B.  
References

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

 (2)  
24-22-00/201, Electrical Power

 (3)  
32-00-01/201, Flight Controls Lock Assemblies (2 Required)

 C.  
Access

 (1)  
Location Zones
 1-2 Control Cabin
 2-16 Left Main Wheel Well
 2-17 Right Main Wheel Well

 D.  
Pressurize rudder hydraulic systems A and B.

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A 737-300/400/500MAINTENANCE MANUAL

Rudder Power Control Switches
Figure 201

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737-300/400/500MAINTENANCE MANUAL
 S 862-004
 WARNING:_______ PRESSURIZATION OF RUDDER HYDRAULIC SYSTEM A AND B WILL SUPPLY
 POWER TO THE FLAPS, GROUND SPOILERS, FLIGHT SPOILERS, AILERONS
 AND ELEVATOR SYSTEMS.  MAKE SURE YOU ISOLATE THE SYSTEMS AND
 CONTROLS WHICH MUST NOT OPERATE TO PREVENT MOVEMENT OF
 COMPONENTS WHICH CAN CAUSE INJURY TO PERSONS OR DAMAGE TO

 EQUIPMENT.
 (1)
Supply electrical power (Ref 24-22-00).

 S 212-005

 (2)
Make sure the hydraulic reservoirs are full (Ref 12-12-00).

 S 862-006

 (3)
Close these circuit breakers on the P6 panel (Fig. 201):

 (a)
SHUTOFF VALVES - FLT CONT (2 locations)

 (b)
SHUTOFF VALVES - STBY RUD

 S 862-007
 (4) Set the parking brake.
FLIGHT CONTROLS LOCK ASSEMBLY F80049-12
FLIGHT CONTROLS
SEE A SHUTOFF VALVE
3
4
7 1 5 2
6
FLIGHT CONTROLS A OR B HYDRAULIC MANUAL OVERRIDEMODULAR PACKAGE LEVER SHOWN IN OFF POSITION (POSITION 2)
A
Flight Controls Hydraulic Module Lock Installation
Figure 202

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A
737-300/400/500MAINTENANCE MANUAL
 S 862-001
 (5)
Install the ground lock assemblies in the nose gear (Ref 32-00-01).

 S 862-008

 (6)  
Set the ELEC 2, HYD PUMPS A or the ELEC 1, HYD PUMPS B switches on the forward overhead panel to ON.

 S 862-009

 (7)  
Set the FLT CONTROL A and B switches on the forward overhead panel to ON.

 NOTE: To pressurize system A or B separately, set applicable FLT
____
 CONTROL A or B switch.

 E. Put the Airplane Back to Its Usual Condition
 S 862-010
 (1)  
Set the ELEC 2, HYD PUMPS A or the ELEC 1, HYD PUMPS B switches on the forward overhead panel to OFF.

 S 862-011

 (2)  
Remove electrical power if it is not necessary (Ref 24-22-00).

STANDBY RUDDER ACTUATOR SHUTOFF FLIGHT CONTROLSVALVE LOCK ASSEMBLY F80049-12
MANUAL OVERRIDE LEVER (SHOWN IN OFF POSITION)
SEE A (POSITION 1)
STANDBY HYDRAULIC SYSTEM MODULAR PACKAGE
FWD
A
Standby Hydraulic Module Lock Installation
Figure 203

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737-300/400/500MAINTENANCE MANUAL
　
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