G39870
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21-21-01
ú ú 13 Page 402 ú Mar 20/97
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A
757
MAINTENANCE MANUAL
SEE A
BUTTERFLY CHECK VALVE
MIX MANIFOLD
BYPASS DUCT
CLAMP
GASKET
WASHER
BOLT
(EXAMPLE)
SWING
CHECK VALVE RUBBER SLEEVE
BOLT GROUND
WASHER CONNECTOR DUCT
(EXAMPLE)
GASKET
AIRPLANE
SKIN
GROUND
CONNECTOR
SPACER
FAIRING
A
Conditioned Air Check Valve Installation
Figure 401A
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù.
GUN 001-004 WITH SB 21-51, ú 21-21-01
AND GUN 005-999 ú ú 14 Page 403 ú Jun 20/93
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A
757 MAINTENANCE MANUAL
(b) Put a DO-NOT-OPERATE tag on the selectors.
S 014-003
(3)
Open the No. 1 cargo door, 821 (AMM 06-46-00/201).
S 014-004
(4)
Remove the aft bulkhead lining of the forward cargo compartment (AMM 25-50-03/401).
S 014-060
(5)
Remove the mix manifold.
(a)
Remove the filter duct from the bottom section of the mix manifold.
(b)
Remove the filter housing.
(c)
Remove the forward muffler from the top section of the mix manifold.
(d)
Remove the top section of the mix manifold.
(e)
Remove the bottom section of the mix manifold from the ground service duct.
(f)
Remove the gasket from the top section of the mix manifold.
D.
Remove the check valve assembly
S 034-005
(1)
Remove the ground connector duct.
(a)
Remove the bolts from the lower flange of the ground connector duct.
(b)
Remove the bolts from the top flange of the ground connector duct.
(c)
GUN 001-004 WITH SB 21-51 AND GUN 005-999; disconnect the bypass duct from the ground connector duct. 1) Loosen the clamp on the ground connector duct. 2) Move the rubber sleeve and the clamp away from the ground
connector duct.
(d)
Remove the ground connector duct.
S 034-006
(2)
Remove the gasket from the top flange.
S 024-019
(3)
GUN 001-004 WITH SB 21-51 AND GUN 005-999;
remove the butterfly check valve.
S 024-023
(4)
Remove the check valve from the inside of the ground connector duct
(a)
Remove the screws from the check valve hinge.
(b)
Pull the check valve out of the ground connector duct.
TASK 21-21-01-404-024
3. Install the Check Valve For The Conditioned Air (Fig. 401)_______________________________________________
A. Consumable Materials
(1) A00027 - Adhesive - Misc, BAC5010, Type 60
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
21-21-01
ALL ú ú 13 Page 404 ú May 20/98
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A
757
MAINTENANCE MANUAL
(2)
A00247 - Sealant - Chromate Type, BMS5-95
(3)
B00148 Solvent - Methyl Ethyl Ketone (MEK), TT-M-261
B.
References
(1)
AMM 06-41-00/201, Fuselage (Major Zones 100 and 200) Access Doors and Panels
(2)
AMM 06-46-00/201, Entry, Service and Cargo Doors (Major Zone 800) Access Doors and Panels
(3) 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：757 AMM 飞机维护手册 空调 AIR CONDITIONING 1(18)
