TM 5-3810-207-20/TO 36C23-3-37-12and in turn actuates the clutch through cylinder linkage.When pressure is released, a return spring causes thecylinder piston to return to its normal position, and fluid isreturned through the connecting line -to the mastercylinder.129. Master Cylindera.Removal.(1)Drain master cylinder.(2)Remove the master cylinder as instructedon figure 59.b.Cleaning, Inspection, and Repair.Caution:Make sure the working area is cleanand dust-free, wherever hydraulics ortheir principles are involved.Cleanliness is the greatest factor ofgood hydraulic operation.(1)Clean all parts with an approved cleaningsolvent.(2)Inspect all parts for breaks, leaks, and otherdamage. Replace as necessary.c.Installation.(1)Install the hydraulic master cylinder asillustrated on figure 59.(2)Fill the master cylinder with hydraulic oil(LO 5-3810-207-20).(3)Bleed the hydraulic system (par. 133).130. Boom Hoist Brake Hydraulic Cylindera.Removal.(1)Drain boom hoist brake hydraulic cylinder.Figure 59. Hydraulic master cylinder, removal and installation.91
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