TC40 glow plug issue

   / TC40 glow plug issue #1  

nyone

Veteran Member
Joined
Jan 31, 2012
Messages
2,428
Tractor
Ford 851
Just got this tractor with 3,000hrs. The glow plug indicator light is lit all the time unless I disconnect the timer control box under the dash. Does anyone have a wire diagram or any helpful info about how to repair this?

Turn signals and flashers also dont work. Although the lamps do light when I jump power into the relay sockets.
 
   / TC40 glow plug issue #2  
I hope theses will help with your issue.
 

Attachments

  • Elec Schematics.pdf
    1.7 MB · Views: 142
  • Glow Plugs.pdf
    770.3 KB · Views: 158
  • Turn Signals.pdf
    896.5 KB · Views: 171
   / TC40 glow plug issue #3  
My tc33 started doing the same thing a few years ago. I replaced the glow plug timer relay to fix the problem.
 
   / TC40 glow plug issue
  • Thread Starter
#4  
Thank you. I will check the schmetatics.
 
   / TC40 glow plug issue
  • Thread Starter
#5  
Thanks Thclimber I narrowed the issue down to the original NGK glow plug timer.
You dont have a digital copy of the service or owners manual do you?
 
   / TC40 glow plug issue #6  
I had to replace my glow plug timer last fall and, in my case, a similar (much cheaper) P/N that supposedly cross-referenced did not perform properly. I tried to go with that at first, but ended up buying the expensive dealer part and that worked out. That's just my experience. I described this in detail here:

 
   / TC40 glow plug issue #7  
When I did mine I think I used a Kubota relay I got off of eBay. Works perfectly and was much cheaper than the New Holland part from the dealer.
 

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