How serious are pits in the teeth of the driven gear. Not on all teeth have pits, but those that do look to be about .020 deep, other than the pits the gear looks good with little wear. I'm a buyer if someone's got a gear for sale. Bob at 903 824 1949. Thanks
Which driven gear are we talking about?
Peter
Bob - A machinist would tell you that it's in terrible condition and to replace it by all means!
However, a "dyed-in-the-wool" Model "T" guy would say,....no problem. Those little pits are just little oil reservoirs that will hold a bit more lubrication!
Me personally, I have no idea but I am a pretty dedicated Model "T" guy,....ha,ha,....harold
The gear on the transmission brake drum, press fit with two key ways. Engages the triple gear next to the flywheel.
A picture would help. Some pits are no problem unless there is severe wear. The transmission might be a bit noisy when in low or reverse, or at idle, but If the pits are not deep, would not cause damage.
Norm
Bob Shirly:
I have many of them. Email me at modelt1912l@msn.com
Bob,
That's an easy enough gear to find. There should be no reason to use a questionable one.
Bob Shirley:
I cona't pull up your profile so I don't know where you live, but if you can walk in my shop or if you have a friend that can I will give you a couple clear and free
If its an original transmission running an experienced set of bushings and gears then keep all your original parts and put it back together. It won't be any noisier than before. Start swapping gears from another unit, or rebushing, or both you are asking for a noisy transmission. Most Model T transmission gears have been running nearly 100 years and have flaws from wear but are quite serviceable.
I have a 76 Ford pickup that I rebuilt years ago, the rear ring gear was in terrible shape, as it had been run with a bad pinion bearing, there were gouges in every gear on the ring gear that were about 1/16 to 1/8 deep. I did not have a replacement, so I put it back together to get by until I could replace the ring and pinion (with a new bearing) and I put 160 thousand miles on the pickup before parking it due to a bad carb. I never had a bit of trouble or noise form the rear end, I think Harold is right, it is oil pockets to aid in lubrication.
Best
Gus