(b)
Open the APU cowl door.
(c)
Connect the door support rods.
S 014-036
(3)
Open both of the access doors on the airplane tail cone.
S 024-050
(4)
Remove the aft fairing assembly:
(a) Disconnect the two electrical connectors for the fire detection elements.
NOTE: One electrical connector is for the fire detection
____ element installed on the heat shield. The second electrical connector is for the fire detection element on the exhaust duct muffler (Fig. 401).
(b)
Remove the wiring clamp for each of the two electrical connectors for the fire detection elements.
(c)
AIRPLANES WITH THE DUCT ALIGNMENT ASSEMBLY; Remove the bolts that attach the caps to the drip pan.
(d)
AIRPLANES WITH THE DUCT ALIGNMENT ASSEMBLY;
Remove the caps from the drip pan.
(e)
AIRPLANES WITH THE DUCT ALIGNMENT ASSEMBLY; Remove the bolts that attach the duct alignment assembly to the brackets.
(f)
Remove the bolts and the washers that attach the drip pan to the heat shield (Fig. 401).
(g)
Move the drip pan to a position where it will permit clearance for the removal of the aft fairing assembly.
(h)
Disconnect the bonding jumper from the frame member below the forward end of the heat shield.
CAUTION: REMOVE THE AFT FAIRING ASSEMBLY SLOWLY WHILE IT GOES
_______ THROUGH THE AIRPLANE TAIL CONE. DO NOT PULL THE AFT FAIRING ASSEMBLY IN A STRAIGHT DIRECTION. THIS WILL CAUSE DAMAGE TO THE FIRE DETECTION ELEMENTS. MOVE THE AFT FAIRING ASSEMBLY DOWN AND TO A RIGHT DIRECTION. THIS WILL PERMIT A FULL REMOVAL OF THE AFT FAIRING ASSEMBLY. MAKE SURE THE FIRE DETECTION ELEMENTS DO NOT HIT THE AIRPLANE STRUCTURE. THE FIRE DETECTION ELEMENTS CAN BE DAMAGED.
(i)
Remove the screws that attach the aft fairing to the airplane tail cone (Fig. 401).
(j)
Put two hands (fingers) into the holes of the aft fairing.
(k)
Pull the aft fairing assembly slowly until it disengages from the shroud bellmouth.
(l)
Remove the aft fairing assembly from the airplane tail cone.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
49-81-31
ALL ú ú 02 Page 406 ú Nov 12/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
S 034-010
(5) Remove the exhaust duct muffler from the heat shield
(AMM 49-81-11/401).
TASK 49-81-31-004-011
3. Aft Fairing Assembly Removal (With the APU Removed) (Fig. 401)
____________________________
A. Special Tools and Equipment
(1) F80207-1 Equipment - APU Heat Shield Installation/Removal; composed of the following:
(a)
F80207-8 Assembly - Pusher Plate
(b)
F80207-36 Clip - Spring (4 necessary)
(c)
F80207-13 Assembly - Flange (2 necessary)
(d)
F80207-12 Assembly - Flange Retainer (2 necessary)
(e)
F80207-2 Assembly - Reaction Plate
(f)
F80207-5 Assembly - Push Rod
(g)
F80207-46 Stud - Threaded (10 necessary)
(h)
F80207-47 Nut - Lock (10 necessary)
B. References
(1)
AMM 49-11-00/401, APU Power Plant
(2)
AMM 49-81-11/401, Exhaust Duct Muffler
C. Access
(1)
Location Zones
101 Control Cabin, LH
205 Electronic Compartment
703 APU Compartment
704 Tail Cone
(2)
Access Panels
1201 Electronic Equipment Access Door
3801 Tail Cone Access Door
3802 Tail Cone Access Door
3803 APU Exhaust Duct
3804 APU Cowl Door
D. Procedure
S 864-054
(1) Set the switch and the circuit breaker:
(a)
Set the APU master switch on the P5 forward overhead panel to the OFF position and attach a DO-NOT-OPERATE tag.
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