Starter problems still going on

[Mike(NEOhio)]

I posted a week or so back about the starter not engaging. Took it off and found one brush holder had a missing rivet, repaired that but still had the engaging problem. I seems to work well in a bench test. Tried it on the tractor with the pole shoe cover off. It snaps in and the starter spins but the pinion doesn't engage and it just growls. I thought maybe it's the flywheel teeth, they show some wear, so today I got in there with the Dremel and put the lead angle on all the teeth. Starter back on and it still will not crank, only growls. My question is how would I know if I should replace the whole starter or just the Bendix? Pictures of teeth before and after.

 

[bob p mn]

I would replace the Bendix if the starter is spinning fine on the bench. The 3000 starter I referred to in your previous post spun fine on the bench the drive came out like should have but the drive was stripped out inside and wouldn't turn the motor over at all. Installed the new drive from my rebuilder and everything is fine.

 

[nashranch]

Sounds like a starter problem to me... I do have a pretty good Lucas starter here For Sale if interested. It runs good when hooked up to a battery

 

[Mike(NEOhio)]

I would replace the Bendix if the starter is spinning fine on the bench. The 3000 starter I referred to in your previous post spun fine on the bench the drive came out like should have but the drive was stripped out inside and wouldn't turn the motor over at all. Installed the new drive from my rebuilder and everything is fine.

It makes a lot of noise which I thought was the pinion spinning against the flywheel teeth. Could that be the Bendix slipping? When I turn it by hand it runs free in one direction and grabs in the other like it should. Tomorrow I'll test it with the pinion locked and see if that's the noise.

 

[shaun wallace]

He has a gas unit witch uses different starter than diesel.

 

[Eman85]

Do yourself and your tractor a favor and ask around for a local starter alternator shop. Have them look at it and fix it.

 

[Michaels Dad]

Don't know if this pertains to your problem, but it's something that happened to me.
Replaced the starter and bendix. Ran it for several years until one day bendix wouldn't engage. Split the tractor and this is what I found.
The replacement starter/bendix and specifically the bendix were incorrect. The length of the teeth on it were to short thus leading to the teeth on the flywheel being chewed off.
Pics show what the engagement looked like, difference in tooth length and damage to the flywheel.

 

[Destroked 450]

Smear some heavy grease over the teeth on the flywheel, just the ones visible through the starter hole, no need the coat them all
Install the starter and try cranking the engine a few times, remove the starter and check to see if the starter gear engaged the flywheel ring and how deep, there should be grease on the bendix gear teeth to indicate the depth of engagement
If it shows good gear engagement replace the bendix

 

[Mike(NEOhio)]

Ordered a new Bendix this morning. It was missing most times turning it by hand. I cut the old one apart, never really knew what's inside them. Rollers and springs. Springs were all collapsed. All along it was engaging, just not turning the flywheel. Never too old to learn.

 

[Michaels Dad]

Make sure the length of the teeth are the same length as the old one. Yes it can happen, just look at my first pic.