Massey Ferguson 135 leaking hydraulic fluid

[Some Random Guy]

I recently bought my first tractor, a 1969 or 70 Massey Ferguson 135. It runs and drives well but before I use it to bale hay this summer I wanted to change the oils and filters and check for leaks.

I noticed hydraulic oil is leaking from the brake lever on the axel, it looks like it's coming from behind the rubber cover that is behind the brake lever bracket. There doesn't seem to be a gasket to replace so I was hoping for advice on how to stop this leak

 

[Dieseltech]

That does not look like any 135 axle/brake assembly I've seen, all my 135s have drum brakes next to the wheel. Your picture looks like an early 165/175 axle with the inboard two disc brake setup.

 

[Some Random Guy]

That does not look like any 135 axle/brake assembly I've seen, all my 135s have drum brakes next to the wheel. Your picture looks like an early 165/175 axle with the inboard two disc brake setup.

What it looks like according to the agco parts book is the disc brakes (Orchard) (Malleable Axel)

 

[m16ty]

You’re going to have to pull the axle to fix that. There shouldn’t be any oil in the brake housing, it’s leaking from the shaft behind the brakes.

 

[Dieseltech]

What it looks like according to the agco parts book is the disc brakes (Orchard) (Malleable Axel)

Most 135s are NOT the orchard model where I live.

 

[Some Random Guy]

You’re going to have to pull the axle to fix that. There shouldn’t be any oil in the brake housing, it’s leaking from the shaft behind the brakes.

I knew the tractor was going to need a bit of tlc before I put it to work, but that sounds like a lot more work. I ordered a service manual so hopefully that will be enough to guide me through the process of taking the axel off, replacing any seals and putting it back together correctly.

 

[m16ty]

I knew the tractor was going to need a bit of tlc before I put it to work, but that sounds like a lot more work. I ordered a service manual so hopefully that will be enough to guide me through the process of taking the axel off, replacing any seals and putting it back together correctly.

I've got a MF40 industrial that has the same brakes. While I haven't been into them, I know there shouldn't be any oil there. Shouldn't be a huge job but you are going to have to pull the axle.

 

[Ray,IN]

Your brakes are dry brakes, this video applies. The axle seal is leaking, while apart I'd replace the brake discs too.

 

[lstra]

If your Massey Ferguson is indeed a 135, the optional IPTO used differential of the MF150, which had planetary gear drive. My cousin had a 135 like that.

 

[lstra]

This Massey Ferguson 135 may have the optional IPTO, which used the differential from the Massey Ferguson150, which had planetary gear drive My cousin had one.

 

[Some Random Guy]

After doing a little research online and picking up an I&T shop manual at TSC, I believe I have a 135 Orchard model. It's a 3 cylinder Perkins Gas with a 6 speed transmission. It does use the same rear end as the 150 or 165 and has early three pinion planetary final gear drives. It has a solid front axle with a power steering cylinder on each side and a J.S. Barnes power steering pump mounted on the right side of the engine. I'm not sure if it has the IPTO or not.
I feel confident enough that I can remove the axel and replace the seal now that I've watched that video and have a couple manuals. Besides this leak I also have a problem with the power steering cylinders. I don't know if they were just old and worn out but it looks like the seals partially blew out the ends of them. I don't know if it's because they were old or a problem with the power steering pump but i'll post some pictures tomorrow. Thank you for all the replies and help so far!