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 ALL  ú ú 02.1 Page 204 ú Jul 12/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
 S 862-056
 WARNING: KEEP PERSONS AND EQUIPMENT AWAY FROM ALL CONTROL SURFACES AND
_______ THE NOSE GEAR WHEN HYDRAULIC POWER IS SUPPLIED. THE AILERONS, ELEVATORS, RUDDER, FLAPS, SLATS, SPOILERS, STABILIZER , AND THE NOSE GEAR ARE SUPPLIED WITH POWER BY THE HYDRAULIC SYSTEMS. INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR WHEN HYDRAULIC POWER IS SUPPLIED.
 CAUTION: DO NOT OPERATE THE EDP FOR MORE THAN 2 MINUTES UNLESS THE
_______ APPLICABLE FUEL TANK HAS A MINIMUM OF 1750 LBS (794 KG) OF FUEL IN IT. IF YOU OPERATE THE EDP FOR 2 MINUTES WITHOUT FUEL IN THE TANK, LET THE RESERVOIR GO BACK TO AMBIENT TEMPERATURE BEFORE YOU CONTINUE WITH THE TEST. IF YOU CONTINUE TO OPERATE THE EDP THE HYDRAULIC FLUID CAN GET TOO HOT.
 (3)  Put the applicable system pump switch on the P5 panel in the ON position.
 (a)  
HYD PUMPS A ENG 1

 (b)  
HYD PUMPS B ENG 2

 S 982-015
 (4)  
Motor or operate the applicable engine to keep the hydraulic system pressurized (AMM 71-00-00/201).

 S 212-016

 (5)  
Make sure the hydraulic pressure becomes stable between 2900 and 3200 psig.

 H. Pressurize the Standby Hydraulic System
 S 862-017
 (1)  
Supply electrical power (AMM 24-22-00/201).

 S 862-018

 (2)  
Close these circuit breakers:

 (a)  P6 panel, 1) STBY HYD PUMP NORMAL 2) STBY HYD PUMP (ALT) 3) FLIGHT CONTROL SHUT-OFF VALVES BAT STDBY RUDDER
 S 862-019
 (3)  Put one of these switches, on the P5 panel, in this position:
 (a)  
FLT CONTROL A to the STDBY RUDDER position.

 (b)  
FLT CONTROL B to the STDBY RUDDER position.

 (c)  
ALTERNATE FLAPS to the ARM position.

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 29-15-00
 ú  ALL  ú
 ú ú  ú 02.101 ú BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.  Page 205Jul 12/02 

A
737-300/400/500MAINTENANCE MANUAL
 TASK 29-15-00-862-038
 3.  Remove Power from the A, B, or Standby Hydraulic System_______________________________________________________
 A.  General
 (1)  
You must wait 5 to 10 minutes after you remove power from the hydraulic system for the pressure in the system to bleed down.

 (2)  
Remove the pressure from the reservoir if you will open a hydraulic line (AMM 29-09-00/201).

 B.  References
 (1)  
AMM 12-40-00/201, Cleaning and Washing

 (2)  
AMM 24-22-00/201, Manual Control

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

 (4)  
AMM 71-00-00/201, Power Plant (Operating Procedures)

 C.  Access
 (1)  
Location Zones
 101/102 Control Cabin
 211/213 Left/Right Ram Air Duct

 (2)  
Access Panels
 3303L A/C Access panel (Left)
 3403R A/C Access panel (Right)

 D.  Remove Power from the A or B Hydraulic System when Power is Supplied with a Hydraulic Test Stand
 S 862-020
 (1)
Stop the supply of hydraulic pressure from the test stand.

 S 092-021

 (2)  
Disconnect the test stand from the airplane.

 (3)  
Install dust caps on the connections on the airplane.

 S 412-026

 (4)  
Close the access panel for the air conditioning duct.

 S 032-022
 E.  Remove Power from the A or B Hydraulic System when Power is Supplied with the Electric Motor-Driven Pump [EMDP]
 S 862-028
 (1)  
Put the switch (on the P5 panel) for the EDMP in the OFF position.
　
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