49-52-13
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / GTCP85-129 SERIES /737-300/400/500/ ENGINES/MAINTENANCE MANUAL ////////////////////////
(3)  S 434-011Connect the bleed air line to the check valve for the fuel sensing flow control.
 (4)  S 434-013Connect the pressure line for the pneumatic actuator to the reducer.
 (5)  S 434-014Install the upper shroud (AMM 49-12-31/401).
 NOTE:____ The bleed air duct is connected to the upper shroud and the bleed air valve during the upper shroud installation.

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 49-52-13
 ALL  ú ú 01 Page 404 ú Nov 15/95
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
APU DUCT SEAL - REMOVAL/INSTALLATION
____________________________________
 1.  General
_______
 A.  This procedure gives the tasks to remove and to install the four APU duct seals. The APU duct seals are installed on the housing for the bleed air duct. To get to the APU duct seals, you must remove the APU power plant.
 TASK 49-52-15-004-001
 2.  APU Duct Seal Removal (Fig. 401)
_____________________
 A.  References
 (1)  AMM 49-11-00/401, APU Power Plant
 B.  Access
 (1)  
Location Zones
 101 Control Cabin, LH
 205 Electronic Compartment
 703 APU Compartment

 (2)  
Access Panels
 1201 Electronic Equipment Access Door
 3804 APU Cowl Door

 C.  Procedure
 S 014-002
 (1)  
Remove the APU power plant (AMM 49-11-00/401).

 S 024-003

 (2)  
Remove the housing from the bleed air duct.

 NOTE: The housing has a duct end flange, two periseals and two
____
 periairseals.

 S 024-016
 (3)  
Remove the duct end flange from the housing.

 (4)
Remove the two periseals and two periairseals from the housing.

 S 214-018

 (5)  
Visually inspect the periseals and periairseals for wear, tear and damage.

 S 024-017
 (a)  If you find signs of wear, tear and/or damage, replace the periseal and/or periairseal.
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 ALL  ú ú 01 Page 401 ú Mar 15/97
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / GTCP85-129 SERIES /737-300/400/500/ ENGINES /MAINTENANCE MANUAL ////////////////////////
SEEA
BLEED AIR VALVE
BLEED AIR
FWD DUCT
PERISEAL
PERIAIRSEAL
HOUSING
PERIAIRSEAL
PERISEAL
DUCT END FLANGE
A
APU Duct Seal Installation Figure 401
G38474
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
TASK 49-52-15-404-008
 3. APU Duct Seal Installation (Fig. 401)
__________________________
 A. References
 (1) AMM 49-11-00/401, APU Power Plant
 B. Access
 (1)  
Location Zones
 101 Control Cabin, LH
 205 Electronic Compartment
 703 APU Compartment

 (2)  
Access Panels
 1201 Electronic Equipment Access Door
 3804 APU Cowl Door

 C. Procedure
 S 424-019
 (1)
Install the two periairseals and two periseals on the housing.

 S 424-021

 (2)
Install the duct end flange on the housing.

 S 424-022

 (3)
Install the housing on the bleed air duct.
　
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