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Pinion gear on starter bendix

C

chas036

Member
Is the pinion gear in the starter bendix suppose to move backwards easily and freely so as to mesh with the ring gear on the flywheel when the starter is engaged and the teeth don't match up exactly??

I think I might have found the problem why my JD=A starter is grinding and not engaging. I saw that when the teeth on the pinion hit the teeth on the ring gear on my A, the pinion gear doesn't move backwards so the teeth will mesh. I can push on the lever and push on the lever and the pinion will move backwards. If I push on the lever to hard, the starter engages with the teeth not meshed and the pinion gear will just grind on the ring gear.

Now if I push the pinion it with my hand, it will move backwards but it takes some effort to move it, it does not move freely, it feel very tight.

Is the pinion gear suppose to move freely, or should be tight like that?
 
The gear should slide freely on the spline of the shaft.

As the drive gear moves toward the flywheel gear, the slight spiral of the spline aligns the gear with the teeth, then the spring snaps the drive into the flywheel gear BEFORE the contacts close and the motor spins.

If this is a freshly rebuilt starter, I would take it back before making any changes or taking it apart.
 
The pinion slides on the shaft without a problem. the problem I have is that the pinion gear will not turn backwards freely so whnm it pushes against the ring gear, it will not turn backwards to let it mesh with the ring gear.
 
you sure the starter drive has the right number of teeth would not be the first time someone got the wrong starter
 
(quoted from post at 02:38:22 07/26/19) you sure the starter drive has the right number of teeth would not be the first time someone got the wrong starter
Click to expand...

The starter drive is the original that came with the tractor, so I assume it is correct. It has been working fine for years until recently.
 
Sounds like the drive is not the correct direction for the tractor. And yes the gear should turn one way rather tough and easier the reverse direction. The easier is for the disconnect from the flywheel when the engine starts.
 
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