D. Remove the Reservoir (Fig. 401)
 S 684-005
 (1)  Open the drain valve on the reservoir.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
 29-11-21
 ALL  ú ú 01 Page 401 ú Jan 28/01 
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details. 
A
757 MAINTENANCE MANUAL 
HYDRAULIC RESERVOIR IN THE CENTER SYSTEM 
SEE A 
PRESSURE SUPPORTSWITCH ROD 
1.
 BOLT
2.
 WASHER
3.
 WASHER
RESERVOIR 4. NUT 
SUPPORT BRACKET 
PRESSURE RELIEF VALVE 
PRESSURIZATION LINE 
PRESSURIZATION  
11. BOLT 12. WASHER  VALVE  1  
13. WASHER  
14. NUT  FLUID QUANTITY  
(4 LOCATIONS)  TRANSMITTER  
SUPPLY LINE FOR THE  5. UNION  
ALTERNATING CURRENT  6. O-RING  
MOTOR PUMP  10. O-RING 9. UNION  DRAIN VALVE  RETURN LINE HYDRAULIC  
HYDRAULIC  
RETURN LINE  
2  7. UNION  SUPPLY LINE  
8. O-RING  FOR THE RAM  
AIR TURBINE 
HYDRAULIC RESERVOIR IN THE CENTER SYSTEM A 
1 
HYDRAULIC RESEVOIRS WITH A DEPRESSURIZATION VALVE. 2 
HYDRAULIC RESEVOIRS WITH TWO HYDRAULIC RETURN LINES. 
Hydraulic Reservoir Installation Figure 401 
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
 29-11-21
 ALL  ú ú 01 Page 402 ú May 28/99 
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details. 
A
757 
MAINTENANCE MANUAL
 (2)  S 684-006Drain the fluid from the reservoir into a container. 
 (3)  S 684-007Close the drain valve after the fluid drains from the reservoir. 
 (4)  S 034-008Disconnect the hydraulic supply lines and the hydraulic return lines from the reservoir. 
 (5)  S 034-009Install caps on the hydraulic lines and the openings in the reservoir. 
 (6)  S 034-010Disconnect the tube from the pressure relief valve. 
 (7)  S 034-011Disconnect the reservoir pressurization line. 
 (8)  S 034-012Disconnect the electrical connectors from these components: (a) Fluid quantity transmitter (b) Pressure switch (c) Temperature transmitter. 
 (9)  S 024-013Hold the reservoir while you remove the parts which hold the reservoir. 
 S 024-014
 (10)
 Remove the bolt (1) which connects the support rod to the reservoir.
S 024-015
 (11)
 Remove the bolts (13) which connect the support bracket to the reservoir.
S 024-016
 (12)
 Remove the reservoir.
S 034-017
 (13)
 Remove the unions (5, 7, 9) from the reservoir.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
 29-11-21
 ALL  ú ú 03 Page 403 ú Mar 20/93 
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details. 
A
757 MAINTENANCE MANUAL
 S 034-055
 (14) If the hydraulic reservoir has a depressurization valve installed, do this step:
 
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
本文链接地址:757 AMM 飞机维护手册 液压 CHAPTER 29 - HYDRAULIC POWER 2