(4)
Remove the access platform(s). Subtask 49-12-53-860-055
C.
Aircraft Maintenance Configuration.
(1)
De-energize the ground service network (Ref. TASK 24-41-00-862-002)
(2)
Remove the warning notice(s).
(3)
Remove the ground support and maintenance equipment, the special and standard tools and all other items.
VIBRATION ISOLATOR - AFT - REMOVAL/INSTALLATION
_______________________________________________ TASK 49-12-53-000-003 Removal of the AFT Tie-Rods and Vibration Isolator 4055KM (131-9(A)) WARNING : DO NOT TOUCH THE APU UNTIL IT IS SUFFICIENTLY COOL TO PREVENT BURNS
_______ WHEN YOU DO THE MAINTENANCE TASK(S).
WARNING : LOCK THE MECHANISM OF THE ACCESS DOOR 316AR WITH THE PIP PIN WHEN YOU
_______ OPEN THE ACCESS DOOR. THIS WILL PREVENT INJURY.
CAUTION : DO NOT REMOVE MORE THAN ONE APU MOUNT AT A TIME WHEN THE APU IS
_______ INSTALLED. THE APU HOIST AND THE REMAINING TWO MOUNTS MUST SUPPORT THE APU WHEN YOU REMOVE AN APU MOUNT.
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.)
A1-91-265 1 HOIST - MINILIFT
98A49107504001 1 PROTECTOR - THREADS, APU MOUNTING BOLTS
R EFF : 001-049, 101-105, 107-107, 151-199, 49-12-53Page 401 201-210, Config-2 Aug 01/05
CES
B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
24-42-00-861-001 Energize the Ground Service Network from the External Power 29-00-00-864-001 Put the Related Hydraulic System in the Depressurized
Configuration before Maintenance Action 49-00-00-480-003 Installation of the APU Hoist Tool (131-9(A)) 52-41-00-010-001 Open the APU Doors for Access 52-41-21-000-001 Removal of the APU Access Door 315AL 52-41-22-000-001 Removal of the APU Access Door 316AR and the related
Door Mechanism 49-12-53-991-003 Fig. 401
3. Job Set-up
__________
Subtask 49-12-53-860-056
A. Aircraft Maintenance Configuration
(1)
Energize the aircraft electrical circuits
(Ref. TASK 24-42-00-861-001).
(2)
On the panel 25VU make sure that the APU MASTER SW p/bsw is OFF.
(3)
Put the warning notices on panel 25VU to tell persons not to start the APU.
(4)
Make sure that hydraulic systems are depressurized
(Ref. TASK 29-00-00-864-001).
Subtask 49-12-53-865-057
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
R EFF : 001-049, 101-105, 107-107, 151-199, 49-12-53Page 402 201-210, Config-2 Aug 01/05
CES Subtask 49-12-53-010-052
C. Get Access
(1)
Put the access platform below the access doors 315AL and 316AR.
(2)
Open or remove the APU access doors (Ref. TASK 52-41-00-010-001) 315AL, 316AR (Ref. TASK 52-41-21-000-001) (Ref. TASK 52-41-22-000-001).
(3)
Set the LIGHT SW 11LJ to the ON position.
4. Procedure
_________
(Ref. Fig. 401/TASK 49-12-53-991-003) Subtask 49-12-53-020-052
A. Removal of the Aft Vibration Isolator
(1)
Install the HOIST - MINILIFT (Ref. TASK 49-00-00-480-003).
(2)
Slowly wind the handle on the APU hoist until the APU hoist-cable is in tension.
(3)
Remove the nut (9) and install the PROTECTOR - THREADS, APU MOUNTING BOLTS on the cone bolt.
(4)
Remove and discard the cotter pins (3) and (5).
(5)
Remove the castle nuts (2) and (6), the washers (1) and (7) and the bolts (4)) and (8).
(6)
Remove the tie-rods (12) and (13) from the vibration isolator.
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