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.