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Machine Shop and Tool Talk

Gear and Shaft Needing Repair


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  #1  
Old 01-25-2010, 06:23:50 PM
1938Sears 1938Sears is offline
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Default Gear and Shaft Needing Repair

I have a gear that is off of a Red-E riding garden tractor as shown in the photo. It is a cast gear with a spline broach in the middle. It is the drop reduction gear that drives the rear end of the tractor. Some of the teeth or broke off as shown and it appears others have wore more than some. I need a lead on someone who could repair this at somewhat of a reasonalbe dollar amount. There is also a shaft that is 5/8" in diameter that comes off of the transmission and has a gear on a key-way that drives the above described gear that I also need repaired. I have photos I can send of more detail of the whole assembley, but just need an idea of a source for repair.
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  #2  
Old 01-25-2010, 08:24:36 PM
J.B. Castagnos J.B. Castagnos is offline
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Default Re: Gear and Shaft Needing Repair

Will it be in severe service? If it's just for show you could drill and tap a series of screws across the broken area, braze over them and file a profile that fits. This actually makes a good repair. Take it to a supplier like Motion industries, see if they have a gear that matches the OD, it can be machined and installed as a ring gear or buhinged to work.
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Old 01-26-2010, 12:45:18 PM
ronm ronm is offline
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Default Re: Gear and Shaft Needing Repair

About 20 years ago, I had both final drive gears on my tractor w/teeth broken off. I hauled them around to several machine shops & nobody wanted to mess with them. finally showed them to a welder that was working for my BIL, & he volunteered to weld the teeth up w/a MIG. He welded them oversize, & I made a template of the profile from the good teeth. Took after them w/a die grinder, used the pinion as a gauge, rolling it over the tooth until there was no bump, & marking w/magic marker to get the pattern right. It was actually easier than it sounds, & they are still running-I plowed snow with it the other day...
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Old 01-26-2010, 01:23:18 PM
aametalmaster aametalmaster is offline
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Cool Re: Gear and Shaft Needing Repair

Now the trick is out ron. When i was a Millwright in the big factory i had to fix gears all the time. Make a template from the good area and weld up the bad and grind to suit...Bob
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Old 01-26-2010, 07:43:32 PM
1938Sears 1938Sears is offline
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Smile Re: Gear and Shaft Needing Repair

Thanks Bob, I sent some more photos for you to take a look at.
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Old 01-27-2010, 01:05:21 AM
ronm ronm is offline
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Default Re: Gear and Shaft Needing Repair

Quote:
Originally Posted by aametalmaster View Post
Now the trick is out ron. When i was a Millwright in the big factory i had to fix gears all the time. Make a template from the good area and weld up the bad and grind to suit...Bob
Hope I didn't blow your "secret weapon"...hopefully he'll ship it to you to fix?
It was pretty satisfying to fix them myself when the shops wouldn't touch them, they weren't available from JD, probably wouldn't have liked the price if they were....
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