HYDRAULIC SYSTEM BLEED continued - TM-1-1520-238-23-1

HYDRAULIC SYSTEM BLEED continued - TM-1-1520-238-23-1_165

HYDRAULIC SYSTEM BLEED continued - TM-1-1520-238-23-1_167

TM-1-1520-238-23-1 Helicopter Attack AH-64A Apache (NSN 1520-01-106-9519) (EIC: RHA) Manual
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TM 1-1520-238-23 Change 5 1-114.3 1.35. HYDRAULIC SYSTEM BLEED – continued (c) Slowly push pilot right pedal (46) forward to stop then back to center. Repeat for left pedal. Repeat 10 complete cycles. (3) Verify primary and utility manifold fluid levels are correct (para 1.34). (4) Check for air bubbles in the AGPU air bleed sight gage. Repeat steps (1) and (2) as re- quired to clear remaining bubbles. ac Reduce AGPU output pressure to 0 psi and shut down AGPU (TM 55-1730-229-12). ad Disconnect AGPU return hose (13) from re- turn “Y” hose coupling (14). (1) Turn coupling nut (16) counterclockwise until it clears “Y” hose coupling (14). (2) Install cap (15) on “Y” hose coupling (14). ae Disconnect AGPU pressure hose (17) from pressure “Y” hose coupling (18). (1) Turn coupling nut (20) counterclockwise until it clears “Y” hose coupling (18). (2) Install cap (19) on “Y” hose coupling (18). af Perform APU power up (para 1.75). ag Perform TADS power up (TM 1-1270-476-20). ah Perform area weapon system power up (TM 9-1090-208-23). WARNING Hydraulic pressure is 3000 psi. This can cause injury. If injury occurs, seek medical aid. To prevent injury when moving gun turret, ensure that all personnel are clear of gun travel area during turret operation. If injury occurs, seek medical aid. GO TO NEXT PAGE PILOT STATION M04-1611-32 46 15 13 17 20 16 18 14 19 M04-1611-33

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