4. Clean threads of fasteners before pre-applying Loctite #243 to the threads, and before torquing the cover bolts. 5. Pre-fill the center swivel with clean hydraulic fluid prior to reassembly of high-pressure and drain line piping. Clean and pre-fill piping line ends to reduce the amount of air in the system. Bleed air from the hydraulic system and verify hydraulic tank fluid level before returning the excavator to service. S0704090K Page 7 Center Joint (Swivel)