What's the simplest way to release the CAT 730 brakes manually so I can get it loaded without making a dozen trips?

[Mr. McTuggart]

Hey guys, I just picked up a non-running CAT 730 about an hour away, and I'm trying to prep for the haul. Does anyone know if these will roll while the engine is down? If the brakes are locked, what's the simplest way to release them manually so I can get it loaded without making a dozen trips?