and 2 yellow.

Did you scan it in to PDF or JPG (document or picture)?
You can upload the doc or image by simply scrolling down the page you're on and it has a manage attachment feature, click that and it opens up dialog box and you need to identify where the file reside (like on your desktop and anywhere else in your computer). Once you browsed the location and then click on the upload button, it'll take a few second depending your internet speed. once it is done uploading then click on exit and then submit reply as you normally do. I'm interested as well to see the diagram.

JC,

 

[arksdad]

Sorry, but it just doesn't seem to work. If you want, send me a private message with your email, and I'll try to send it to you that way.

 

[jinman]

PM sent....