Oil Change (Drain Method) (131-9(A))
 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 container 10 l (2.6416 USgal)
 No specific access platform 3.5 m (11 ft. 6 in.)

 B. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
12-32-49-281-001 Oil Sampling for Analysis 24-41-00-861-002 Energize the Aircraft Electrical Circuits 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 49-00-00-860-008 APU Start by External Power (131-9(A)) 49-00-00-860-009 APU Shutdown by External Power (131-9(A)) 49-90-00-600-007 Check and Replenish Oil Level (131-9(A)) 49-91-41-200-002 Inspection and Replacement of Oil Filters (8069KM)
 and (8076KM) (131-9(A)) 52-41-00-010-001 Open the APU Doors for Access 52-41-00-410-001 Close the APU Doors after Access 49-90-00-991-006 Fig. 301 49-90-00-991-007 Fig. 302

R  EFF : 001-049, 101-105, 107-107, 151-199, 49-90-00Page 308 201-210, Config-2 Aug 01/05
 CES  3. Job Set-up

__________ Subtask 49-90-00-860-062
 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 p/bsw 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 49-90-00-865-064
 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 49-90-00-010-057
 C. Get Access
 (1)
 Put the access platform below the APU access doors 315AL and 316AR.

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

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

R  EFF : 001-049, 101-105, 107-107, 151-199, 49-90-00Page 309 201-210, Config-2 Aug 01/05
 CES  4. Procedure

_________ (Ref. Fig. 301/TASK 49-90-00-991-006, 302/TASK 49-90-00-991-007) Subtask 49-90-00-612-060
 A. Draining and Changing the Oil
 (1)
 Position the container below the drain plug.

 (2)
 Open the filler cap to vent the APU and allow the oil to drain.

 (3)
 Remove the drain plug and drain the oil into the container. NOTE : If you think that the condition of the drained oil is not

____ correct, do a sampling of the APU oil for analysis (Ref. TASK 12-32-49-281-001).

 (4)
 Install the drain plug.

 (5)
 Change the lube module filters (Ref. TASK 49-91-41-200-002).

 (6)
 Replenish the oil system (Ref. TASK 49-90-00-600-007). NOTE : If you fill the APU with an oil of a different brand or type,

____ you must do the drain and changing procedure twice.

 (7)
 Remove the container.

 5. Close-up
________ Subtask 49-90-00-410-059
 A. Close Access
 (1) Make sure that the work area is clean and clear of tool(s) and other items.
 (2)
 Close the APU access doors 315AL, 316AR (Ref. TASK 52-41-00-410-001). Subtask 49-90-00-865-065

 B.
 Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 1KD, 2KD

R  EFF : 001-049, 101-105, 107-107, 151-199, 49-90-00Page 310 201-210, Config-2 Aug 01/05
 CES  Subtask 49-90-00-790-052
　
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