9 Rev. 9/14GB7045HEADRemove nose assembly from tool before attempting disassembly of head cylinder (745366).Remove end cap (745816). Push against threaded end of piston (745310) to slide it out of head cylinder (745366). Be careful not todamage threads or cause burrs on polished piston rod surface.WARNING: Dispose of Hydraulic Oil in accordance with applicable regulations.The re-assembly sequence is the opposite of disassembly. (See Filling and Bleeding instructions.) Apply Loctite® #242 and torquethe four button-head cap screws (402479) uniformly to 40 inch lbs. to prevent leakage around the gasket (745124).480125 - RETAINING NUT STOP480101 - PINTAIL TUBEA-261 - O'RING401119 - BACK-UP RING401119 - BACK-UP RING405889 - O'RING756120 - DEFLECTOR480124 - NUT753101 - NOSE FITTING401092 - BACK-UP RING745366 - HEAD CYLINDER403815 - O'RING745310 - PISTON401105 - BACK-UP RING745816 - END CAP402482 - BUTTON HEAD SCREW (2)S572 - STAT-O-SEAL (2)A-820 - O'RING403846 - O'RINGWARNINGThis tool incorporates a patented hydraulic relief valve.When overhauling tool, o’ring (A-287), back-up ring(401101), retaining ring (400936) and spring (50806)must be replaced. Failure to do so could result inSEVERE PERSONAL INJURY!PISTON ROD ASSEMBLY - 745344SPRING - 50806RETAINING RING - 400936O'RING - A-287BACK - UP RING - 401101