32-32-93
 ALL  ú ú 02 Page 408 ú Nov 15/97
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 S 414-022
 (13) Install the access panel 8401 on the left wing, or the access panel 8501 on the right wing.
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 32-32-93
 ALL  ú ú 02 Page 409 ú Jul 15/96
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 MAIN GEAR ISOLATION VALVE MODULAR PACKAGE - REMOVAL/INSTALLATION
________________________________________________________________
 1.  General_______
 A.  This procedure has two parts: one for the removal and one for the installation of the isolation valve modular package.
 B.  The isolation valve modular package is installed in the left main gear wheel well.
 TASK 32-32-95-024-001
 2.  Main Gear Isolation Valve Modular Package Removal (Fig. 401)_________________________________________________
 A.  References
 (1)  
29-15-00/201, Hydraulic Systems A, B, and Standby

 (2)  
32-00-01/201, Ground Lock Assemblies

 B.  
Access

 (1)  
Location Zone
 101, 102 Control Cabin
 216 Left Main Wheel Well

 C.  
Removal

 S 494-002
 (1)  
Make sure the ground lock assemblies are installed in the nose landing gear and left and right main landing gear (Ref 32-00-01/201).

 S 864-003

 (2)
Remove pressure from hydraulic system A (Ref 29-15-00/201).

 S 034-004

 (3)
Disconnect the three hydraulic lines from the modular package.

 S 034-005

 (4)  
Put caps on the hydraulic lines for protection.

 (5)  
Remove the handle stop bracket from the modular package.

 (6)  
Remove the isolation valve modular package.

 S 034-008

 (7)  
Remove the hydraulic unions from the hydraulic ports in the modular package.

 S 034-009

 (8)  
Put plugs in the hydraulic ports of the modular package for protection.

 S 034-006
 S 024-007
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 32-32-95
 ú ú 01 Page 401 ú Nov 15/92
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
SEE A
ISOLATION VALVE MODULAR PACKAGE
LEFT MAIN GEAR ISOLATION VALVE
VALVE HANDLE (2 LOCATIONS) (SHOWN IN THE VALVE OPEN POSITION) HYDRAULIC LINES
RIGHT MAIN GEAR ISOLATION VALVE
HANDLE
STOP
BRACKET
MODULAR PACKAGE ATTACHMENT BOLT
MODULAR PACKAGE
(3 LOCATIONS)
MOUNTING BRACKET
FWD
INBD
A
Main Gear Isolation Valves Modular Package Installation Figure 401
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH ISOLATION VALVES ú

 32-32-95
 ú ú 02 Page 402 ú Nov 15/92
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 TASK 32-32-95-424-010
 3. Main Gear Isolation Valve Modular Package Installation (Fig. 401)
______________________________________________________
 A. References
 (1)  
29-15-00/201, Hydraulic Systems A, B, and Standby

 (2)  
32-00-01/201, Ground Lock Assemblies

 B.
Access

 (1)  
Location Zone
 101, 102 Control Cabin
 216 Left Main Wheel Well

 C.
Installation

 S 434-011
 (1)  Remove the plugs and install hydraulic unions in the hydraulic ports of the modular package.
　
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