**ON A/C 001-049, 051-099, 101-105, 151-199, 201-218,
36-11-49-991-916 Fig. 603 **ON A/C 106-149, 219-299, 301-399, 401-499,
36-11-49-991-916-A Fig. 603A
**ON A/C ALL
36-11-49-991-917 Fig. 604
36-11-49-991-918 Fig. 605
36-11-49-991-919 Fig. 606
3. Job Set-up
__________
Subtask 36-11-49-941-091
A. Safety Precautions
(1)
On the ENG panel 115VU:
-put a warning notice to tell persons not to start the engine 1(2).
(2)
Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(3)
On the ENG section of the maintenance panel 50VU:
-make sure that the ON legend of the ENG/FADEC GND PWR 1(2) pushbutton switch is off.
-put a warning notice to tell persons not to energize the FADEC 1(2).
Subtask 36-11-49-010-122
B. Get Access
(1)
Open the fan cowl doors (Ref. TASK 71-13-00-010-040):
FOR 1000EM1
437AL, 438AR
FOR 1000EM2
447AL, 448AR
(2)
Put the access platform in position below the engine.
Subtask 36-11-49-040-094
C. Make the thrust reverser unserviceable (Ref. TASK 78-30-00-481-041).
Subtask 36-11-49-010-123
D. Open the thrust reverser doors (Ref. TASK 78-36-00-010-040):
FOR 1000EM1
451AL, 452AR
FOR 1000EM2
461AL, 462AR
Subtask 36-11-49-865-129
E. Open, safety and tag this(these) circuit breaker(s):
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU AIR BLEED/ENG 1/CTL 3HA1 D12 49VU AIR BLEED/ENG 1/MONG 2HA1 D11 122VU AIR BLEED/ENG 2/CTL 3HA2 Z23 122VU AIR BLEED/ENG 2/MONG 2HA2 Z22
4. Procedure
_________
Subtask 36-11-49-210-062
A. Do a Visual Inspection of the Pneumatic System Ducts, Hoses and Tubes (Ref. Fig. 601/TASK 36-11-49-991-914, 602/TASK 36-11-49-991-915)
**ON A/C 001-049, 051-099, 101-105, 151-199, 201-218,
(Ref. Fig. 603/TASK 36-11-49-991-916)
**ON A/C 106-149, 219-299, 301-399, 401-499,
(Ref. Fig. 603A/TASK 36-11-49-991-916-A)
**ON A/C ALL
(Ref. Fig. 604/TASK 36-11-49-991-917, 605/TASK 36-11-49-991-918, 606/TASK 36-11-49-991-919)
-------------------------------------------------------------------------------INSPECT/CHECK MAXIMUM REMARKS SERVICEABLE LIMITS -------------------------------------------------------------------------------
1. Examine the Pneumatic System Flexible Duct Joint Assembly (Pylon Interface Duct), look for: (Ref. Fig. 601/TASK 36-11-49-991-914)
Pneumatic System Flexible Duct Joint Assembly
Figure 601/TASK 36-11-49-991-914
Mid Stage Tee and Elbow Duct Assemblies
Figure 602/TASK 36-11-49-991-915
Upper High Pressure Manifold Duct Assembly
Figure 603/TASK 36-11-49-991-916
Upper High Pressure Manifold Duct Assembly
Figure 603A/TASK 36-11-49-991-916-A
Center High Pressure Manifold Duct Assembly
Figure 604/TASK 36-11-49-991-917
Lower High Pressure Manifold Duct Assembly
Figure 605/TASK 36-11-49-991-918
Pneumatic System Hose and Tube Assemblies
Figure 606/TASK 36-11-49-991-919
-------------------------------------------------------------------------------INSPECT/CHECK MAXIMUM REMARKS SERVICEABLE LIMITS -------------------------------------------------------------------------------
A. Wrinkles in bends
B. Dents
C. Flat areas
D. Nicks, Scratches, Chafing in Straight Section Maximum depth must be less than 5 percent of the duct diameter.
Maximum depth must be less than 20 percent of the tube outside diameter. Maximum radius of the dent must be less than 2 times the duct wall thickness. Maximum of 4 dents per each one foot (305 mm) of duct. Minimum distance of 1.0 inch (25.4 mm) between dents. No limit to dents allowed except in bends, no dents are allowed in bends.
Maximum length must be less than 3 times the outside diameter of the duct. Contour change must be less than 20 percent of the outside diameter of the duct.
Maximum depth must be less than 10 percent of the wall thickness of the duct. There is no limit to the number of nicks, scratches or chafing If the damage is more thanthe allowable limits,replace the duct (Ref. TASK 36-11-49-000-040) and (Ref. TASK 36-11-49-400-040).
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