B. Procedure
S 014-001
(1)
Remove the center panel on the aft bulkhead in the forward cargo compartment to get access to the duct and check valve assembly.
S 034-003
(2)
Remove the band clamps and disconnect the flexible duct from the duct and check valve assembly.
S 034-004
(3)
Disconnect the condensate drain from the duct and check valve assembly.
S 034-005
(4)
Remove the bolts, washers and seals from the lower flange of the duct and check valve assembly.
(5)
Discard the seals.
(6)
Remove the duct and check valve assembly.
S 034-006
S 024-007
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500
MAINTENANCE MANUAL
SEE A CABIN OVERHEAD DISTRIBUTION DUCT TO PASSENGERTO CONTROL CABIN
FROM FORWARD TO PASSENGER CABIN CARGO COMPARTMENT AIR COLLECTOR
ACCESS TO
RECIRCULATION FAN
AIR FILTERS (2)
CONTROL CABIN
RECIRCULATION FAN TEMPERATTURE
PASSENGER CABIN SENSORS
CHECK VALVE RECIRCULATION FAN HOT AIR (LEFT PACK TYP)
COLD AIR
GROUND SERVICE (LEFT PACK TYP)
CONNECTION CHECK VALVE
SEE B (LEFT PACK TYP)
FWD CONTROL CABIN HOT AIR BLEED TO (LEFT SIDE ONLY) MIX MUFF
A
Duct and Check Valve Assembly
Figure 401 (Sheet 1)
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
FLEXIBLE DUCT
CONDENSATE DRAIN
RUBBER STOP
ADJUSTMENT SCREWS
PRESSURE
SKIN
GASKET GAP
SWING
CHECK VALVE
CONNECT HOLE
A 737-300/400/500MAINTENANCE MANUAL
BAND CLAMPS
DUCT AND CHECK VALVE ASSEMBLY
SEE C FAIRING DRAIN HOLE BOLT WASHER SEAL SPRING LOWER FLANGE FWD
B
GROUND SERVICE CONNECTION ACCESS DOOR FAIRING
LATCH
FWD C
Duct and Check Valve Assembly Figure 401 (Sheet 2)
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
TASK 21-21-12-404-008
3. Duct and Check Valve Assembly Installation (Fig. 401)__________________________________________
A. Consumable Materials
(1)
A00027 Adhesive - RTV 174 or RTV 102
(2)
C00048 Primer - RTV 1200, Dow Corning
(3)
B00148 Solvent - Methyl Ethyl Ketone (MEK), TT-M-261
B. References
(1) AMM 21-00-00/201, Air Conditioning
C. Access
(1) Location Zone
210 Air Conditioning Distribution Bay
D. Prepare for the Installation
S 034-009
(1) Remove the gasket and the adhesive with a putty knife or an equivalent tool.
S 114-017
WARNING:_______DO NOT GET SOLVENT IN YOUR MOUTH OR EYES, OR ON YOUR SKIN. DO NOT BREATHE THE FUMES FROM THE SOLVENT. PUT ON PROTECTIVE SPLASH GOGGLES AND GLOVES WHEN YOU USE THE SOLVENT. KEEP THE SOLVENT AWAY FROM SPARKS, FLAME, AND HEAT. SOLVENTS ARE POISONOUS AND FLAMMABLE AND CAN CAUSE INJURY OR DAMAGE.
(2) Clean the mating surfaces with the solvent, Series 90 (AMM 20-30-90/201).
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