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HYDRAULIC    PRESSURE    INDICATING    SYSTEM    VISUAL    CHECK
HYDRAULICS   PRESS   lND   CIRCUIT   BREAKER   DOES   NOT STAY   CLOSED

TM-55-1520-240-T-2 CH-47D Heilcopter Manual
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TM 55-1520-240-T 8 - 7 . 3    H Y D R A U L I C    P R E S S U R E    I N D I C A T I N G    S Y S T E M    O P E R A T I O N A L    C H E CK 8 - 7 . 3 INITIAL SETUP Applicable    Configurations: All Tools: None Materials: None Personnel    Required: Medium  Helicopter  Repairer References: TM  55-1520-240-23 Equipment   Condition: TM  55-1520-240-23: Battery  Connected Electrical Power On Hydraulic Power On Hydraulic Pressure Indicating System Visual Check Performed  (Task  8-7.2) TASK RESULT Check   that   HYDRAULICS   PRESS   IND   circuit breaker (1) is  closed. Check   UTILITY   HYDRAULICS   PRESSURE   indi- cator   (2). If circuit breaker (1) is open, close it. If it opens again, go to task 8-7.4. Indicator (2) shall indicate 2500 to 3500 psi and pointer shall not fluctuate more than 100 psi. If indi- 1. 2. 3. 4. 5. 6. cator does not indicate  2500 to 3500 psi or if pointer fluctuates more than 100 psi, go to task 8-7.5. If it is not, set switch (3) to BOTH. Indicator (5) shall indicate 2500 to 3200 psi and pointer shall not fluctuate more than 100 psi. If indi- cator does not indicate 2500 to 3200 psi or if pointer fluctuates more than 100psi,   go   to   task 8-7.6. Check   that   FLT   CONTR   switch   (3)   is   at   BOTH. Set  POWER  XFR  No.  1  switch  (4)  to  ON. Check  HYDRAULICS  FLT  CONT  NO.  1  PRES- SURE   indicator   (5). Set  POWER  XFR  No.  1  switch  (4)  to  OFF. Set  POWER  XFR  No.  2  switch  (6)  to  ON. Indicator (7) shall indicate 2500 to 3200 psi and pointer shall not fluctuate more than 100psi.   If   indi- cator does not indicate 2500 to 3200 psi or if pointer fluctuates more than 100 psi, go to task 8-7.7. Set  POWER  XFR  No.  2  switch  (6)  to  OFF. 7. FOLLOW-ON   MAINTENANCE: TM  55-1520-240-23: Battery Disconnected Electrical Power Off Hydraulic  Power  Off E N D     O F     T A S K 8-124 Change  13







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