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TRANSMISSION CHIP DETECTORS AND DEBRIS SCREENS VISUAL CHECK (Continued)
CHECK FORWARD TRANSMISSION CHIP DETECTOR AND DEBRIS SCREEN INSTALLATION

TM-55-1520-240-T-1 CH-47D Heilcopter Manual
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TM 55-1520-240-T 6-2.3  TRANSMISSION CHIP DETECTORS AND DEBRIS SCREENS OPERATIONAL CHECK 6-2.3 INITIAL SETUP Personnel Required: Applicable Configurations: Medium Helicopter Repairer (2) All Equipment Condition: Tools: TM 55-1520-240-23: Container, Two Quart Battery Connected Aircraft Mechanic's Tool Kit, Electrical Power On NSN 5180-00323-4692 Hydraulic Power Off Materials: Visual Check of Transmission Chip Detectors and Cloths (E120) Debris Screens Performed (Task 6-2.2). TASK RESULT CHECK INDICATORS 1.  Check that MAINT PNL circuit breaker (1) is closed. If MAINT PNL circuit breaker (1) is open, close it.  If it opens again, go to Task 8-14.4. 1.1  Check master caution panel (2). If NO. 1 or NO. 2 ENG CHIP DET (Without 74) ENG 1 or 2 CHIP DETR (With 74) capsule (7 or 8) is lit, go to Task 6-2.4.  If XMSN CHIP DET (Without 74) XMSN CHIP DETR (With 74) capsule (9) is lit, go to Task 6-2.5. 2.  Check six TRANSMISSION CHIP DETECTOR indica- All indicators (3) shall be all-black.  If any indicator (3) tors (3). displays black-and-white fan, go to Task 6-2.6. 3.  Check six TRANSMISSION DEBRIS SCREEN indica- All indictors (4) shall be all-black.  If any indicator (4) tors (4). displays black-and-white fan, go to Task 6-2.7. WITH 37 WARNING If   plug   235P9   is   not   disconnected from fuzz burn off module, arcing can occur  while  checking  chip  detectors. Damage  to  aircraft  or  personnel  may result. 3.1  Disconnect plug 235P9 from fuzz burn off module (5). 4.  Set and hold GND switch (6) to TEST. NO. 1 and NO. 2 ENG CHIP DET (Without 74) ENG 1 or 2 CHIP DETR (With 74 capsules (7 and 8) shall come on.  XMSN CHIP DET (Without 74) XMSN CHIP DETR (With 74) capsule (9) shall come on.  All TRANSMIS- SION CHIP DETECTOR AND DEBRIS SCREEN indica- tors (3 and 4) shall change to black-and-white fans.  If NO. 1 or NO. 2 ENG CHIP DET (Without 74) ENG 1 or 2 CHIP DETR (With 74) capsule (7 or 8) is out, go to Task 4-7.3.  If XMSN CHIP DET (Without 74) XMSN CHIP DETR (With 74) capsule (9) is out, go to Task 6-2.8.  If any indicator (3) is all-black, go to Task 6-2.9.  If any indicator (4) is all-black, go to Task 6-2.10. GO TO NEXT PAGE 6-32  Change 17







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