H. Replace the Hydraulic Fluid for System A
 S 582-133
 (1)  
Do this task: "Raise the Airplane" (AMM 07-11-11/201).

 S 492-149

 (2)  
Connect the pressure line of the test bench to the pressure line of the system A EDP.

 S 862-150
 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.
 (3)  
Operate the test bench to pressurize system A to 3000 psi.

 S 862-026

 (4)  
Retract and extend the main and nose landing gear through one full cycle (Ref 32-32-00/501 and 32-33-00/501). Do these at the same time.

 S 862-027

 (5)  
Set the FLT CONTROL A and SPOILER A switches on the P5 panel to the ON position.

 S 862-028

 (6)  
Operate the elevators through seven full cycles, from down to up to down.

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A
737-300/400/500MAINTENANCE MANUAL
 (7)  S 862-029Operate the nose wheel steering through two full cycles (Ref 32-51-00/501).
 (8)  S 862-030Operate the rudders through two full cycles.
 (9)  S 862-031Set the rudder to the neutral position.
 S 862-032

 (10) Turn the control wheel through five full cycles.
 NOTE: This operates the flight spoilers and the ailerons.
 S 862-033
 (11)
 Set the control wheel to the neutral position.

 S 862-034

 (12)
 Set the FLT CONTROL A and SPOILER A switches on the P5 panel to off.

 S 862-035

 (13)
 Operate the thrust reverser of the No. 1 engine through three full cycles (AMM 78-31-00/501).

 S 862-036

 (14)
 Operate the control lever for the speed brakes through two full cycles.

 S 872-037

 (15)
 Open the bleed valves on each brake (AMM 32-41-00/201) and let a minimum of 2 quarts of fluid bleed from each brake.

 S 862-038

 (16)
 Release the pressure from the test bench.

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737-300/400/500MAINTENANCE MANUAL
 S 092-151
 (17)
 Disconnect the pressure line of the test bench from the pressure line of the system A EDP.

 S 092-152

 (18)
 Disconnect the drain hose from the supply line for the system A EDP.

 I. Replace the Hydraulic Fluid for System B
 S 492-153
 (1)  Connect the pressure line of the test bench to the pressure line of the system B EDP.
 S 862-154
 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.
 (2)  
Operate the test bench to pressurize system B to 3000 psi.

 S 862-043

 (3)  
Push down and hold the TRANSFER VALVE TEST 1 or TRANSFER VALVE TEST 2 switch on the E11 shelf.

 S 862-044

 (4)  
Retract and extend the main and nose landing gear through one full cycle (AMM 32-32-00/501 and AMM 32-33-00/501). Do these at the same time.

 (5)  
Release the TRANSFER VALVE TEST switch.

 S 862-045
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