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APU  HYDRAULIC  STARTING  SYSTEM  VISUAL  CHECK  (Continued)
APU  START  ACCUMULATOR  GAGE  DOES  NOT  INDICATE  AT  LEAST 3000   PSl

TM-55-1520-240-T-1 CH-47D Heilcopter Manual
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TM  55-1520-240-T 7-8.3  APU  HYDRAULIC  STARTING  SYSTEM  OPERATIONAL  CHECK INITIAL  SETUP Applicable Configurations: All Tools: None Materials: None Personnel Required: Medium   Helicopter   Repairer   (2) References: TM   55-1520-240-23 Equipment Condition: TM   55-1520-240-23: Battery   Connected Electrical  Power  Off Hydraulic   Power   Off Visual  Check  of  Apu  Hydraulic Starting   System   Performed   (Task   7-8.2) TASK R E S U LT 1.  Check   APU   start   accumulator 2.  Start   APU.   Refer  to  task  15-1.4. 3.  Stop   APU.   Refer  to  task  15-1.4. gage   (1). Gage  (1)  shall  indicate  at  least  3000  psi.  If  it  does not,  use  hand  pump  to  charge  accumulator.  If gage  still  does  not  indicate  at  least  3000  psi,  go  to task   7-8.4. APU  shall  begin  to  motor  and  accelerate  to  run- ning  speed  within  30  seconds.  UTILITY  HY- DRAULICS  indicator  (2)  shall  indicate  3200  to 3500  psi.  If  indicator  does  not  indicate  3200  to 3500  psi,  stop  apu  and  go  to  task  7-2.4.  If  APU does  not  motor,  go  to  task  7-8.5.  If  APU  motors but  does  not  start,  go  to  task  15-1.9. FOLLOW-ON   MAINTENANCE: TM   55-1520-240-23 7-8.3 7-212 Change 1







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