TASK 26− 11 −01 −400−801 Installation of the Engine Primary−Zone Advance Pneumatic Detector 1. General A. The maintenance procedure that follows is for the installation of the engine primary zone advance pneumatic detector (written as the “APD” in these procedures). The APD is installed in the left and right engine nacelles. 2. Job Set− Up Information Subtask 26 − 11 −01 − 946 −002 A. Reference Information REFERENCE DESIGNATION TASK 26 − 11 − 00 − 710 − 801 Operational Test of the Nacelle Fire Detection System 3. Job Set− Up Subtask 26 − 11 −01 − 860 −002 A. Make sure that the aircraft is in the same configuration as in the removal task. 4. Procedure Subtask 26 − 11 −01 −420 −001 Refer to Figure 402. A. Install the APD as follows: NOTE : Make sure that the surfaces are clean with no corrosion, paint, grease, or preservation fluids. (1) Install the saddle clamps (30) on the APD (28). (2) Install the saddle clamps (30) to the aircraft structure with the bolts (25), the washers (26) and the nuts (29). (3) Attach the grommets (19) onto the sensing element (20). (4) Put the grommets (19) and sensing element (20) in the hinged clamps (21). Refer to View F. (5) Close the hinged clamps (21) which lead to the seal assembly (23). (6) Turn the screws attached to the hinged clamps (21) one quarter turn clockwise. (7) Put the sensing element (24) through the seal assembly (23). (8) Install the split seal (22) around the sensing element (24). (9) Attach the grommets (19) to the sensing element (20). (10) Put the grommets (19) and sensing element (20) in the hinged clamps (21). Refer to View F. (11) Close the hinged clamps (21). AIRCRAFT MAINTENANCE MANUAL

MASTER EFFECTIVITY: See Pageblock 26 − 11 − 01 page 401 

# 26 − 11 − 01 Page 406 Dec 05/2005(12) Turn the screws attached to the hinged clamps (21) one quarter turn clockwise. (13) Attach the grommets (5) to the sensing element (4). (14) Put the grommets (5) and the sensing element (4) in the single − loop clamps (1). Refer to View B. (15) Attach the screws (6), washers (2) and nuts (3) to the single − loop clamps (1). (16) Attach the grommets (14) to the sensing element (13). (17) Put the grommets (14) and the sensing element (13) in the single − loop clamps (17). Refer to View D. (18) Attach the screws (15), washers (16) and nuts (18) to the single − loop clamps (17). (19) Attach the grommets (19) to the sensing element (20). (20) Put the grommets (19) and sensing element (20) in the hinged clamps (21). Refer to View F. (21) Close the hinged clamps (21). (22) Turn the screws attached to the hinged clamps (21) one quarter turn clockwise. (23) Attach the grommets (14) to the sensing element (13). (24) Put the grommets (14) and the sensing element (13) in the single − loop clamps (17). Refer to View D. (25) Attach the screws (15), washers (16) and nuts (18) to the single − loop clamps (17). (26) Attach the grommets (11) to the sensing element (10). (27) Put the grommets (11) and the sensing element (10) in the single − loop clamps (7). Refer to View C. (28) Attach the screws (12), washers (8) and nuts (9) to the single − loop clamps (7). (29) Connect the electrical connector (27) to APD (28). 5. Close Out Subtask 26 − 11 −01 − 865 −002 A. Remove the tags and close the circuit breakers that follow: CB PANEL AND CB NO NAME LEFT DC (ESSENTIAL), K7 FIRE DET ENG 1 IND RIGHT DC (ESSENTIAL), J7 FIRE DET ENG 2 IND Subtask 26 − 11 −01 − 941 −001 B. Remove all tools, equipment, and unwanted materials from the work area. Subtask 26 − 11 −01 − 710 −001 C. Do the operational test of the nacelle fire detection system (Refer to TASK 26 − 11 − 00 − 710 − 801 ). AIRCRAFT MAINTENANCE MANUAL

MASTER EFFECTIVITY: See Pageblock 26 − 11 − 01 page 401 

# 26 − 11 − 01 Page 407 Dec 05/2005Subtask 26 − 11 −01 −410 −002 D. Close the access doors/panels that follow: REFERENCE DESIGNATION 412BL L/H NACELLE DOOR 412BR L/H NACELLE DOOR 412ET L/H NACELLE PANEL 422BL R/H NACELLE DOOR 422BR R/H NACELLE DOOR 422ET R/H NACELLE PANEL AIRCRAFT MAINTENANCE MANUAL

MASTER EFFECTIVITY: See Pageblock 26 − 11 − 01 page 401 

# 26 − 11 − 01 Page 408 Dec 05/2005A

A F B C E FWD A

Dwk108a01.cgm 15 Oct 98 G

B

C 12 7 8 9 6 1 2 3

4 5

10 11 LEGEND

1. Single − loop clamp. 2. Washer. 3. Nut. 4. Sensing element. 5. Grommet. 6. Screw. 7. Single − loop clamp. 8. Washer. 9. Nut. 10. Sensing element. 11. Grommet. 12. Screw. AIRCRAFT MAINTENANCE MANUAL

Engine Primary Zone Advance Pneumatic Detector −Removal/Installation Figure 402 (Sheet 1 of 2) MASTER EFFECTIVITY: See Pageblock 26 − 11 − 01 page 401 

# 26 − 11 − 01 Page 409 Dec 05/2005wk108a02.cgm 16 Oct 98 FWD D

E

G F 18 17 16 15

14

27 28

30 26 25 29 19

21 22 23

24 13 LEGEND 13. Sensing element. 14. Grommet. 15. Screw. 16. Washer. 17. Single − loop clamp. 18. Nut. 19. Grommet. 20. Sensing element. 21. Hinged clamp. 22. Split seal. 23. Seal assembly. 24. Sensing element. 25. Bolt. 26. Washer. 27. Electrical connector. 28. APD. 29. Nut. 30. Saddle clamps.

20 AIRCRAFT MAINTENANCE MANUAL

Engine Primary Zone Advance Pneumatic Detector −Removal/Installation Figure 402 (Sheet 2 of 2) MASTER EFFECTIVITY: See Pageblock 26 − 11 − 01 page 401 

# 26 − 11 − 01 Page 410 Dec 05/2005