JD 450C will not start after normal operation and normal shutdown

[Tx Jim]

Possibly a faulty key switch. Not powering start button every time.

TxJim are there any circuit breakers that could be intermittently failing?

MY knowledge of JD ind equip is very limited as dealer I worked for was AG only. I can't think of a circuit breaker on start circuit on JD utility tractors but then I'm getting "Oldtimers disease"!!!!!!!

 

[Zebrafive]

MY knowledge of JD ind equip is very limited as dealer I worked for was AG only. I can't think of a circuit breaker on start circuit on JD utility tractors but then I'm getting "Oldtimers disease"!!!!!!!

Reason I mentioned CB is a logger with a JD log skidder had a no start issue. He bypassed something on the right side of the engine compartment that looked like a CB. Sold a few trees this spring.

 

[AKERDoc]

Were you ever able to get your JD 450C working again? I am having the same problem.

 

[beenthere]

AKERDoc
Give the OP a PM (personal message) to touch base with him. Click his user name and there you will see that feature. Has been awhile since being active.

Hope others will chime in here as well. Any more info you can add to your problem to liven up the interest on TBN? history, when last working well, etc.

Welcome to TBN

 

[Tx Jim]

Welcome to TBN
Have you checked/cleaned all battery cable connections? If ground cables are attached to sheet metal I suggest to relocate ground cables to engine block for more cranking capacity. Have you load tested batteries?

 

[AKERDoc]

AKERDoc
Give the OP a PM (personal message) to touch base with him. Click his user name and there you will see that feature. Has been awhile since being active.

Hope others will chime in here as well. Any more info you can add to your problem to liven up the interest on TBN? history, when last working well, etc.

Welcome to TBN

Good Morning and greetings from Alaska (a nice and balmy 0 here on our mountain this morning).

As a retired ER Doc, I am not much of a mechanic. I live on the side of a mountain at about 1600 feet so we get a fair amount of snow and I have 3/4 mile of driveway to plow. I don't use it a great deal. A few times a winter, I run out of room to push the snow off the side of the road, and get to have fun on my 450C pushing the snow to widen the road so I can continue plowing. We also heat with wood, and I use the cat to pull trees out of the woods. I also use it 2-3 times a summer to grade the road to remove pot holes. I bought the cat back in 1982 when we were building our home. It really is fun to use.

In all these years, I never have had any problem starting it as long as I plug it in for a couple of hours to warm it up. I went to start it a couple of weeks ago and it wouldn't crank over at all. When I switched on the key, the gages would flicker, but nothing at all happened when I pressed the start button. I always put a charger on the battery when I plug in the cat to warm it up so I figured that the battery was fully charged, but just in case, I tried a different battery. That didn't help. Two days later, I gave it another try, and this time I wiggled the shift lever back and forth to make sure it was in neutral and then tried starting again. After pushing the start button a couple of times, it fired right up with no problems. I turned the cat off, and then had to wiggle the shift lever again a couple of times and it started right up again. This makes me think that the problem is either in the Starter Push Button or the Neurtral Safety Switch.

How difficult is it to replace the Neutral Safety Switch, and where it is located?

Thank you so much for any help and advice.

 

[AKERDoc]

Welcome to TBN
Have you checked/cleaned all battery cable connections? If ground cables are attached to sheet metal I suggest to relocate ground cables to engine block for more cranking capacity. Have you load tested batteries?

I cleaned the battery terminals and reconnected them. The negative cable is connected to the metal of the battery box which is located just to the right of the shift levers.

 

[Tx Jim]

NS switch is key 14. I've witnessed removing 1 or more shim washers(key 15) & reinstalling original switch has solved non start condition.

 

[AKERDoc]

NS switch is key 14. I've witnessed removing 1 or more shim washers(key 15) & reinstalling original switch has solved non start condition.

Thank you for the information. Where is this located? Where does the shift lever connect with that chain of parts? How do you get to the Neutral Safety Switch?

 

[beenthere]

AkerDoc
Poke around at the jd parts site and see if you can match up with TX Jim 's thumbnail..

https://partscatalog.deere.com/jdrc/sidebyside/equipment/73571/referrer/navigation/pgId/170974

Hope this link helps you out.