4. Procedure
_________
 (Ref. Fig. 401/TASK 49-81-42-991-001) Subtask 49-81-42-020-050
 A. Removal of the Hot Nozzle and Bellows.
 (1)
 Remove the clamp (2).

 (2)
 Remove the hot nozzle (1) from the exhaust muffler (5).

 (3)
 Remove the clamp (4) and the bellows (3).

 (4)
 Examine the piston ring (6) for damage or wear. If the piston ring is found to defective, replace the exhaust muffler (Ref. TASK 49-81-41-000-001) and (Ref. TASK 49-81-41-400-001).

 (5)
 Examine the hot nozzle (1) and the bellows (3) for damage, chafing marks or cracks. Replace if found to be defective.

 5. Close-up
________

 Hot Nozzle and Bellows
 Figure 401/TASK 49-81-42-991-001

 CES  TASK 49-81-42-400-001

 Installation of the Hot Nozzle and Bellows (GTCP 36-300)
 1. Reason for the Job
__________________
 Self Explanatory
 2. Job Set-up Information
______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific access platform 3.5 m (11 ft. 6 in.) No specific Torque Wrench : range 0.00 to 1.20 m.daN
 (0.00 to 9.00 lbf.ft)
 B. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
24-42-00-861-001 Energize the Ground Service Network from the External Power 24-42-00-862-001 De-energize the Ground Service Network Supplied from the External Power 29-00-00-864-001 Put the Related Hydraulic System in the Depressurized Configuration before Maintenance Action 29-14-00-614-002 Pressurization of the Hydraulic Reservoirs through
 the Ground Connector 49-81-41-000-001 Removal of the Exhaust Muffler (GTCP 36-300) 49-81-41-400-001 Installation of the Exhaust Muffler (GTCP 36-300) 52-41-00-010-001 Open the APU Doors for Access 52-41-00-410-001 Close the APU Doors after Access 52-41-18-000-001 Removal of the APU Exhaust Access-Fairing 317AL 52-41-18-400-001 Installation of the APU Exhaust Access-Fairing 317AL 49-81-42-991-001 Fig. 401

 3. Job Set-up
__________ Subtask 49-81-42-860-054
 A. Aircraft Maintenance Configuration
 (1)
 Energize the ground service network
 (Ref. TASK 24-42-00-861-001).

 (2)
 On the panel 25VU make sure that the APU MASTER SW p/bsw is OFF.

 (3)
 Make sure that there is a warning notice in the cockpit to tell persons not to start the APU.

 (4)
 Make sure that hydraulic systems are depressurized
 (Ref. TASK 29-00-00-864-001).

 (5)
 Make sure that the APU exhaust access-fairing 317AL is removed (Ref. TASK 52-41-18-000-001).

 (6)
 Make sure that the exhaust muffler is removed (Ref. TASK 49-81-41-000-001).

 Subtask 49-81-42-865-051
 B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------121VU APU/APU/CTL 2KD L42 121VU APU/ECB/SPLY 1KD L41
 Subtask 49-81-42-010-053
 C. Get Access
 (1)
 Put the access platform in position below the APU access doors 315AL and 316AR.

 (2)
 Open the APU access doors 315AL and 316AR (Ref. TASK 52-41-00-010-001).

 (3)
 Set the LIGHT SW 11LJ to the ON position.

 4. Procedure
_________ (Ref. Fig. 401/TASK 49-81-42-991-001) Subtask 49-81-42-420-050
 A. Installation of the Hot Nozzle and Bellows.
 (1)
 Install the bellows (3) on the exhaust muffler (5).

 (2)
 Install the clamp (4) on the bellows (3).

 (3)
 TORQUE the clamp (4) to between 0.2 and 0.22 m.daN (17.69 and 19.46 lbf.in).

 (4)
 Install the hot nozzle (1) on the exhaust muffler (5).

 (5)
 Put the drain line (7) in the six o'clock position.

 (6)
 Install the clamp (2) on the bellows (3).

 (7)
 TORQUE the clamp (2) to between 0.2 and 0.22 m.daN (17.69 and 19.46 lbf.in).

 (8)
 Install the exhaust muffler (Ref. TASK 49-81-41-400-001)

 5. Close-up
________ Subtask 49-81-42-410-050
　
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