(3)  
The removal of the filter

 (4)  
The installation of the filter

 (5)  
The removal of the relief valve

 (6)  
The installation of the relief valve.

 TASK 29-15-81-002-001
 2.  Standby Hydraulic System Module Removal (Fig. 201)_______________________________________
 A.  Standard Tools and Equipment
 (1)  Container to catch hydraulic fluid
 B.  References
 (1)  
12-40-00/201, Cleaning and Washing

 (2)  
29-09-00/201, Hydraulic Reservoir Pressurization System

 C.  Access
 (1)  Location Zone
 215 Keel Beam

 D.  Procedure
 S 862-007
 (1)  
Release pressure from system B and standby hydraulic reservoirs (Ref 29-09-00/201).

 S 862-008

 (2)  
Open these circuit breakers and attach DO-NOT-CLOSE tags:

 (a)  P6-2 Circuit Breaker Panel 1) FLIGHT CONTROL SHUTOFF VALVES STBY RUD
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
SEE A
PRESSURE SWITCH
PRESSURE RELIEF VALVE
SEE B
FILTER SEE C SHUTOFF VALVE FOR
SHUTOFF VALVE FOR
THE LEADING EDGE
THE STANDBY RUDDER
MANUAL LEVER FOR THE SHUTOFF VALVE
FWD
A
Standby Hydraulic System Pressure Module Figure 201 (Sheet 1)
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL

BACKUP RING
O-RING
BACKUP RING (EXAMPLE)
RELIEF VALVE
PRESSURE MODULE HOUSING
PRESSURE RELIEF VALVE
(TURNED)

OUTLET FITTING BACKUP RING O-RING BACKUP RING
PRESSURE MODULE HOUSING
FILTER
C
Standby Hydraulic System Pressure Module
Figure 201 (Sheet 2)

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 (b)  
P6-11 Circuit Breaker Panel
 1) STBY HYD PUMP NORMAL

 (c)  
P6-12 Circuit Breaker Panel
 1) STBY HYD PUMP (ALT)

 S 032-009
 (3)  
Disconnect the electrical connectors from the leading edge flap standby drive shutoff valve, the low pressure switch and the standby rudder actuator shutoff valve.

 S 032-010

 (4)  
Disconnect all the hydraulic lines on the module.

 S 682-011

 (5)  
Drain the hydraulic fluid into a container.

 S 162-012

 (6)  
Clean all hydraulic fluid from the installation area if it is necessary (Ref 12-40-00/201).

 S 432-013

 (7)  
Install plugs to all the hydraulic lines.

 S 432-016

 (8)  
Install caps on the open fittings of the module.

 S 032-014

 (9)  
Remove the mounting bolts.

 S 022-015

 (10)
 Remove the standby pressure module.

 TASK 29-15-81-402-002
 3.  Standby Hydraulic System Module Installation (Fig. 201)____________________________________________
 A. Consumable Materials
 (1)  
D00567 Skydrol Assembly Lube - MCS 352

 (2)  
D00568 Fluid - Hydraulic, BMS 3-11

 B. References
 (1)  
12-12-00/301, Hydraulic Reservoir

 (2)  
24-22-00/201. Manual Control

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