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International 686 starter question

A

Anonymous-0

Well-known Member
Suddenly had no cranking. Could hear starter spin but no crank. Found gear on starter was broken. Had that repaired at starter shop. Put starter back on and no crank. Took starter out and tried it and it appears to work fine. Ring gear looks good. What are we missing??
 
I will second "Bob's" post. Wrong starter drive. They are just an over running clutch so that when the engine starts it does not explode the starter. If they put the one for a front mounted starter on your IH one the overrunning clutch would not drive the flywheel. It would be free wheeling.

Crab the starter drive gear with a pair of pliers. You can see what way it drives that way.

A trick to see how the starter drive is engaging is to paint the starter drive gear. Install it and crank the engine or attempt to crank the engine. LOL Remove the starter and look at the painted gear. If the drive gear engages the ring gear you can see how it mated in the paint on the starter drive gear. Heck while you have the paint can handy paint the ring gear. You can tell then how the starter drive is engaging it too.

If it is the correct one and still not crank but you are sure it is engaging the ring gear, it has to be the ring gear is broken. I have seen them crack and run free on the flywheel. That is easy to check with the starter off. Just take a pry bar and try to turn the motor over through the starter hole by turning the ring gear.
 
(quoted from post at 13:37:01 07/24/13) I think it is on a helix & the wrong one won't fit.
Click to expand...

You are correct. They use a CCW drive. A CW drive will not go on the armature.

Starters of those series tractors used drives of different diameters. Depending on the flywheel and ring gear set up it they used either a 43 mm OD or a 30 mm OD gear. I checked on that starter for which drive it used and it uses the smaller 30mm OD gear. If it had the wrong size drive on it you should hear it grind against the ring gear.
 
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