**ON A/C 001-049, 101-105, 201-203, 49-11-11-991-011 Fig. 404 R **ON A/C 107-107, 151-199, 204-210, 49-11-11-991-011-A Fig. 404A
R EFF : 001-049, 101-105, 107-107, 151-199, 49-11-11Page 402 201-210, Config-2 Aug 01/05
CES R **ON A/C 001-049, 101-105, 107-107, 151-199, 201-210,
3. Job Set-up
__________
Subtask 49-11-11-860-062
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)
Put the warning notices on panel 25VU to tell persons not to start the APU.
(4)
Make sure that the hydraulic systems are depressurized (Ref. TASK 29-00-00-864-001).
Subtask 49-11-11-865-071
B. Open, safety and tag this(these) circuit breaker(s):
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU APU/FUEL/BLOW OFF/PUMP 2QC B14 121VU APU/OIL/HTR/SPLY 1KT K41 121VU APU/FUEL/BLOW OFF/CTL 1QC K39 121VU APU/FIRE AND OVHT/DET/LOOP A 1WG L43 121VU APU/APU/CTL 2KD L42 121VU APU/ECB/SPLY 1KD L41 121VU APU/AUTO/EXTIG/GND/TEST 30WF L40 121VU APU/FIRE/EXTIG/SQUIB/B 2WF L39 121VU APU/FIRE/EXTIG/SQUIB/A 1WF L38 121VU APU/FIRE/LP VALVE/NORM 4WF M42 121VU APU/FIRE/LP VALVE/STBY 3WF M41 121VU APU/FUEL/LP VALVE/CTL 1QF M40 121VU APU/FUEL/LP VALVE/SPLY 2QF M39 121VU APU/FUEL/PUMP/CTL 3QC M38
Subtask 49-11-11-010-059
C. Get Access
(1)
Put the access platform below the access doors 315AL and 316AR.
(2)
Open the APU access doors 315AL, 316AR. (Ref. TASK 52-41-00-010-001)
(3)
Set the LIGHT SW 11LJ to the ON position.
(4)
Remove the APU access doors 315AL, 316AR (Ref. TASK 52-41-21-000-001) (Ref. TASK 52-41-22-000-001).
NOTE : The removal of the APU is also possible without a removal of
____ the access doors. However, a removal of the doors will:
-
make the access to the APU compartment better.
-
make the installation and use of the hoist tool easier.
-
reduce the risk of injury to the personnel.
-
reduce the risk of damaging the doors with the maintenance platform.
4. Procedure
_________ **ON A/C 001-049, 101-105, 201-203,
Subtask 49-11-11-020-057
A. Disconnection of the APU
(1) Disconnection of the APU Bleed-Air Duct Elbow
(a) Loosen the clamp (6)
(Ref. Fig. 401/TASK 49-11-11-991-010)
NOTE : Let the clamp (6) stay loosely on the bleed-air duct of
____
the APU.
(b) Put the blanking caps on the openings of the bleed-air duct elbow
(7) and the bleed-air duct of the APU.
(2) Remove the oil-cooler outlet duct and put blanking plugs on the oil cooler outlet and oil cooler duct (Ref. TASK 49-52-41-000-003).
R EFF : 001-049, 101-105, 107-107, 151-199, 49-11-11Page 404 201-210, Config-2 Aug 01/05
CES
(3) Disconnect the APU Fuel Line with Vent and Drain Valve from the APU WARNING : OBEY THE FUEL SAFETY PROCEDURES.
_______
CAUTION : PUT PLASTIC CAPS OR PLUGS ON ALL FUEL AND/OR LUBRICATION
_______ SYSTEM COMPONENTS AND LINES. IF YOU USE TAPE, CLOTH, OR METAL CAPS ON THEM, YOU CAN DAMAGE THE APU.
CAUTION : YOU MUST USE TWO WRENCHES AND HOLD THE COMPONENT WHEN YOU
_______ REMOVE/INSTALL THE PIPE COUPLINGS AND/OR UNIONS. THIS PREVENTS DAMAGE TO THE COMPONENT.
(a)
Put the container in position below the fuel control unit and the vent and drain valve (21).
(b)
Remove the blanking cap (22) from the LP fuel inlet vent and drain valve (21).
(c)
Install the ADAPTER - VENT AND DRAIN VALVE, APU to vent and drain valve (21).
(d)
Drain the unwanted fuel into the container.
(e)
Remove the ADAPTER - VENT AND DRAIN VALVE, APU from the vent and drain valve.
(f)
Install the blanking cap (22).
(g)
Removal of the Lockwire: WARNING : CUT, REMOVE AND DISCARD THE LOCKWIRE AS YOU DO THE
_______ TASK. LOOSE LOCKWIRE CAN CUT OR BLIND YOU.
-Remove and discard the lockwire and disconnect the vent and drain valve (21) from the Union Assy (20).
(h)
Put blanking plugs on the disconnected line ends.
(i)
Put the main fuel inlet-pipe in the stowage bracket attached to the firewall of the APU compartment. This will prevent damage during the APU removal.
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