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Chipped Bull Gear

I

IHRedRules

Member
I was tearing down my M this weekend and found that the right hand bull gear had two teeth that were chipped pretty bad acrossed ~1/2 of the tooth. Can I take this to a machine shop and have it welded up or do I need to replace it? If i replace it, do I need to replace the gear in the differentail as well so they wear evenly?
 
You may be able to get some good used gears. You can try these places. Hal

Steelwheelranch- 1-785-548-7437

Burgh Implement- 1-800-369-6213

Rice Equipment- 1-814-227-9200
 
I see caseih's website lists two different bull gears part #'s. My tractor is serial # 41,xxx. Will the newer ones work?
 
get you a new gear , i wouldnt replace the pinion gear, these are slow speed gears and will out last you and me if bearings are kept tight i have welded on gear teeth before with a mig and filed them down to match ,just chipped teeth though on my pulling tractor ,new gear is very hard to find AC rc gears and that was 6 years ago and had 3 times horse power run through it and still holding up M gears are easy to find and as hard as it is to change should be replaced just for peice of mind
 
Here's a good one on ebay. It's from an MD but that doesn't make any difference.

I bought some transmission gears from this guy before and had no problems. In fact I think they were from the same MD.
Untitled URL Link
 
In looking at my M and MD parts catalog (unless I've missed something) the bull gears have part no. 51578DX for s/n's FBK 501 thru 149824, which includes your tractor s/n and for tractors FBK 149825 and up p/n 351790R11 was used. Both of these part numbers are noted as having 73 teeth. Hope this helps, Hal.
 
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