(5)
 Remove the access platform(s).

R  EFF : 001-049, 101-105, 107-107, 151-199, 49-81-42Page 407 201-210, Config-2 Aug 01/05
 CES  Subtask 49-81-42-865-058

 B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------121VU APU/APU/CTL 2KD L42 121VU APU/ECB/SPLY 1KD L41
 Subtask 49-81-42-860-058
 C. Aircraft Maintenance Configuration
 (1)
 Pressurize the reservoirs of the hydraulic systems.
 (Ref. TASK 29-14-00-614-002).

 (2)
 De-energize the ground service network
 (Ref. TASK 24-42-00-862-001).

 (3)
 Remove the warning notice(s).

R  EFF : 001-049, 101-105, 107-107, 151-199, 49-81-42Page 408 201-210, Config-2 Aug 01/05
 CES  RING SEALING - REMOVAL/INSTALLATION

___________________________________
 TASK 49-81-42-000-002
 Removal of the Sealing Ring (Bellows) (APS 3200)
 WARNING : DO NOT TOUCH THE APU UNTIL IT IS SUFFICIENTLY COOL TO PREVENT BURNS
_______ WHEN YOU DO THE MAINTENANCE TASK(S).
 1. Reason for the Job
__________________
 Self Explanatory
 2. Job Set-up Information
______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific circuit breaker(s) safety clip(s) No specific access platform 3.5 m (11 ft. 6 in.)
 B. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
24-41-00-861-002 Energize the Aircraft Electrical Circuits from the
 External Power 29-00-00-864-001 Put the Related Hydraulic System in the Depressurized
 Configuration before Maintenance Action 49-81-41-000-002 Removal of the Exhaust Muffler (APS 3200) 52-41-00-010-001 Open the APU Doors for Access 52-41-18-000-001 Removal of the APU Exhaust Access-Fairing 317AL 49-81-42-991-002 Fig. 401

 3. Job Set-up
__________ Subtask 49-81-42-860-050
 A. Aircraft Maintenance Configuration
 (1)
 Energize the aircraft electrical circuits
 (Ref. TASK 24-41-00-861-002).

 (2)
 On the panel 25VU, make sure that the APU MASTER SW pushbutton switch is off.

 (3)
 Put 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).

 Subtask 49-81-42-865-053
 B. Open, safety and tag this(these) circuit breaker(s):
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------121VU APU/APU/CTL 2KD L42 121VU APU/ECB/SPLY 1KD L41
 Subtask 49-81-42-010-051
 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)
 Remove the APU exhaust access fairing 317AL(Ref. TASK 52-41-18-000-001).

 (4)
 Remove the exhaust muffler (Ref. TASK 49-81-41-000-002).

 4. Procedure
_________
 (Ref. Fig. 401/TASK 49-81-42-991-002) Subtask 49-81-42-020-051
 A. Removal of the Sealing Ring (Bellows)
 (1)
 Remove the clamp (2).

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

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

 Sealing Ring (Bellows)
 Figure 401/TASK 49-81-42-991-002

 CES  TASK 49-81-42-400-002

 Installation of the Sealing Ring (Bellows) (APS 3200)
 WARNING : DO NOT TOUCH THE APU UNTIL IT IS SUFFICIENTLY COOL TO PREVENT BURNS
_______ WHEN YOU DO THE MAINTENANCE TASK(S).
 1. Reason for the Job
__________________
 Self Explanatory
 2. Job Set-up Information
______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
　
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