New New Holland

[James Mason]

Looking at the operators manual for Workmaster 50-60-70, the 50 hr. service only includes free play check for clutch and brake, check wheels and tires, and a hydraulic filter replacement. The engine oil and filter are at 300 hrs. The hydraulic fluid change is at 1200 hrs.
I'm going to haul it in anyway to have them look at the wiring under the seat.

 

[Gord Baker]

I feel your pain. Check Battery Ground, both ends of cable.

 

[James Mason]

I feel your pain. Check Battery Ground, both ends of cable.

Thanks Gord. It was the seat switch or/and related wiring. I got it to start and it is now at the dealer for a replacement.

 

[tractorblue]

I've had a NH TC35D for 21 yrs and experienced every conceivable no start scenario. About 5 yrs ago I bypassed all safety switches except the PTO safety switch. Even this can be finicky as there is a bolt adjustment underneath the left wheel fender (when sitting in seat). The bolt if not finely adjusted will not fully engage the PTO safety switch. I've found too long over-travels the plunger switch or too short does not engage plunger enough. This was my first thought for your issue.
Possibility#2 unscrew the starter solenoid to see if the plunger is slightly bent. You can also remove or add washers to see if that helps the plunger engages properly. If you have to buy another solenoid you can find on Amazon for third of the cost from NH dealer.

 

[FERLING]

Really? My Workmaster 25 service at 50 hours also requires hydraulic filter change. Per an earlier thread here, my inexperience with changing the filter meant the service also wound up requiring hydraulic fluid change, which was by far more expensive than the rest of the service. The dealer was kind enough not to laugh at me when I came back for the fluid. Or at least wait until I had left.

About the seat safety switch -- I had a lot of trouble with mine. It would keep killing the engine when I would change my posture in the seat. Craning my neck to see the bucket edges, leaning to check rear clearance, reaching forward to set the parking brake, whatever. I finally gave up and plugged in a jumper instead. Note, I will only start or move the tractor if I have the seat belt fastened, so I'm not doing anything dangerous here. It's just a much-too-touchy switch.

And I really mean that! I read a story somewhere, maybe here, in which somebody started their tractor in the barn or garage and it started moving forward when they didn't expect it to. And the folding ROPS, which wouldn't fit under the beams, had been put back up after parking it for some reason, so the ROPS contacted the beam. The tractor flipped itself in the barn. All it was supposed to do was start warming up. Well, I can't promise I won't do that, but I can promise I'll stay in the seat if I do.

They don’t make enough safety features to cover stupidity ( Example you lower a folding ROPS because its too high for entrance, then once inside you extend it back up). A little education goes a long ways and a lot of education about a piece of equipment may save your life.

 

[James Mason]

I've had a NH TC35D for 21 yrs and experienced every conceivable no start scenario. About 5 yrs ago I bypassed all safety switches except the PTO safety switch. Even this can be finicky as there is a bolt adjustment underneath the left wheel fender (when sitting in seat). The bolt if not finely adjusted will not fully engage the PTO safety switch. I've found too long over-travels the plunger switch or too short does not engage plunger enough. This was my first thought for your issue.
Possibility#2 unscrew the starter solenoid to see if the plunger is slightly bent. You can also remove or add washers to see if that helps the plunger engages properly. If you have to buy another solenoid you can find on Amazon for third of the cost from NH dealer.

TCs are really good tractors. My TC40 only had 1,000 hrs on it, but weather and exposure in FL got to the electrical system and I finally just gave up on it.

 

[tbarrick]

I go to the clutch and follow the pedal/shaft until I find the switch that is SUPPOSED to be activated. If you have done bushogging something could have damaged the detent that pushes the switch OR the switch or wiring has been damaged. Happened to me on my Kioti. Hold the key in start position and slam the clutch down and or jiggle the shifter lever.

 

[WCDennison]

I have a 12 year old (+-) NH TC45A and have a similar intermittent problem. With mine, I've learned to turn the key to start (and keep it turned) and stomp on the left side 'floor'. Doing that jiggles the wire for the safety switch for the clutch. So far, this has worked every time.

 

[James Mason]

I have a 12 year old (+-) NH TC45A and have a similar intermittent problem. With mine, I've learned to turn the key to start (and keep it turned) and stomp on the left side 'floor'. Doing that jiggles the wire for the safety switch for the clutch. So far, this has worked every time.

Amazing.

 

[jdmeth]

Best seat switch story ever. I worked at a produce packing plant as assistant plant manager. We got a lot of busted pallets and dirty cardboard and had a three sided concrete block burn structure on the far side of the parking lot to get rid of them. We had a tall, skinny black man named Bubba who always wore loose rubber boots. He worked in the back washing potatoes out of semi trailers and keeping the area clean. One Saturday morning we had come in to run a few loads and the main crew had left and just a few stayed up front to load out the last semi. Bubba was burning some pallets and I was in the maintenance room when I hear flop,flop,flop,flop,flop,flop and Bubba shouting "Mr. Dan, Mr. Dan, the Bobcat shut of in the fire pit and I can't start it! It was actually a brand new John Deere skid steer loader but all skid steer loaders are Bobcats to most people. He shouted he was grabbing a chain so I got the dump truck we used for culls and backed it up to the skid steer. The front tires were already smoking as he got the chain hooked to the truck and loader. I dragged it up to the unloading dock and he took the washout hose and cooled the tires down.

What had happened was he rammed some pallets into the fire and the impact knocked him off the seat, the loader was at an angle and his skinny butt wasn't enough to close the seat switch. Another few minutes and the loader would have been toast. The boss had gone home and no one was in the back to see us. We never told anyone.

That was twenty years ago, to bad there wasn't any security camera footage. Speed up some with Benny Hill chase music it would be a YouTube classic.