29-11-29
 ALL  ú ú 02 Page 401 ú May 28/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A

757
MAINTENANCE MANUAL

FORWARD FAIRING OF THE RIGHT WHEEL WELL
SEE A
FORWARD FAIRING OF THE LEFT WHEEL WELL
SEE A
INBD
BOLTS (4 LOCATIONS)  FWD 
UNION  HYDRAULIC RELIEF LINE 

RELIEF VALVE
SEE B
FORWARD FAIRING
VALVE
OF THE LEFT WHEEL WELL
(THE FORWARD FAIRING
OF THE RIGHT WHEEL WELL IS OPPOSITE)

UNION
A
FWD OUTBD
HYDRAULIC PRESSURE LINES
RELIEF VALVE (EXAMPLE)
B
Relief Valve Installation Figure 401
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 29-11-29
 ALL  ú ú 02 Page 402 ú May 28/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A

757
MAINTENANCE MANUAL

 S 034-007
 (2)  
Install a cap on the relief valve.

 S 024-008

 (3)  
Remove the bolts which hold the relief valve.

 S 024-009

 (4)  
Remove the relief valve.

 S 034-010

 (5)  
Remove the unions and the O-rings from the relief valve.

 TASK 29-11-29-404-011
 3. Install the Relief Valve (Fig. 401)
________________________
 A. Consumable Materials
 (1)  D00054 Hydraulic System Lubricant - MCS 352
 B. References
 (1)  
AMM 12-12-01/301, Hydraulic Systems

 (2)  
AMM 12-25-01/301, Exterior Cleaning

 (3)  
AMM 29-11-00/201, Main (Left, Right, and Center) Hydraulic Systems

 (4)  
AMM 32-00-15/201, Main Gear Door Locks

 C. Access
 (1)  Location Zones
 143/144 MLG Wheel Well

 D. Install the Relief Valve
 S 644-012
 (1)  
Apply hydraulic lubricant or hydraulic fluid to the new O-rings and the threads of the unions.

 S 434-013

 (2)  
Install the new O-rings on the unions.

 S 434-014

 (3)  
Install the unions on the relief valve.

 (4)  
Hold the relief valve in its position.

 (5)
Install the bolts to hold the relief valve in its position.

 (6)  
Install the hydraulic lines on the relief valve.

 S 424-015
 S 424-016
 S 434-017
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 29-11-29
 ALL  ú ú 02 Page 403 ú May 28/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A

757 MAINTENANCE MANUAL
 E. Put the Airplane Back to Its Usual Condition
 S 864-018
 (1)  Remove the DO-NOT-CLOSE tags and close these circuit breakers on the overhead panel, P11:
 (a)  
11K16, HYDRAULICS ELEC PUMP RIGHT

 (b)  
11K25, HYDRAULICS ELEC PUMP LEFT

 S 614-019
 (2)  
Fill the applicable hydraulic reservoir (AMM 12-12-01/301).

 S 864-020

 (3)  
Pressurize the applicable hydraulic system and the reservoir (AMM 29-11-00/201).
　
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(23)