-
Make sure that the APU BLEED pushbutton switch is released (the ON legend is off),

 -
Make sure that the warning notice to tell persons not to operate the pneumatic system is in position.

 (4)
 On the ENG panel 115VU:

 -Make sure that the warning notice to tell persons not to start the engine 1(2) is in position.

 (5)
 On the HP ground connector:

 -Make sure that the warning notice to tell persons not to pressurize the pneumatic system is in position.

 (6)
 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,

 -
Make sure that the warning notice to tell persons not to energize the FADEC 1(2) is in position.

 (7)
 Make sure that the access platform is in position below the engine.

 Subtask 36-11-49-010-080
 B. Get Access
 (1)
 Make sure that the fan cowl doors are open (Ref. TASK 71-13-00-010-040): FOR 1000EM1 437AL, 438AR FOR 1000EM2 447AL, 448AR

 (2)
 Make sure that the thrust reverser doors are open (Ref. TASK 78-36-00-010-040): FOR 1000EM1 451AL, 452AR FOR 1000EM2 461AL, 462AR

 Subtask 36-11-49-040-068
 C. Make sure that the thrust reverser is unserviceable (Ref. TASK 78-30-00-481-041).
 1EFF : ALL 1 36-11-49Page A412 1 1 Nov 01/04R 1 1 1CES 1

 Subtask 36-11-49-865-069
 D. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
 -------------------------------------------------------------------------------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
_________
 (Ref. Fig. 407/TASK 36-11-49-991-306)
 Subtask 36-11-49-420-056
 A. Installation of the Fifth Stage Elbow Duct
 (1)
 Remove the blanking plugs from the fifth stage elbow duct (25), the IP bleed check valve (5) and the engine port.

 (2)
 Loosely install the fifth stage elbow duct (25) between the IP bleed check valve (5) and the engine port.

 (3)
 Attach the fifth stage elbow duct (25) to the IP bleed check valve

 (5) with a serviceable E-seals (15) and the coupling (10).

 (4)
 Tighten the coupling nuts:

 CAUTION : MAKE SURE THE SMOOTH CIRCULAR SURFACE OF THE COUPLING IS
_______ RADIALLY OUTBOARD FROM THE ENGINE. DO NOT LET THE COUPLING TOUCH ENGINE COMPONENTS OR STRUCTURE. DAMAGE TO THE COMPONENTS OR STRUCTURE COULD OCCUR.
 (a) Tighten the nuts of the coupling (10) sufficiently to hold the duct in position. Do not torque the coupling nut at this time.
 (5)
 Apply a layer of anti-seize compound (Material No. CP2101) to the bolts (20).

 (6)
 Attach the fifth stage elbow duct (25) to the engine port with the bolts (20) and the E-seals (30).