S 862-031

 (6)  
Motor the engine or operate it at minimum power (AMM 71-00-00/201).

 S 212-032

 (7)  
Make sure the hydraulic system pressure becomes stable at 2850 to 3150 psi.

 TASK 29-11-00-862-033
 5.  Pressurize the Reservoirs in the Main Hydraulic System with an External Air___________________________________________________________________________ Source______
 A.  General
 (1)  
The airplane pneumatic system usually pressurizes the reservoirs when the pneumatic pressure is available (AMM 36-00-00). This procedure pressurizes the reservoir with an external air source.

 B.  
Equipment

 (1)  
Controlled Source of Clean Dry Air, 0 to 100
 psi maximum pressure

 C.  
References

 (1)  
AMM 06-41-00/201, Fuselage Access Doors and Panels

 D.  
Access

 (1)  
Location Zones
 193/194 Wing to Body - Forward Lower Half

 (2)  
Access Panels
 193HL Reservoir Pressurization Module
 194ER Reservoir Pressurizatiion Module

 E.  
Procedure

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 29-11-00
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL

 S 862-320
 WARNING:_______ DO THE THRUST REVERSER DEACTIVATION PROCEDURE TO PREVENT
 THE OPERATION OF THE THRUST REVERSER.  THE ACCIDENTAL OPERATION
 OF THE THRUST REVERSER CAN CAUSE INJURY TO PERSONS OR DAMAGE TO

 EQUIPMENT.
 (1)  
Do this procedure: Thrust Reverser Deactivation for Ground Maintenance (AMM 78-31-00/201).

 S 862-034

 (2)  
Make sure the reservoir depressurization valve on each system reservoir is in the closed position.

 NOTE: The three hydraulic reservoirs are pressurized at the same
____ time.
 S 012-035
 (3)  Open the left or right access doors, 193HL or 194ER, for the reservoir pressurization module (AMM 06-41-00/201).

SUPPORT BRACKET
RESERVOIR (3 LOCATIONS)

Reservoir Pressurization Module Figure 202
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