6340 Brake and PTO problem

We were out cutting hay and the left brake partially locked up. When this happened it also caused the PTO hand clutch to not disengage. We are thinking that the left brake broke inside the housing and is somehow causing the pto to malfunction as well.

How do you access the brakes on this thing?

Why is it messing the pto hand clutch function up?

Other than this problem it has been a solid tractor so far.

Hi

The brake problem is probably one of the slave cylinders (on the rear of back axle under the plastic cover) siezed up. You can probably lever the brake off.
The PTO clutch is nowhere near the brakes so there can't be a connection, unless the driver is pulling the handbrake on instead of the PTO clutch !!

Mike

The brake cylinder seems to be functioning okay. It seems like the brakes inside are where the problem lies.
I'll look into this some more this evening and post what I find. We really don't want to take it to the dealer as they charge an arm and a leg just for labor.

We looked at this last evening. The left brake pedal is really stiff so it could possibly be the brake cylinder. Even if this is the problem we are probably going to have to replace the brakes because they were HOT and the pads may have been ruined.

I am thinking that the heat may have caused the pto mishap. We didn't have time to check it over because we had hay to make.

If the brake pads do need replaced, how do you access them?

Hi

To access the brake discs you have to remove the final drive assy. You'll need a crane or forklift as the lump is very heavy. I'd try them first as they will take quite a bit of heat before failing.

Mike

If as you say, the pedal is really stiff, this is most unusual. Have you checked that the pedal pivot pin is free ? Your problem may have been caused simply by the pedal not returnimg fully up.
The pedals are removed by taking out the bolt that takes a 10mm spanner on the pedal pivot shaft and then the shaft is pulled out by using a 6mm bolt screwed into the threaded hole in the end of the shaft.

Are the hand brake levers working ok? If those doesnt return properly, it can let breaks on. Another question is that are the slave cylinder seals ok? If water and dirt can go in the cylinder, those can stuck and breaks wont return. Mine ZTS did it steep downhill with 24 ton loaded trailer. I havent ever been so scared!

If it is the master cylinder (if it feels sticky) it can be occured by heat. One very hot summer, i was mowing hay with JF mower with conditioner whole day. The floor and pedals were so hot, i couldnt drive with bare legs, because pressing clutch was the same than barbeque your foot! I just put shoes on and continued until... Eh... Clutch master cylinder did expand by heat so much it stucked! When i let tractor getting cool, it started work again.

We looked at it a little the other evening but didn't have much time available. Between my regular job, baling hay and my side business there hasn't been a lot of free time lately.

We may look at it more tonight while having a few cold ones. We'll probably loosen the slave cylinder and see if that helps. I did try to pry the slave "open" but it is tight.

The pto hand clutch still won't function properly. We are going to adjust cable and see if that helps.

I'll post what we find.

Just got back from looking at the above mentioned problems. I took the pivot pin out of the linkage at the slave cylinder and the brake can be moved by hand. The pedal is also free now. So it looks like it is a bad slave cylinder.

Now to the PTO. We adjusted the cable tension and it still will not disengage. I adjusted it about 3/16" at the lever. I didn't know how far I could adjust it without possibly causing a failure.

This was a used tractor when it was bought so we don't have any knowledge of how the previous owner treated it. The CD-rom with all of the books came in the mail this evening so we at least will have all of the break down information for the tractor.

Any ideas about the hand clutch?