Question about missing transmission teath

[dnormand25]

I'm rebuilding my 1010 crawler and have consulted this group for information fairly regularly. One thing about dissisembing a machine to the ground is the discovery of every broken, abused and poorly repaired part and heres my latest issue. I have noticed two missing gear teeth on seperate gears in the drive chain. I have read about people building teeth by welding then filing to shape. I have also read of individuals ignoring the problem completely or using jb weld to rebuild gears (although not in a transmission). What are your opinions on the best fix for this? is this the sort of issue that requires the abort of a rebuild if a total gear replacement isn't availible.
I posted a request for a shift fork a couple of weeks ago. I think what happened was the shift fork broke and possibly caused the teeth to break. I found two fairly large chunks of the teeth in side the housing, but no noticible part related to the shift fork leading edge.

Thanks for all the knowledge and enjoyable reading

David in Ms

[hunter41mag]

David,

If replacement gears are available than I would replace them. Repaired teeth on a gear are not as strong as the original. Also if they are not the right shape or in the correct location they will not last long. So if available than do it right and than you will not have to worry about it or tear it apart a second time.

Don
Eastern PA
440IC

[JimAnderson]

David,
I agree with Don.If you were restoring a rare model that parts were
not available for and it was for show only then a welded tooth might
be acceptable.If you intend to work the machine then see if you can
get a decent gear.If a welded tooth fails it may do even more damage
to the rest of the drivetrain.Gearboxes don't respond well to loose chunks
floating around in the gear oil as you have already seen.JimAnderson

[hunter41mag]

One thing I forgot to mention is make sure you have the mating gears to the one's with the broken teeth magnafluxed for cracks (most machine shops can do this for a reasonable cost). I would think the two gears with the broken teeth are the mating gears but if not than I would definately magnaflux the mating gears.

Don
Eastern PA
440IC

[wwattson]

David,

Why don't you share the part numbers of the gears you're looking for and let's see if someone on the board has a line on them.

[JimAnderson]

David,
If you don't have one already get a parts manual for your machine.
Bill mentioned part numbers and that is a must when dealing with these
old girls.When I go to the local JD dealer I have JD part number for him
punch into the computer.Saves him and me time and lets him know I'm
serious about what I need.Used parts from tractor salvers or E-bay are
identified by part numbers and lets you know what they are have.As far
as I'm concerned a parts manual is as important as any hand tool.If
you plan to repair, and keep this machine then invest in a parts manual.
JimAnderson

[dnormand25]

I have the parts manual, user manual and shop manual. i will identify the gear this week end and post the parts numbers. I appreciate the replys to my post.