TM 5-5420-209-124-50. Hydraulic Reservoir Assembly. - Continuedb. Replace.(figure 4-66)WARNINGWhen working under boom, support boom by blocking or other suitable means.(1) Raise boom (1) fully and block in position.(2) Remove filler cap (2).(3) Open drain plug (3) and drain fluid into suitable container.WARNINGWhen disconnecting any hydraulic line, open line slowly and protect face, as hydraulic oil may spray outdue to residual pressure in system.NOTEWhen removing hoses, have a suitable container to drain oil from hoses. Also cap all hoses and portsimmediately to prevent dirt or foreign matter from entering the system.(4)(5)(6)(7)(8)(9)(10)(11)(12)Tag and disconnect three hydraulic lines (4) from hydraulic reservoir assembly (5).Connect hydraulic reservoir assembly (5) to a suitable lifting device.Remove four nuts (6), lockwashers (7) and bolts (8) and hydraulic reservoir assembly (5).Install hydraulic reservoir assembly (5) and secure with four bolts (8), lockwashers (7), andnuts (6).Apply antiseize tape to hydraulic lines fitting and connect three hydraulic lines (4) to hydraulic reservoir as-sembly (5).Close drain plug (2).NOTEOver filling reservoir will cause overflow when boom is lowered.Fill reservoir with hydraulic fluid until level is halfway between upper and lower marks on level gage (9).Close filler cap (2).Raise and lower boom (1) several times. Raise boom (1) to full vertical position and recheck level, and addfluid as needed.4-194
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