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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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:
　
中國航空網 m.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：757 AMM 飛機維護手冊 液壓 CHAPTER 29 - HYDRAULIC POWER 2