S 214-037

 (18)
 Make sure the hydraulic pressure gage on the copilot's panel becomes stable between 2800 and 3100 psi.

 (19)
 Make sure the pump and all of its connections do not have a leak.

 S 794-038
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
 ú
 ú  S 864-047
 ú 
        ú
 CAUTION:_______ THE MINIMUM SEPARATION BETWEEN THE HOSES OF THE SYSTEM B PUMP
 ú  AND ADJACENT WIRE BUNDLES MUST BE 0.50 INCH (12.7 MM) THROUGH
 ú  THE FULL RANGE OF WIRE BUNDLE MOVEMENT.  A SEPARATION OF LESS
 ú  THAN 0.50 INCH (12.7 MM) CAN CAUSE THE WIRE BUNDLE OR HYDRAULIC
 ú  HOSE TO CHAFE WHICH CAN LEAD TO WIRE OR HOSE FAILURE.
 ú
 ú  (20) Make sure the minimum separation between the hoses of the System B
 ú  pump and adjacent wire bundles is 0.50 inch (12.7 mm) when the
 ú  system is pressurized.
 S 864-039
 (21) Put these switches in the OFF position:
 (a)  P5 Panel,
 1)  HYD PUMPS A  ELEC 2
 2)  HYD PUMPS B  ELEC 1
 S 614-040
 (22) Do the servicing procedure for the hydraulic reservoirs
 (AMM 12-12-00/301).

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 HYDRAULIC SYSTEMS A AND B EMDP - ADJUSTMENT/TEST
________________________________________________
 1.  General_______
 A.  You must use the engine generator or the APU generator to do the EMDP Test. You can not do the EMDP test when you use external ground power.
 TASK 29-15-22-705-060
 2.  Hydraulic System A or B EMDP Test_________________________________
 A.  References
 (1)  24-22-00/201, Manual Control
 B.  Access
 (1)  Location Zone
 101 Control Cabin - left
 102 Control Cabin - right

 C.  Procedure
 S 865-001
 (1)  Supply electrical power from the engine or APU (Ref 24-22-00/201).
 S 865-061
 CAUTION: DO NOT OPERATE SYSTEM A OR B EMDP MORE THAN 2 MINUTES IF NO. 1
_______ OR NO. 2 FUEL TANK (RESPECTIVELY) CONTAINS LESS THAN 250 GALLONS (1675 LBS/760 KG) OF FUEL. YOU MUST LET THE RESERVOIR TEMPERATURE DECREASE TO AMBIENT TEMPERATURE BEFORE YOU OPERATE THE PUMP AGAIN. DAMAGE TO THE EQUIPMENT CAN OCCUR.
 (2)  
Set the HYD PUMPS A ELEC 2 and the HYD PUMPS B ELEC 1 switches, on the P5 panel, to the ON position.

 S 865-003

 (3)  
Set the HYD PUMPS A ENG 1 and the HYD PUMPS B ENG 2 switches, on the P5 panel, to the OFF position (if the engines are in operation).

 S 865-004

 (4)  
Set the FLT CONTROL and the SPOILER systems A and B switches, on the P5 panel, to the OFF position.

 (5)
Make sure the pressure of each electric pump is 2925-3100 psig.

 S 865-006

 (6)  
Set the applicable switch, on the P5 panel, to the OFF position to remove electrical power from the system A pump:

 S 715-005
 (a)  The GEN 2 switch (if the engine is your supply of electrical power).
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