HYDRAULIC SYSTEM LEAK CHECK - TM-1-1520-238-23-4

PRIMARY HYDRAULIC SYSTEM INSPECTION continued - TM-1-1520-238-23-4_679

HYDRAULIC SYSTEM LEAK CHECK - TM-1-1520-238-23-4_681

TM-1-1520-238-23-4 Helicopter Attack AH-64A Apache (NSN 1520-01-106-9519) (EIC: RHA) Manual
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TM 1-1520-238-23 7-12 7.2. HYDRAULIC SYSTEM LEAK CHECK 7.2.1. Description This task covers: Leak Check. 7.2.2. Initial Setup Tools: Aircraft mechanic’s tool kit (item 376, App H) Fluid service unit (item 137, App H) Personnel Required: 67R Attack Helicopter Repairer One person to assist 152F Pilot (if method a(3) is used) References: TM 55-1520-238-10 Equipment Conditions: Ref Condition 1.57 Helicopter safed 7.2.3. Leak Check NOTE This task verifies hydraulic system leaks or system integrity. a. Apply pressure to hydraulic system. The hydraulic system may be pressurized by: (1) External hydraulic power: (a) Primary hydraulic system (para 1.72). (b) Utility hydraulic system (para 1.73). (2) APU: (a) Using battery power (para 1.74). (b) Using external power (para 1.75). (3) Ground run of helicopter (TM 55-1520-238-10). GO TO NEXT PAGE

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