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No specific black light No specific bright light source No specific circuit breaker(s) safety clip(s) No specific degreaser No specific steam cleaner No specific access platform 3.5 m (11 ft. 6 in.)
 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 49-00-00-860-005 APU Start by External Power (APS 3200) 49-00-00-860-006 APU Shutdown by External Power (APS 3200) 52-41-00-010-001 Open the APU Doors for Access 52-41-00-410-001 Close the APU Doors after Access 21-00-00-615-001 Decontamination of the Environmental Control System
 (ECS) when the Temperature is below 24 deg.C (APU) (for corrective action)
 21-00-00-615-002  Decontamination of the Environmental Control System (ECS) when the Temperature is above 24 deg.C (APU) (for corrective action)  -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------

49-11-11-000-003 49-11-11-400-003 49-16-00-100-002 49-16-00-210-002
49-16-45-000-002 49-16-45-400-002 49-17-41-400-002 49-52-53-000-001 49-52-53-400-001 49-81-41-000-002 49-81-41-400-002 49-90-00-600-004
3. Job Set-up
__________ Subtask 49-00-00-860-107
Removal of the Power Plant (APU) (APS 3200) (for
 corrective action)
Installation of the Power Plant (APU) (APS 3200) (for
 corrective action)
Cleaning of the APU Air Intake System (APS 3200) (for
 corrective action)
Detailed Inspection of APU Air Intake, Diffuser
 Elbow, Seals and Felt Metal (APS 3200) (for
 corrective action)
Removal of the Air Intake Diffuser and Elbow (APS
 3200) (for corrective action)
Installation of the Air Intake Diffuser and Elbow
 (APS 3200) (for corrective action)
Installation of the Drain Tank (APS 3200) (for
 corrective action)
Removal of the PMG and Cooling Fan Assembly (8055KM)
 (APS 3200) (for corrective action)
Installation of the PMG and Cooling Fan Assembly
 (8055KM) (APS 3200) (for corrective action)
Removal of the Exhaust Muffler (APS 3200) (for
 corrective action)
Installation of the Exhaust Muffler (APS 3200) (for
 corrective action)
Check Oil Level and Replenish (APS 3200) (for
 corrective action)

 A. Aircraft Maintenance Configuration
 (1)
 Energize the ground service network
 (Ref. TASK 24-42-00-861-001).

 (2)
 Make sure that the APU MASTER SW p/bsw on the panel 25VU is set to the OFF position.

 (3)
 Make sure that hydraulic systems are depressurized
 (Ref. TASK 29-00-00-864-001).

 

 

 4. Procedure
_________ Subtask 49-00-00-790-056
 A. Test the APU for Oil/Fuel Leaks
 (1)
 Start and operate the APU in the ECS mode (Ref. TASK 49-00-00-860-005).

 (2)
 During APU operation:

 -
do a check for oil smell in the passenger compartment.

 -
do a check for smoke from the APU exhaust.
 NOTE : Oil smell in the passenger compartment is an indication of

 

 

____
 internal and/or external oil leakage.

 Smoke from the APU exhaust is an indication of oil leakage.
 (3)
 Stop the APU (Ref. TASK 49-00-00-860-006).

 (4)
 Put a warning notice in the cockpit to tell persons not to start the APU.

 Subtask 49-00-00-865-119
 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 49-00-00-010-073
 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 control switch 11LJ to the ON position.

 

 Subtask 49-00-00-210-067
 D. APU Internal Oil Leakage
　
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