TM 9-2350-238-34-26 No leakage is allowed around open port (5), around hydraulic piston (1), or around boomcylinder head (6).7 If leakage occurs, disassemble boom control cylinder assembly (2) and check for damagedparts.8 If no leakage occurs, reduce pressure and remove hydraulic line or hose (4).9 Drain hydraulic fluid (item 10, appx B) and plug cylinder ports (3) and (5).INSTALLATIONl Hydraulic system is under highpressure. Follow hydraulicsystem safety procedures toprevent injury (TM 9-2350-238-20-2). Wipe up all spilledhydraulic fluid.l Make sure hydraulic system isdepressurized before performingany hydraulic maintenance toprevent injury to personnel.l Use hoist with minimum liftingcapacity of 2000 lb (908 kg) toprevent injury to personnel anddamage to equipment.NOTEl Another M578 Recovery Vehi-cle or M88A1 Recovery Vehiclemay be used, if available, forlifting.l The following steps are writtenand illustrated for installation ofone boom winch controlcylinder assembly, but apply toboth .1 Secure sling around boom winch controlcylinder assembly (1). Lift boom winchcontrol cylinder assembly and lowerthrough cab door into place.2-95
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