27-51-82
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
ELECTRICAL CONNECTOR
SEE B
SEE A
VALVE MOTOR  CONNECTOR ELECTRICAL  HOUSING  A  FWD 
SCREWS 
BOLTS 
VALVE 
VALVE CAM  (5 LOCATIONS) 0-RINGS 
Figure 401 Trailing Edge Flap Bypass Valve Installation B 

EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
 S 024-010
 (3)  
Remove the bypass valve assembly:

 (a)  
Remove the fasteners that attach the bypass valve assembly to the structure.

 (b)  
Remove the bypass valve assembly from the airplane.

 TASK 27-51-82-404-011
 3. Trailing Edge Flap Bypass Valve Assembly Installation
_____________________________________________________
 A. Consumable Materials
 (1)  
D00288 Lubricant, Skydrol Assembly - MCS 352

 (2)  
D00148 Hydraulic Fluid, BMS 3-11, Type IV, Class 1

 B.
References

 (1)  
12-12-00/301, Hydraulic Reservoir

 (2)  
27-51-82/501, Trailing Edge Flap Bypass Valve

 (3)  
AMM 29-09-00/201, Hydraulic Reservoir Pressurization System

 C.
Access

 (1)  
Location Zones
 101, 102 Control Cabin
 217 Right Main Wheel Well

 D.
Procedure

 S 424-059
 (1)  
Install the bypass valve assembly (Fig. 401):

 (a)  
Attach the bypass valve assembly to the structure with the fasteners.

 S 434-012
 (2)
Connect the hydraulic lines to the bypass valve assembly:

 (a)  
Remove the caps from the hydraulic lines and ports.

 (b)  
If it is necessary, install the O-rings and unions in the bypass valve: 1) Apply the hydraulic fluid or the assembly lube to the

 O-rings. 2) Install an O-ring and a union in each port of the housing.

 (c)  
Connect the hydraulic lines to the bypass valve assembly.

 S 434-018
 (3)  
Connect the electrical connector to the valve motor.

 E.
Put the Airplane Back to Its Usual Condition

 S 864-019
 (1)
Remove the DO-NOT-CLOSE tags and close these circuit breakers:

 (a)  
P6-2 Panel
 1) ALT TE FLAP DRIVE

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 2) FLAP (SHUTOFF VALVES)
 S 864-020
 (2)  
Do this task: "Restore Airplane To Normal" (AMM 29-09-00/201).

 S 724-022

 (3)  
Do this task: "Trailing Edge Flap Bypass Valve Functional Test" (Ref 27-51-82/501).

 S 614-023

 (4)  
Do this task: "Service Hydraulic Reservoir" (Ref 12-12-00/301).

 TASK 27-51-82-004-024
 4.  Trailing Edge Flap Bypass Valve and Valve Motor Removal_______________________________________________________
 A. References
 (1)  
AMM 29-09-00/201, Hydraulic Reservoir Pressurization System

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

 B.
Access

 (1)  
Location Zones
 101, 102 Control Cabin
 217 Right Main Wheel Well

 C.
Prepare for the Removal

 S 864-025
 (1)  
Do this task to depressurize hydraulic system B: "Depressurize Hydraulic System A, B, or Standby (Ref 29-15-00/201).

 S 864-026

 (2)  
Do this task to depressurize the hydraulic system B reservoir: "Depressurize Hydraulic Reservoir" (AMM 29-09-00/201).
　
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