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Another update on my WD starter (pictures)

W

Will Herring

Well-known Member
Well I pulled the starter, put it on a chair and held it, and had a second set of hands jump a 12V battery to the starter to watch her spin. It did not seem like it went very far forward, but I did catch a picture of it at rest and at maximum travel, so let me know what you think:

iGYAzcy.jpg


I pulled the starter switch cover off too, and this is what the post looks like (I think I will be replacing the switch itself):

sDu9oCd.jpg


Oh, one more picture I took of it while spinning closer up.

815Io3w.jpg
 
If you jumped it with a battery that was charged, it should have kicked pretty hard in your hands when the jumper was touched. The extension looks fine to me. Jim
 
(quoted from post at 19:45:44 11/10/13) If you jumped it with a battery that was charged, it should have kicked pretty hard in your hands when the jumper was touched. The extension looks fine to me. Jim
Click to expand...

Interesting... It barely kicked at all.
 
(quoted from post at 19:58:29 11/10/13) If you used a fully charged battery and that's all you got Id say
the starter is shot.
Click to expand...

The last time I used it on the tractor it tried to start then it made a terrible noise and spun down. Then every time I have tried it since then, you can just hear it "spin" but not engage the flywheel. But the flywheel teeth are not missing where it is, so it should engage.

Any idea what in the starter may be "bad"?
 
Could be a number of things, brushes ect. You a starter
rebuilding shop around you where you can have it tested?
Maybe they can test it and rebuild it for you.
 
did you jump it with the old switch still on it?
Old switch contacts need cleaned or new switch
installed and maybe few drops of oil on starter
drive shaft. and does it have oiling ports for the
motor bushings put few drops in them also. Oil
ports are on the ends of the starter motor and
usually have little flip caps to keep dirt out.
Try that, Motor turns makes me think maybe not
getting enough amps. Bad starters don't turn. If
all else fails find a starter rebuilding shop in
your town and see if he will test it for starter
draw. Then he could also rebuild it for you if
needed.
 
I jumpered ground to the case and positive to the lug on the starter itself once I removed the switch assembly. And for the first few tries it just arced instead of spinning, even. Hard to get a good ground on the thing as dirty as it is.

I am told there are just two hex screws to take the nose cone off, so I will tear into her later this week and report back. And see if I can find anywhere locally that may work on these.
 
According to your first picture the teeth are wore about half way. It looks like your bendix gear is coming out that far which is fine. What exactly is the problem you are having with your starter?
 
Before you do anything with the starter any farther. Check the ring gear on the flywheel. I have see them come loose and spin on the flywheel. Stick a heavy screwdriver in the starter hole and one or two teeth at a time turn the gear and see if it slips on the flywheel.. Then try it in the other direction.

A starter that spins and doesn't engage makes a completely different noise than one with bad teeth or a slipping ring gear.

You didn't say what voltage battery you tested your starter with. If it's a 12 volt starter and you use a 6 volt battery it's not going to rip it out of your hands. If you use cheap battery jumper cables it won't rip it out of your hand. Jumper cables never make as good as a connection as the battery cable on the vehicle. Just my 2 cents from experience.

You should be able to take your starter to your local parts store and they can test it for you.
 
It's the original starter to the tractor (6 volt?) as far as I know, but it has a 12 volt system with an alternator on it so I used a 12 volt battery. It did not jump, as it were.

Okay, so I thought when I looked through the starter hole in the tractor that that actually was the flywheel. What's the difference when looking in between the ring gear and the flywheel? Anybody have a picture of what it should look like? Here's what it looks like when I took a picture of inside the housing (I assume the thing closest to me with the teeth on it is the ring gear, and the flywheel is the thing further beyond it?):

nAzh8bn.jpg
 
(quoted from post at 20:33:41 11/10/13) It's the original starter to the tractor (6 volt?) as far as I know, but it has a 12 volt system with an alternator on it so I used a 12 volt battery. It did not jump, as it were.

Okay, so I thought when I looked through the starter hole in the tractor that that actually was the flywheel. What's the difference when looking in between the ring gear and the flywheel? Anybody have a picture of what it should look like? Here's what it looks like when I took a picture of inside the housing (I assume the thing closest to me with the teeth on it is the ring gear, and the flywheel is the thing further beyond it?):

nAzh8bn.jpg
Click to expand...

Really hard to tell from here but it looks like what is left of the teeth on your ring gear are out of reach of your starter gear when it is extended.
 

Will, in response to your question about what should the ring gear look like, as the name implies, it forms a ring around the outer edge of the flywheel. The front edge of the teeth should be essentially perpendicular to the tops of the teeth, the same as on the back side. If they are worn back too far the starter gear can't engage them.
 
It is easy to check to see if the drive is moving far enough. Simply turn it on the armature by hand. The gear should come nearly against the stop. It looks like yours is only moving about half way.
 
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