Starter Ford Industrial 4000

phamus

New User
I have had this tractor for 30 years and have purchased or rebuilt the starter at least 15 times. It doesn't get that much use maybe once a week. I switched it to 12 volts a few years ago and the starter actually lasted longer.I also got a much larger battery with some cranking power. 800 plus I'm buying another starter this week is this standard for this model of tractor?
 
No, that sounds excessive.

What is failing about the starters?

Running a 6v starter on a large capacity 12v battery is hard on the starter and flywheel gear. Some models can handle it with no problems, others can't. A low cranking amp battery with small cables can calm it down some, but still it will hit pretty hard.

If the flywheel gear is worn or has missing teeth it will wear out or break the starter drive/nose cone quickly.

Fast ignition timing is hard on starters.

New aftermarket starters are generally lower quality than rebuilt original. Sometimes a starter shop can rebuild an original one with 12v field windings. That would be the best solution, but still everything else needs to be right to get max life out of it.
 
(quoted from post at 13:34:25 10/29/18) No, that sounds excessive.

What is failing about the starters?

Running a 6v starter on a large capacity 12v battery is hard on the starter and flywheel gear. Some models can handle it with no problems, others can't. A low cranking amp battery with small cables can calm it down some, but still it will hit pretty hard.

If the flywheel gear is worn or has missing teeth it will wear out or break the starter drive/nose cone quickly.

Fast ignition timing is hard on starters.

New aftermarket starters are generally lower quality than rebuilt original. Sometimes a starter shop can rebuild an original one with 12v field windings. That would be the best solution, but still everything else needs to be right to get max life out of it.
akes sense but it burned them out when it was a 6 volt system too and I was forever jump starting it in cold weather, battery just couldn't crank long enough. It's a hard starter.I'll ask my starter guy what burns out on them.
 
If it takes excessive cranking, something is wrong.

That would be a good place to start, look into why it is a hard starter.

Typically the choke is not fully closing, or a weak spark while cranking.
 
(quoted from post at 12:52:15 10/30/18) If it takes excessive cranking, something is wrong.

That would be a good place to start, look into why it is a hard starter.

Typically the choke is not fully closing, or a weak spark while cranking.
I just tuned it up new plugs and points, I will check the choke.
the last starter the heaters were completely worn down. My starter guy said it shouldn't have been rebuilt the copper contacter collar was worn to far down. Funny he rebuilt it or it was purchased new from Ford.
 

I recently got the 6 volt starter to my 960 rebuilt after probably 18 years at 12 volts. It starts in less than a second.
 
How long do you have to crank it until it starts? A well tuned gas engine with an operating choke should start within five seconds unless the temp is below zero.
 

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