tc 30 glow plug

   / tc 30 glow plug #1  

bene0239

New member
Joined
Jun 18, 2022
Messages
4
Tractor
new holland tc30
Could it be possible that my NH tc-30 does not have a glow plug timer? I can not find it anywhere.

Also, what controls the flow to the plugs
 
   / tc 30 glow plug #2  
Track down a schematic of your tractor to see how it's wired. I don't know if your tractor has a timer. Some do, some don't. Either way glow plugs are generally energized by turning the ignition key to the left. It's a spring loaded position so when released it will snap back to the off position. Energize the glow plugs for the proper amount of time (usually five to fifteen seconds) then attempt to start.
 
   / tc 30 glow plug
  • Thread Starter
#3  
My repair manual says it does, but I can not find it. I have constant power going to the plugs, even when I unplug my ignition. I even have power at the ignition wire.
 
   / tc 30 glow plug #4  
I'd track down the problem. Your glow plugs should not have constant power and may have burned out by now. Try to track down a parts breakdown of that tractor.
 
   / tc 30 glow plug #5  
Last edited:
   / tc 30 glow plug #6  
IMG_7596.jpg
 
   / tc 30 glow plug #8  
Thanks for the diagram, that doesn't cover the tc-30 though. The 30 was a basic model which is what I wanted to avoid all the electronics.

Ah ok I didn’t realize there was a difference.
 
   / tc 30 glow plug #9  
@bene0239 - As Roadworthy said... definitely look for the issue. Your TC's Glow Plugs should never have constant power & if they do there is a real problem & as mentioned may already be burn-up.

As far as the Glow Plug Timer goes (I believe but don't hold me to it) on the TC30's it depends on serial # of the machine. I think it is located on the firewall... see attached pic.


TC30 Relay & Fuse Diagram.gif

It should be #8 in the diagram NH part # SBA385870301 (for reference... make sure you confirm)
 

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