49-81-00
ALL ú ú 02 Page 2 ú Nov 15/93
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
EXHAUST
COOLING AIR AND EXHAUST MIXED
APU Exhaust System SchematicFigure 2
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49-81-00
ALL ú ú 01 Page 3 ú Mar 15/92
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
EXHAUST DUCT MUFFLER - REMOVAL/INSTALLATION
___________________________________________
1. General
_______
A. This procedure gives the tasks to remove and to install the exhaust duct muffler. The exhaust duct muffler is a part of the aft fairing assembly. The aft fairing assembly has the aft fairing, exhaust duct heat shield (which is referred to as the heat shield) and exhaust duct muffler. The exhaust duct muffler can be removed with the APU in its position. Also, the exhaust duct muffler can be removed with the APU removed. If the APU is in its position, the aft fairing must be removed (AMM 49-81-31/401). If the APU is removed, it is not necessary to remove the aft fairing.
TASK 49-81-11-004-003
2. Exhaust Duct Muffler Removal (With the APU in Position) (Fig. 401)
_______________________________________________________
A. References
(1) AMM 49-81-31/401, Aft Fairing Assembly
B. Access
(1)
Location Zones
703 APU Compartment
704 Tail Cone
(2)
Access Panels
3801 Tail Cone Access Door
3802 Tail Cone Access Door
3803 APU Exhaust Duct
3804 APU Cowl Door
C. Procedure
S 034-001
(1)
Remove the aft fairing assembly (AMM 49-81-31/401).
S 024-002
(2)
Remove the exhaust duct muffler:
(a)
AIRPLANES WITHOUT THE DUCT ALIGNMENT ASSEMBLY (PRE-SB 49-1101); Remove the bolts and washers that attach the exhaust duct muffler to the heat shield.
(b)
Remove the exhaust duct muffler from the heat shield.
(c)
Remove the fire detection element from the forward end of the exhaust duct muffler.
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49-81-11
ALL ú ú 02 Page 401 ú Nov 15/98
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / GTCP85-129 SERIES /737-300/400/500/ ENGINES /MAINTENANCE MANUAL ////////////////////////
COOLING AIR INTAKE FOR THE EXHAUST DUCT
FELT METAL
AFT
LINER
FAIRING
EXHAUST FIRE DETECTION SEE ADUCT ELEMENT FOR
MUFFLER THE HEAT SHIELD
DRIP PAN
FWD
APU SHROUD
HEAT SHIELD
FIRE DETECTION ELEMENT FOR THE
SEE B EXHAUST DUCT MUFFLER
COOLING AIR INTAKE
FOR THE EXHAUST DUCT
EXHAUST PORT
BONDING
FELT METAL JUMPER
LINER
AFT FAIRING
A1 FIRE DETECTION EXHAUST
ELEMENT FOR DUCT
THE HEAT SHIELD MUFFLER DRIP PAN
CAP FOR THE DRIP PAN
DUCT ALIGNMENT ASSEMBLY APU SHROUDHEAT SHIELD
FIRE DETECTION SEE B
ELEMENT FOR THE EXHAUST DUCT FWD
MUFFLER
EXHAUST PORT
BONDING
AIRPLANES WITHOUT THE
1
JUMPER
DUCT ALIGNMENT ASSEMBLY
AIRPLANES WITH THE A 2
2
DUCT ALIGNMENT ASSEMBLY
Exhaust Duct Muffler Installation
Figure 401 (Sheet 1)
C88077
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