38-32-00
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 B. References
 (1)  
AMM 05-51-91/201, Excessive Cabin Pressure Leakage Condition

 (2)  
AMM 21-31-00/201, Pressurization Control System

 C. Access
 (1)  Location Zone
 200 Passenger Cabin

 D. Procedure
 S 865-164
 CAUTION:  DO NOT PRESSURIZE THE PASSENGER CABIN TO MORE THAN
_______ 19 PSI ABSOLUTE (APPROXIMATELY 4 PSI ABOVE AMBIENT). A PRESSURE THAT IS MORE THAN 19 PSI ABSOLUTE WILL CAUSE DAMAGE TO THE OXYGEN EQUIPMENT.
 (1)  
Pressurize the passenger cabin to 3 psi more than the ambient pressure (AMM 05-51-91/201 and AMM 21-31-00/201).

 S 785-119

 (2)  
Keep the cabin pressure at 3 psi for five minutes.

 S 215-120

 (3)
Look for leakage from the waste system component being tested.

 S 845-121

 (4)  
Return the cabin pressure to ambient pressure.

 TASK 38-32-00-785-123
 8.  Vacuum Fixture Test (Fig. 501)___________________
 A. General
 (1)  
The vacuum fixture test is optional to the cabin pressurization test.

 (2)  
The vacuum test fixture, G38005, with the correct adapter may be used on either the forward or aft service panel.

 (3)  
The vacuum test fixture, F73010-27, is designed for use with the forward service panel.

 B. Equipment
 (1)  
Vacuum test fixture, G38005, with vacuum source, gage and vacuum relief valve

 (2)  
Vacuum test fixture, F73010-27, with vacuum source, gage and vacuum relief valve

 (3)  
Compressed air source (shop air) - 50 psi minimum

 (4)  
Ear plugs or headset - for protection from the air noise

 C. Consumable Materials
 (1)  D00335, High Vacuum Grease, Silicon
 D. Access
 (1)  Access Panels
 1104 Forward Toilet Service Panel
 1502 Aft Toilet Service Panel

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 38-32-00
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
SEE A
SEAL ASSEMBLY
SHUTOFF/VENT VALVE
PUMP ASSEMBLIES (SECOND PUMP USED IFADDITIONAL SUCTION REQUIRED)
____TEST FIXTURE
NOTE: G38005 FOR USE WITH BOTH FWD AND AFT SERVICE PANELS
A 737-300/400/500MAINTENANCE MANUAL
SEE A
SEE B
VACUUM GAGE
RELIEF VALVE
A
Vacuum Test Fixture
Figure 501 (Sheet 1)

SERVICE PANEL AREA
SHUTOFF/VENT VALVE
FIXTURE ASSEMBLY (SHOWN IN USE)
AIR FILTER
ASSEMBLY

F62490
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. VACUUM TEST FIXTURE G38005 ú

 38-32-00
 ú ú 01 Page 511 ú Mar 15/96
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
FORWARD TOILET SERVICE PANEL
ALIGN WITH BOTTOM ROW OF RIVETS
NOTE: TEST FIXTURE F73010 FOR USE WITH FWD SERVICE PANEL
VACUUM GAGE
B

Vacuum Test Fixture
Figure 501 (Sheet 2)

TEST FIXTURE
SHOP AIR
SERVICE PANEL DOOR
BLEED VALVE
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. VACUUM TEST FIXTURE F73010-27 ú

 38-32-00
 ú ú 01 Page 512 ú Mar 15/96
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A
737-300/400/500MAINTENANCE MANUAL
　
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