U. S. A.
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 ALL  ú ú 02 Page 501 ú Jul 12/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
MASTER CAUTION LIGHTMASTER CAUTION LIGHT

MANIFOLD PRESSURE GAUGE
P5 and P7 Instrument Panels
Figure 501

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
BLEED AIR
REGULATOR BLEED AIR
SEE A REGULATOR
SEE B
ELECTRICAL CONNECTOR, D3064
FWD
A
BLEED AIR
SWITCH
SOLENOID

ELECTRICAL CONNECTION
BLEED AIR CONTROLREGULATOR PRESSURE
PORT
PLUG
3 2
DOWNSTREAM BONDING PRESSURE PORT JUMPER
4 SUPPLY PRESSURE PORT
FWD
RIGHT SIDE
1 BLEED AIR REGULATOR INSTALLATION INNER EXTENSION
SHOWN WITHOUT SENSE LINES AND B 1 RING (REF)
ELECTRICAL CONNECTIONS.
2 AIRPLANES WITHOUT MIDDLE PORT PLUG.
3 AIRPLANES WITH MIDDLE PORT PLUG.
4 INSTALLED ON SOME AIRPLANES
Bleed Air Regulator Location
Figure 502

E37081
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
 C.  References
 (1)  
AMM 12-31-01/201, Zone Diagrams

 (2)  
AMM 12-31-91/201, Nacelle and Engine-to-Fairing Access Doors and Panels

 (3)  
AMM 24-22-00/201, Manual Control

 (4)  
AMM 36-05-00/201, Pneumatic System

 (5)  
AMM 36-11-71/401, Engine Bleed Air Overheat Switch

 (6)  
AMM 71-11-04/201, Fan Cowl Panels

 (7)  
AMM 78-31-00/201, Thrust Reverser System

 D.  Access
 (1)  
Location Zones (AMM 12-31-01/201)
 101 Control Cabin
 505 Left Nacelle - Right Half Thrust Reverser
 507 Left Nacelle - Left Strut Area
 605 Right Nacelle - Right Half Thrust Reverser
 607 Right Nacelle - Right Strut Area

 (2)  
Access Panels (AMM 12-31-91/201)
 5731 Left Engine, Access Panel Strut
 5739 Left Engine, Right Half Thrust Reverser Assembly
 5831 Right Engine, Access Panel Strut
 5839 Right Engine, Right Half Thrust Reverser Assembly

 E.  Prepare To Do The Operational Test for the Bleed Air Regulator and the Bleed Air Overheat Switch
 S 865-144
 (1)  
Make sure all of the BLEED switches on the P5-10 Panel are in the OFF position.

 S 865-003

 (2)  
Put the forward thrust lever to the fully-retarded position.

 (a)  Attach a DO-NOT-OPERATE tag to the forward thrust lever.
 S 865-004
 (3)  Make sure the engine start lever is in the CUTOFF position.
 (a)  Attach a DO-NOT-OPERATE tag to the engine start lever.
 S 865-145
 WARNING:_______REMOVE THE PRESSURE FROM THE PNEUMATIC SYSTEM. PRESSURE IN THE PNEUMATIC SYSTEM CAN CAUSE INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT.
 (4)  
Remove the pressure from the pneumatic system (AMM 36-05-00/201).

 (5)  
Open the fan cowl panel (AMM 71-11-04/201).

 S 015-063
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