First overhaul, advice on wet brake system.

[UpsideDown]

Greetings from middle GA!
This is my first post on here.
I am a decently experienced auto mechanic, but this is my first time working on a tractor.
I recently bought a MF1010, then bought a second one for parts that came with a MF1014 Front End Loader.
After tearing tractor down, I wanted to inspect one of my brakes as it was not working properly. I was curious about how it worked, so I pulled the cover off of the little brake drum to see how it worked. I was surprised to see a decent amount of oil come out once I cracked it loose!
That is how I learned about wet brakes haha!

My question is, I am planning to change all the hydraulic fluid as I am overhauling this machine, do I have to find a way to fill the brake compartment with fluid or does it fill up by itself when I fill the rest of the system?

Knowledge is appreciated!
Thanks

 

[ptsg]

Hi, welcome to the forum.

Wet brakes typically have a multi disc setup that work under an oil bath, then a pressure plate that applies pressure and therefore it brakes the tractor.

Drum brakes are typically dry brakes. Are you sure you don't have a bad seal on the shaft that comes out of the transmission? I'm pretty sure this will be the case of your brake issues.

 

[ptsg]

To give you a better idea on what you're dealing with, I'll show some pictures of the brakes on my Agria. While it will have some minor differences, the concept is still the same.

Behind the drum, this is what you'll see. The drum shoes, a couple springs and the cam shaft that will push the brake shoes out and against the drum. Note the shaft in the middle, in this case, with splines and threads. On this shaft, there will be an oil seal that prevents oil from the transmission to come to the brake parts.

I believe this is seal is bad on your tractor and the brakes are getting soaked in oil and just not working at all.

 

[UpsideDown]

To give you a better idea on what you're dealing with, I'll show some pictures of the brakes on my Agria. While it will have some minor differences, the concept is still the same.

Behind the drum, this is what you'll see. The drum shoes, a couple springs and the cam shaft that will push the brake shoes out and against the drum. Note the shaft in the middle, in this case, with splines and threads. On this shaft, there will be an oil seal that prevents oil from the transmission to come to the brake parts.

I believe this is seal is bad on your tractor and the brakes are getting soaked in oil and just not working at all.

View attachment 2927844

Mine looks almost exactly like this system, although a little smaller. Thank you for sharing what you know. I am curious about why my brake covers use a cork gasket, they were well sealed, no fluid was leaking until I broke it loose. Perhaps this gasket is just meant to keep the elements out of it? That is why I assumed it must be a wet system, as tight as it was. The shop manual does not however mention it being a wet system.

Looks like I am going to need a seal! Hope I can find something, consumable parts for this tractor are hard to source.

edit - shop breakdown shows two seals it looks like! Parts 25 and 26. Now if only I can find them. May have to use my used parts from donor.

 

[RayIN]

As stated, your MF1010 has mechanical (dry) drum brakes.
ref: TractorData.com Massey Ferguson 1010 tractor information

 

[ptsg]

Mine looks almost exactly like this system, although a little smaller. Thank you for sharing what you know. I am curious about why my brake covers use a cork gasket, they were well sealed, no fluid was leaking until I broke it loose. Perhaps this gasket is just meant to keep the elements out of it? That is why I assumed it must be a wet system, as tight as it was. The shop manual does not however mention it being a wet system.

Looks like I am going to need a seal! Hope I can find something, consumable parts for this tractor are hard to source.

edit - shop breakdown shows two seals it looks like! Parts 25 and 26. Now if only I can find them. May have to use my used parts from donor.

Looks like it's a 2 piece seal (seal + sleeve). You should be able to get them from a parts store, bearing supplier or even hydraulic shop.

The sleeve is there, so the seal doesn't wear a groove on the shaft. The shaft is a lot more expensive to replace and I imagine, hard to find. So the sleeve is a sacrificial part. If it's in good shape, you may be able to get away with just the seal.

 

[ericm979]

Most seals and bearings are generic industrial ones which any bearing shop should be able to order if you can bring the old part in.

 

[UpsideDown]

Looks like it's a 2 piece seal (seal + sleeve). You should be able to get them from a parts store, bearing supplier or even hydraulic shop.

The sleeve is there, so the seal doesn't wear a groove on the shaft. The shaft is a lot more expensive to replace and I imagine, hard to find. So the sleeve is a sacrificial part. If it's in good shape, you may be able to get away with just the seal.

Thank you - I was able to order the seals on Amazon as a generic part. Hopefully the metal sleeves hold up!
I appreciate your help.

 

[UpsideDown]

As stated, your MF1010 has mechanical (dry) drum brakes.
ref: TractorData.com Massey Ferguson 1010 tractor inform

Correction, my MF1010 "did" have dry brakes.