I bought used L4350 from a guy in Illinios this past week end and did not inspect the new battery he put in (a very large NAPA Commercial grade battery with nothing more than a bungee cord to hold in Place). After less than 20 minutes of use I was digging around stump and the battery flip over in a shorted out striking the oil cooler causing a leak and fire. Short story is I have removed the battery and oil cooler and their was little collateral damage. I need to know how to bleed the system after I replace the oil cooler and I want to test the radiator to make sure it was not damaged during the fire. Can I close off the hydraulic line for a radiator idle only test for leaks without the new oil cooler installed? THX