Does anyone know how the parking brake system works on this machine?

[Ryxilo Trader]

Mine doesn't seem to be holding at all-trying to figure out if it's a driveline brake, hydraulic system, or something in the transmission.

 

[Ellen Deuch]

That's what makes it frustrating because those symptoms can point in a few different directions. If 1st is still pulling strong, I'd probably start by checking the simpler stuff first before assuming the transmission is toast. I've seen cases where linkage or pressure issues made it feel way worse than it actually was