50 B Break in Oil Turning Brake

1) How long should break in oil be used. Tractor is not used for heavy pulling. Rides with grand kids, parades and a number eight cycle bar mower.

2) My right turning break all of a sudden pops and grinds excessively if I touch it hard or light. I quit using it immediately when this started this week. Any ideas as to what might be the problem.

Thanks in advance

Dick

My suspicion is that you have one or both brake shaft bushings worn.

Our '48 "A" had this, and as you would drive at higher speeds (like hoeing in 5th), the slop in the brake shaft to bushing would allow the brake driven gear to walk up the bull gear tooth, then as the shaft would attempt to stop this travel, it would be forced to "pop" back down into the bull gear groove. Eventually, the gear on the brake shaft split in two, which would have been fairly easy to repair, but it fell into the right side bull gear, and when it came around to the differential, it broke the main case quill on the right side (the one that is cast into the case), and old S/N 595751 was no more. I bought another "A" with a bad crank, and put the good engine in this tractor.

Moral of the story: If you can determine which side it is coming from, pull the brake assy out far enough to clear the teeth of the bull gear, and then test it. If no noise, that's the culprit. But find it out and fix it before something catastrophic occurs.

Frank-in-Tallahassee
70 D // 855

I think I pretty well understand what you are saying. It pops only while pressing the right brake pedal. The left one works well and quiet. Does this mean I should suspect and pull the right brake assy out a little and then drive and press on this partially pulled out brake assembly to see if it goes away.

Thanks for your help

Dick

Yes, but you pretty much have narrowed it down to the right assembly. Also, our "A" popped with or without brake pressure. You need to go ahead and pull that assembly and check for bushing wear. Now, I would not be surprised to hear that you only have a build up of grease/dirt/gear oil in there and the shoe is jumping trying to get a bite.

But either way, you'll have to pull it and clean and inspect it. I always tell that story of the broken gear to people when they say they have brake noises to show how quickly something terminal can happen.

Lemme know whatcha find !

F-I-T