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 1.  General_______
 A.  There are two tasks in this procedure. There is a task for the removal and a task for the installation of the flight controls hydraulic modular package.
 B.  There are two modular packages installed on the airplane. The modular package for the hydraulic system A is found in the left main wheel well. The modular package for the hydraulic system B is found in the right main wheel well.
 C.  Each modular package contains these components:
 (1)  
A check valve

 (2)  
A low pressure warning switch

 (3)  
A compensator cartridge

 (4)  
A spoiler shutoff valve

 (5)  
A flight controls shutoff valve.

 TASK 27-09-21-004-029
 2.  Flight Controls Hydraulic Modular Package Removal_________________________________________________
 A.  References
 (1)  
AMM 29-09-00/201, Hydraulic Reservoir Pressurization System

 (2)  
AMM 29-15-00/201, Hydraulic Systems A, B, and Standby

 B.  
Access

 (1)  
Location Zones
 101/102 Control Cabin - Left/Right
 216/217 Left/Right Main Wheel Well

 C.  
Prepare for Removal

 S 864-002
 (1)  
Do this task to depressurize hydraulic systems A and B: "Hydraulic System A, B or Standby Depressurization" (AMM 29-15-00/201).

 S 864-003

 (2)  
Do this task to depressurize hydraulic system A and B reservoirs: "Hydraulic Reservoirs Depressurization" (AMM 29-09-00/201).

 S 864-006

 (3)  
Open these circuit breakers and attach DO-NOT-CLOSE tags:

 (a)  
P6-2 Circuit Breaker Panel 1) FLIGHT CONTROL SHUTOFF VALVES (two locations) 2) SPOILER SHUT-OFF VALVES 3) IND LIGHTS

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A

737-300/400/500
MAINTENANCE MANUAL

SEE A
LOW PRESSURE WARNING SWITCH
HOUSING
SEE B
SPOILER SHUTOFF VALVE
FLIGHT CONTROLS SHUTOFF VALVE
SYSTEM 
A OR B  2  RETURN FROM 
RETURN  CHECK  1  RUDDER AND 
VALVE  ELEVATOR 

3 4
5 7
1
RETURN FROM
2
AILERONSYSTEM A OR B 6 PRESSURE
PRESS TO SPOILER PRESS TO
RUDDER AND ELEVATOR
COMPENSATOR PRESS TO
CARTRIDGE AILERON
A
Flight Controls Hydraulic Modular Package Figure 401 (Sheet 1)
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
MOUNTING BOLTS
MODULAR PACKAGE
B

Flight Controls Hydraulic Modular Package

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
 D. Remove the Flight controls Hydraulic Modular Package
 S 024-031
 (1)  
Remove the modular package (Fig. 401):

 (a)  
Disconnect the electrical connectors from the valve motors and from the low pressure warning switch on the modular package.

 (b)  
Remove the seven hydraulic tubing connections from the modular package.

 (c)  
Use a container to catch hydraulic fluid that drains from the hydraulic tubing.

 (d)  
Remove the four mounting bolts that attach the modular package to the mounting bracket.

 (e)  
Remove the modular package from the airplane.

 S 534-010
　
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本文鏈接地址：737-300 400 500 AMM 飛機維護手冊 飛行操縱 FLIGHT CONTROLS 1(25)