No pics or video. Changed phones and I’m not versed in this ones media quirks.
It’s pretty straightforward. The bendix extends to the full extent of its travel and just spins in space with out engaging the flywheel at all.
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Starter engagement issues
- Thread starter exSW
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It’s pretty straightforward. The bendix extends to the full extent of its travel and just spins in space with out engaging the flywheel at all.
Judge Judy says; " No picture; it doesn't exist, no video; it didn't happen"
mgonitzke
Well-known member
If the bendix is spinning in space without engaging the flywheel, it is not extending to the full extent of its travel.
When the bendix gear is parallel to the flywheel it’s fully extended.
mgonitzke
Well-known member
The plane of rotation of the bendix gear is always parallel to the plane of rotation of the flywheel. I assume what you meant is that the bendix gear is in the same plane as the ring gear when the starter is engaged. Now, before you said:
Now you are contradicting yourself, and I (and probably others trying to help you) are at a loss as to what is going on. Are you sure the bendix gear is actually still rotating when it is fully engaged but does not turn the engine, or is the starter armature spinning inside of the bendix?
If the starter is correct, it is bolted securely in place, the bendix fully extends when the starter is engaged, and bendix continues to rotate with the shaft, what you are describing is physically impossible unless the bendix gear/shaft worm is worn to the point that it slips over, or the spacer between the return spring and gear is missing, which may cause the bendix to come off the end of the worm and slip over. These both seem unlikely given that you have had this happen to several (new) starters. By the design of the gear, it cannot overextend such that the teeth are no longer engaged.
Figure out how to post a picture, or nobody here is going to be able to help you solve this issue.
mgonitzke
Well-known member
No, you're under-describing it. "Slop" is a very general term. I'll ask again, is the bendix gear still rotating with the armature shaft when this happens, or is the bendix gear being held from rotating by the flywheel while the starter motor is turning?
You have yet to describe this "problem" in a way that makes it clear what the problem actually is.
You have yet to describe this "problem" in a way that makes it clear what the problem actually is.
Nothing like that. As stated previously the bendix extends and turns. It just has excessive clearance at the flywheel which prevents it from engaging.
It spins parallel to the flywheel teeth without catching.
It’s as if the flywheel were undersized.
Except it’s not.
The bendix will engage and start the tractor when cold.
Are you 100% sure you have the right number of teeth on the pinion? From searching it looks like the 9 tooth is the common size but I did find a 10 tooth version. How well do the teeth mesh when it's cold? It may be that it just catches when cold and something moves a little bit when hot and won't catch.
The contact pattern on the drive teeth is perfect.
mgwin
Well-known member
I guess the phrase "a picture is worth a thousand words" would definitely apply here! LOL 
If a picture is worth a thousand words, wonder how much a video would be worth?
If a picture is worth a thousand words, wonder how much a video would be worth?
mfrade
Well-known member
Yes, when it actually drives the engine over! I think the bendix actually works partially. The internal clutch probably slips when warm/hot. IF as you say... it extends perfectly fine every time... ( Which I REALLY DOUBT) the history with these says otherwise. That's just my opinion.. now I'm out of here.
Your right it really is! This reminds of a guy years ago that went on for 4 days asking why his tractor wouldn't start, but wouldn't give any straight answers to the 30 guys that tried to help him.Futile effort
And then he went away, never to be heard from again after he put a new battery in?Your right it really is! This reminds of a guy years ago that went on for 4 days asking why his tractor wouldn't start, but wouldn't give any straight answers to the 30 guys that tried to help him.
My original post highlighted and a edited for brevity. I didn’t ask for fix or a diagnosis. I asked if anyone else had seen this issue with Cub starters.
mgwin
Well-known member
Can you take any pictures of the starter when trying to start cold, and then when trying to start hot?
As I stated earlier, pictures help tremendously.
As I stated earlier, pictures help tremendously.
JPrattico
Well-known member
Does that make some sort of grinding noise when you put power to the starter? If there's that much slop in the gear then I would think that something would have to apply a light force to push the gear away from the ring gear on the flywheel. Thus, a grinding noise would indicate that the starter gear is slightly contacting the ring gear, and the ring gear is pushing the starter gear away from it preventing proper mesh of the gears.
I have certainly never seen this sort of issue with a starter before, worst I've had was a little pin break off the top of one, causing the gear to fly off the starter. Interesting part was that this was at a show. Managed to start the tractor once with a piece of paper clip acting as that pin, then searched the show's flea market and bought a replacement starter. Much better design (a roll pin and not a tiny flimsy clip) and still works on the machine to this day.
I'm very curious about what would cause this strange situation to arise.
I have certainly never seen this sort of issue with a starter before, worst I've had was a little pin break off the top of one, causing the gear to fly off the starter. Interesting part was that this was at a show. Managed to start the tractor once with a piece of paper clip acting as that pin, then searched the show's flea market and bought a replacement starter. Much better design (a roll pin and not a tiny flimsy clip) and still works on the machine to this day.
I'm very curious about what would cause this strange situation to arise.
JPrattico
Well-known member
Does that make some sort of grinding noise when you put power to the starter? If there's that much slop in the gear then I would think that something would have to apply a light force to push the gear away from the ring gear on the flywheel. Thus, a grinding noise would indicate that the starter gear is slightly contacting the ring gear, and the ring gear is pushing the starter gear away from it preventing proper mesh of the gears.
I have certainly never seen this sort of issue with a starter before, worst I've had was a little pin break off the top of one, causing the gear to fly off the starter. Interesting part was that this was at a show. Managed to start the tractor once with a piece of paper clip acting as that pin, then searched the show's flea market and bought a replacement starter. Much better design (a roll pin and not a tiny flimsy clip) and still works on the machine to this day.
I'm very curious about what would cause this strange situation to arise.
I have certainly never seen this sort of issue with a starter before, worst I've had was a little pin break off the top of one, causing the gear to fly off the starter. Interesting part was that this was at a show. Managed to start the tractor once with a piece of paper clip acting as that pin, then searched the show's flea market and bought a replacement starter. Much better design (a roll pin and not a tiny flimsy clip) and still works on the machine to this day.
I'm very curious about what would cause this strange situation to arise.
