M7060 with bad brakes!

[romoni]

Hello everyone, I don't have the Branson anymore, I got myself a Kubota M7060 12 shifts, 2016 with an M21 loader and snow blower, 1340 hours on it, really nice tractor but. The one and only problem with it, and it is quite a serious one is faulty travel brakes. I have to pump the pedals to get brakes, the right one will go right to the floor on the first pump, gains three inches on the second pump and is good after the fourth pump. The left brake pedal will not go all the way to the floor on the first pump but stops three inches from the floor and is good after the second pump. Once foot ¨primed¨, both brake pedals stay within half to three quarters inch from their resting position with no sponginess OR sinking with applied foot pressure, at that point both brakes will positively lock the back wheels. As soon as you release the pedals they are both instantly ¨deprimed¨ again. The oils and filters were just changed and trans oil was replenished with Kubota UDT. I have been over forums and there is not much on this as there seems to be very few cases. Since both brakes will sit pretty after being pumped, could the master brake cylinder be the problem? Any help would really be appreciated and merry Christmas to all!

 

[Hay Dude]

Hello everyone, I don't have the Branson anymore, I got myself a Kubota M7060 12 shifts, 2016 with an M21 loader and snow blower, 1340 hours on it, really nice tractor but. The one and only problem with it, and it is quite a serious one is faulty travel brakes. I have to pump the pedals to get brakes, the right one will go right to the floor on the first pump, gains three inches on the second pump and is good after the fourth pump. The left brake pedal will not go all the way to the floor on the first pump but stops three inches from the floor and is good after the second pump. Once foot ¨primed¨, both brake pedals stay within half to three quarters inch from their resting position with no sponginess OR sinking with applied foot pressure, at that point both brakes will positively lock the back wheels. As soon as you release the pedals they are both instantly ¨deprimed¨ again. The oils and filters were just changed and trans oil was replenished with Kubota UDT. I have been over forums and there is not much on this as there seems to be very few cases. Since both brakes will sit pretty after being pumped, could the master brake cylinder be the problem? Any help would really be appreciated and merry Christmas to all!

It’s possible. Hard to tell without driving it and more info. My bigger kubotas have a lot of sensitivity on the brakes if the master cylinder reservoir is even a little low.
I replaced a master cylinder on my 126x this summer. It had a bad leak. But mine is a 2011 with 3,000 hours.
They should work with a lot less hassle than you’re describing. That’s not a lot of hours to be having those problems.

 

[Tx Jim]

romoni
Have you attempted to bleed both RH & LH brakes? It appears from viewing M7060 parts catalog that brake master cylinder is supplied hyd oil from power steering control valve. Bleeder valves are on each side of trans case.

Kubota M7060HDC12 Parts Diagrams

Kubota Parts Catalog Lookup. Buy Kubota Parts Online & Save!

www.messicks.com

 

[5030]

Time to purchase a shop manual I'd say....

 

[KWentling]

Time to purchase a shop manual I'd say....

I found a free download online. Can't tell you where, but it is out there.

 

[5030]

I found a free download online. Can't tell you where, but it is out there.

I already know where. www.kubotabooks.com

 

[deserteagle71]

I already know where. www.kubotabooks.com

No reference to a M7060 in that link. Seem to be only older models.

 

[romoni]

Time to purchase a shop manual I'd say....

Just ordered one today!

 

[romoni]

It’s possible. Hard to tell without driving it and more info. My bigger kubotas have a lot of sensitivity on the brakes if the master cylinder reservoir is even a little low.
I replaced a master cylinder on my 126x this summer. It had a bad leak. But mine is a 2011 with 3,000 hours.
They should work with a lot less hassle than you’re describing. That’s not a lot of hours to be having those problems.

From what I found out the master cylinder has a constant supply of transmission oil.

 

[romoni]

I found a free download online. Can't tell you where, but it is out there.

Thanks!

 

[romoni]

I already know where. www.kubotabooks.com

Nothing there for the 7060, good try!

 

[romoni]

romoni
Have you attempted to bleed both RH & LH brakes? It appears from viewing M7060 parts catalog that brake master cylinder is supplied hyd oil from power steering control valve. Bleeder valves are on each side of trans case.

Kubota M7060HDC12 Parts Diagrams

Kubota Parts Catalog Lookup. Buy Kubota Parts Online & Save!

www.messicks.com

It will be my next move tomorrow. Thanks!

 

[Hay Dude]

From what I found out the master cylinder has a constant supply of transmission oil.

Ok that’s better than mine. Mine has a flimsy rubber cap and you fill it like an automobile master cylinder

 

[Thunder chicken]

Here’s a link to the shop manual

WSM M7060 WORKSHOP MANUAL Pdf Download

View and Download wsm M7060 workshop manual online. M7060 tractor pdf manual download. Also for: M6060.

www.manualslib.com

I downloaded this one, I’d email it to you but at 71mb, I’m not sure I can.

 

[JWR]

From what I found out the master cylinder has a constant supply of transmission oil.

Transmission oil? I can't think that the brakes use transmission oil or any other oil. Surely they use brake fluid. Anyone else know for sure ? Manual should say.

 

[ptsg]

Transmission oil? I can't think that the brakes use transmission oil or any other oil. Surely they use brake fluid. Anyone else know for sure ? Manual should say.

Yes, the power steering circuit feeds the brakes on that tractor as well.

 

[Hay Dude]

Transmission oil? I can't think that the brakes use transmission oil or any other oil. Surely they use brake fluid. Anyone else know for sure ? Manual should say.

My Kubotas brake master cylinder uses Kubota Super UDT

 

[JWR]

Wow ! I am amazed that tractors (at least some Kubotas) use oil instead of brake fluid for brakes. Wonder why AND I wonder what differences that makes in brake behavior?

 

[LouNY]

Wow ! I am amazed that tractors (at least some Kubotas) use oil instead of brake fluid for brakes. Wonder why AND I wonder what differences that makes in brake behavior?

Most tractors with hydraulic brakes use transmission/hydraulic fluid to operate them,
usually they are also at least partially immersed in it.

 

[JWR]

Most tractors with hydraulic brakes use transmission/hydraulic fluid to operate them,
usually they are also at least partially immersed in it.

Thanks. I did not know that. I see wet brakes and wet clutches bantered about all the time and never had a good overview of what got wet with what. I'm sure my MF2660 brakes imbedded within the large rear axle housings are the tranny fluid flavor of wet.