TC40 glow plug issue

[nyone]

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.

 

[thclimer]

I hope theses will help with your issue.

 

[Hughman]

My tc33 started doing the same thing a few years ago. I replaced the glow plug timer relay to fix the problem.

 

[nyone]

Thank you. I will check the schmetatics.

 

[nyone]

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?

 

[tmeric7]

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:

TC29: how I added glow plug button and sorted out timer relay

My TC29DA has cranked longer to start with the cold, plus some erratic behavior at the glow plug light. This post is to share how I worked though things. I replaced the glow plugs in the process. For documentation, my New Holland P/N is SBA185366190. I paid $30 for eBay replacements and...

www.tractorbynet.com

 

[Hughman]

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.

 

[dieselscout80]

Got a part number?

 

[tmeric7]

Got a part number?

It's in the link I posted above.

 

[Hughman]

Got a part number?

Not for the one I got. That was years ago and I am nowhere near the tractor at the moment.