Super MTA brakes

[Ellis Kinney]

Two winters ago I replaced the brakes on the Super (disc brakes). Worked perfectly for two years. About six weeks ago I used the tractor to rake hay on steep hillsides where I use the brakes to help steer from time to time. Worked perfectly. Last Friday the left brake kept locking up. Hit the brake and the tire would skid, let up and it would roll. I am going to go into it this week and maybe someone will know what to look for. When I replaced the brakes I was meticulous in cleaning and polishing the ramps and I replaced the marbles. Thanks, Ellis

 

[rustred]

It is quite possible you have a leaking seal. Remember how the rear wheel would skid on you’re vehicle once it got gear oil on the brake shoes.

 

[BarnyardEngineering]

That was two years ago. Doesn't mean they can't get dirty in the meantime.

Does the brake CLUNK when it engages? That means it's going over center and the permanent wear surfaces are worn. When things are borderline, new discs are enough to get it back in spec, but it doesn't take much for them to wear back to where it starts to be a problem again. You need the edge of the brake drum machined down to account for the wear. OEM Tractor Parts used to offer this service, but they're out of business. I'm not sure if anyone offers it anymore. Anyone with a Bridgeport and a fly cutter or shell mill can perform the work, they just need to know how much to take off.

 

[MARK ROBKE]

Since it released when you let off the pedal, I would think the ramp and rollers are ok. I would guess you have an oil seal very slightly leaking, contaminating the lining, causing the grabbing. Mark.

 

[MARK ROBKE]

P.S. when my expander was worn out and the ramp and rollers were hanging up, I had to back up to get them to release. Mark.

 

[Janicholson]

Final clearance from the stack of parts inside the housing to the tractor side face should be .045-.060 max. Jim

 

[Ellis Kinney]

Are you not working at Augusta any more? Ellis

 

[Ellis Kinney]

I replaced the seals of course and doubled up on them with grease between the seals, but I guess both of them could seep a little. Ellis

 

[MARK ROBKE]

Ellis-I quit about a year ago back in May. I was having back pain issues and feel better now, just can't bend and lift all day long. Greg hired a young guy who is very good- I worked with him for a while before I quit. Good luck with your brakes! Mark.

 

[Ellis Kinney]

I stopped by to see you about two months ago. I pulled my neighbor's tractor up to the Kubota dealer. Ellis

 

[MARK ROBKE]

Sorry I missed you. Here lately I've been going over the ferry to my BIL's place up in Feesburg-helping him some in his shop, a couple days a week. Mark.