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POWER SERVICE UTILITY HYDRAULIC SYSTEM RESERVOIR
POWER SERVICE UTILITY HYDRAULIC SYSTEM RESERVOIR    (Continued) - TM-55-1520-240-23-1_256

TM-55-1520-240-23-1 UH-1H/V and EH-1H Aircraft Manual
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TM 55-1520-240-23-1 1-59 POWER SERVICE UTILITY HYDRAULIC SYSTEM RESERVOIR    (Continued) 1-59 3. Make  sure  UTILITY  RESERVOIR DEPRESSURIZE valve (4) and EMERG UTIL PRESS valve (5) are set to NORMAL. 4. Press and hold depressurization valve (7) on APU start module (8) until accumulators have discharged completely. 5. Release valve (7). 6. Turn valve (4) to OPEN. NOTE Be sure to read correct scale on gauge according to whether ramp is fully up or fully down. 7. Press and hold LEVEL CHECK button (9) on MAINTENANCE PANEL (10).  Read reservoir fluid level on gauge (11). 8. Have helper operate test stand.  Set test stand flow limits to minimum flow position.  Turn on test stand.  Set stand pressure between  500 and 1000 psi (TM 55-4920-335-14 or TM 55-4920-373-14&P). 9. Have helper press and hold valve (7).  Press button (9) and read gauge (11). 10. When gauge (11) indicates FULL, release valve (7), and button (9). Turn valve (4) to NORMAL. 11. Shut down test stand. 12. Disconnect test stand pressure line (3) from utility pressure connection (2). 13. Replace dust cover (1) on utility pressure connection. 1-228







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