New Holland TC40 odd problems

20447 Views 4 Replies 3 Participants Last post by H-D, Oct 6, 2010

pastureman

Discussion Starter · Sep 7, 2010

I have a TC40 that is starting to act up. If I am running it for a while and then shut it off, it wont restart unless I push the seat kill switch a few times. Sometimes it starts to die out after I do this. Also, the glow plug light kicks on sometimes now. It seems to be effected by the forward/reverse lever. Anyone have any ideas? Ken

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deerecase

· #2 · Oct 4, 2010

Interesting. I've got the Case version of this tractor, a DX-40. I've also ran into a few problems similar to yours.

Here's what mine did. I would brushhog for awhile and then stop and shutoff tractor. Get back on and be in a no crank situation. All dash lights on, but no crank. Check everything, all looks good to go. Then, for no real reason, it would start. I talked to a Case service manager about the problem. He suggested to not baby it disengaging the PTO. I was certainly guilty of it, I engage at low rpm after lowering the mower, and sliiiiide it out to disengage. Now, I make an aggressive movement to disengage. Haven't had the no crank situation since.

Glow plug light.
This one still has me bumfuzzled. I've always let the heater cycle before starting. I hear the audible click when it shuts off and the light goes out, but occasionally it will light the bulb on the dash after starting. I dont have to be moving (forward/reverse lever) to create the problem. I'm starting to lean towards a short somewhere causing the light to come on. Mine is a hydro-stat by the way.

Maybe related, is the problem with headlights. I'm on my 3rd fuse now for lights. Never a problem for the first year or so but now its started this.

I really like this little tractor so i'm living with some of the problems, just a little annoying.

I have also ran into a CRANK/NO START condition. If you run into that, hollar and maybe i can steer you towards a solution.

I'd like to see some techs chime in on these problems. Maybe we can work towards a solution.

Thanks

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H-D

· #3 · Oct 5, 2010

I have learned from experience that when things get absolutely weird (especially with multiple circuit involvement) to start searching the ground side of the circuits. It will throw you a curve, because we're all so used to hunting on the 'hot' side. I'd recommend checking for voltage drops at every connection on the ground path to the affected circuits. GM said that any more than .2 volt drop across a connection was unacceptable. When doing electrical work, it helps if you're already insane!

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deerecase

· #4 · Oct 6, 2010

H-D said:
I have learned from experience that when things get absolutely weird (especially with multiple circuit involvement) to start searching the ground side of the circuits. It will throw you a curve, because we're all so used to hunting on the 'hot' side. I'd recommend checking for voltage drops at every connection on the ground path to the affected circuits. GM said that any more than .2 volt drop across a connection was unacceptable. When doing electrical work, it helps if you're already insane!

Happened again yesterday after mowing. Shut the tractor off for a moment to have a quick conversation with wife and it wouldn't crank. It finally started after fiddling around for a couple of minutes. I'll definitely start checking grounds. That makes a lot of sense. Thanks for the advice.

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H-D

· #5 · Oct 6, 2010

Another thought, the neutral safety switch on the aged parent's TC-29 (manual with three range secondary) quit in the position between range 2 & range 3. We just dropped back to using the neutral between range 1 & range 2, but expect to have to replace the entire switch eventually. You might try moving the fore-aft control through the neutral position while holding the key in 'Start'. The glow-plug problem might be metallic debris loose in the key switch, or a glow plug relay issue (more likely), but a bad ground is still in the running. I'd for sure buttonhole the New Holland techs to see if there is a technical service bulletin out regarding these conditions.

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