help! moving day and tractor died

[DocHeb]

Transmission Range Safety Switch.

 

[DocHeb]

Boomer Safety Start Circuit Troubleshooting

 

[Scratchnbell]

Wow Docheb Those are great!!!!
Do you have the manual in pdf or did you have it in paper? I'd like to get a copy of one.
Hopefully this will allow me to find the problem.

The plug that is not attached is wrapped around the wires in the brake switch. So it is in the same area. It has two wires going into it. I can't find any where were it might plug into.


again if I plug the fuel solenoid to the battery and jump the starter I can start the tractor and do.
Thanks everyone for the input!
Bob

 

[DocHeb]

I scanned those pages from an old-fashioned paper manual. I think the manual is available in .pdf, and I believe Messicks.com has New Holland parts diagrams that might prove helpful.

 

[cardenharry]

My DX33 has two wires underneath the tractor in the area you are referring to. In my case once a bush, weed or some such pulled the connection loose and it causes the system to think the PTO is turned on and it will not start. I finally found it and got it plugged back together.

 

[DocHeb]

Rear (Main) PTO Safety Switch.

 

[DocHeb]

Mid PTO Safety Switch.

 

[jinman]

I opened the fuse panel and second fuse on the passenger side was blown. I replaced this fuse but still nothing. I turned the key on and it didnt blow again.

Does anyone know where the nuetral safety switch is on the TC40DA?
Also I have a two prong plug hanging loose under the driver side foot board. I cannot find where it plugs into.
I'm about ready to call someone.
Bob

Just in case you have not picked up on it, if you turn on the key and the PTO engaged light illuminates on the dash, but the PTO is not engaged, that is a sure sign that fuse #2 is blown.

There are two switches that will keep the starter from operating. One is the PTO engaged switch and the other is the neutral safety switch as you noted. The neutral safety switch is on the left side of the transmission housing. It has two connectors (bullet style connectors) that are plugged into it. It is not a single plug with multiple contacts on my tractor. It may have been changed on yours, but mine are individual connectors that can be removed one at a time. The switch is screwed into the transmission casing and is operated from inside the transmission. It is not an external switch like the parking brake, and PTO switches DocHeb posted. However, the PTO switch is an exposed switch that you can see easiest by looking from behind the tractor. Look up between the left-rear tire, above the axle, near the bottom of the operator's platform and you can see the switch. Having someone move the PTO lever while you look is a big help if spotting the switch. It may have some trash around it, but mine has never had so much trash that it caused a problem.

BTW: There is no "fuel pump" on your tractor. If you jumped power to something on the injector pump, I'd bet it was the fuel shutoff solenoid. That solenoid must be energized to allow fuel into the injector pump. When you turn the key off or stand up off the seat without having the parking brake set, that solenoid de-energizes to kill the engine. If it is the problem, the starter will turn the engine over, but it won't crank. That's how you can tell if you have a problem with the parking brake switch or the seat safety switch as opposed to the PTO and neutral sensing switches.

EDIT: I'm attaching a picture from the parts manual that shows the neutral safety switch (Item 29). Item 33 is the range selector arm where it goes into the transmission. The switch is just above it. Again, if you can have someone move the range selector while you look up under the platform, it will be easy to spot.

...and if you don't have a mid-pto, the connector you see hanging underneath your tractor could just be unused. It may not hook to anything.

 

[Scratchnbell]

JIm,
Im curious, Is the mid PTO an option? It is not on all Boomers?

The PTO light is not on when I turn the key. The engine doesn't turn over at all. So I'm assuming it is the neutral safety switch. I have seen the two bullet style conectors that you are referring to. I think I'll check the switch for continuity.
Can I do a simple by pass on it to check if that is the problem??


Docheb, Thanks for the all the good diagrams and pages. Hopefully that will allow me to find the issue. PERhaps I can just adjust the swtch and wont have to replace it.

We keep going from snow to rain today so I will try and get under it during the snow phase.
Merry Christmas!!!
Bob

 

[Scratchnbell]

The neutral safety switch checks out ok. The PTO light does not come on but both of the PTO RPM lights come one then go off. Is this normal??
Something else that I noticed, The PTO lights on the dash dont change weather or not I have the PTO lever engaged.

Bob