Case/David Brown 996 brakes question

I have just lost pressure on my left brake and the right one followed suit fairly quickly.

I don't really know what kind of brake system these things have. Should I be aware of anything before I open them up?

Having two brake pedals are they two independent systems?

As my brakes failed in the above sequence, does it give a clue as to where the leak is?

I know that it may not be necessary to open up the brakes themselves but it is a 1978 so its anybodies guess when they were last checked, is it advisable to do this anyway?

What can i expect to find? Shoes?

Any info before I embark on this much appreciated!

Cheers

Charlie

UK

I have discovered brake fluid on the left cylinder, so a leak it must be. I also didn't realise there were two brake fluid reserves, the right one is empty.

I had no idea there was a different type of brake fluid..... ...I topped it up with normal stuff, should I flush it out and start again?

Cheers

Charlie

Yes there are some important things to know before disassembly: for instance, the differential lock needs to be held in the locked position. Yes they are drum brakes.

I don't mean to be rude, but if you do have mechanical brakes and you could not tell there were no hydraulics, then I would suggest you have the brakes fixed by a pro.

My manual suggests the only tractors with hydraulics would be front wheel assists or heavy duty front axles with front brakes. Do you have front brakes?