Transmission

[Bus Driver]

I have no experience repairing the Cub transmission beyond repairs to the shifter cover. I have done some repairs on other transmissions, including rebuilding a Borg-Warner 3-speed for a 1947 Studebaker and a 4-speed heavy duty for larger trucks. Transmission gears under load have tremendous forces trying to push the gears away from each other. My thought is that the Cub gears, even if showing some wear, are likely to function quite well and with tolerable noise levels if the bearings are all good. I have one that is alarmingly noisy. Unless a gear is seriously chippped or broken, I plan to reuse it. All the bearings will be replaced. I have heard of replacement gears, new from unknown manufacturers, that were more noisy than the old ones they replaced. Perhaps only a few on this forum have rebuilt multiple Cub transmissions and thus the experience level is limited. Anyone have regrets about reusing an old gear? If so, why?

[Donny M]

When I rebuilt my 49 I reused gears that were pitted slightly. I even went to the trouble to hone each gear. Boy was it ever noisy In second gear you couldn't hear yourself think.
Then came Ralph to the rescue and he sent me a rarely used transmission from a 154 (I think). What a difference Such a difference I named the tractor after Ralph.
If I were to do it all over again, I would replace all the gears instead of trying to get by with bearings only.
Just my opinion.

[John *.?-!.* cub owner]

If your problem is a whine, even if pretty loud, it is teeth wear, and while it cna be annoyign, it won't hurt nayhting. If it is a rumbling, or growling type noise though, you probably have a bad bearing, which if ignored will cause a problem. which gear is making noise first?

[Bus Driver]

Donny, what transmission lubricant was being used when it was so noisy?

[Donny M]

At first, I was using Hy-Tran then switched to 90 wt gear lube. The switch wasn't noticeable.

[WKPoor]

New gears are available from Midwest SuperCub http://www.midwestsupercub.net/trans_parts.htm . You can even change the ratios slightly. I haven't been on there site in a while and have no idea the cost involved. Might be something to look into ????

[Ralph]

I have 2 more of those cadet transmissions listed in my website
Thanks Ralph