29-11-25
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A
757 MAINTENANCE MANUAL
E. Procedure
S 434-014
(1)
Remove the cap from the opening on the reservoir.
S 644-015
(2)
Apply hydraulic lubricant or hydraulic fluid to the new O-ring (8) and on the threads of the valve (1).
S 434-016
(3)
Install the new O-ring (8) on the valve (1).
S 424-017
(4)
Install the valve (1) on the reservoir.
S 434-018
(5)
Put the bracket (4) on the valve (1) and on the reservoir.
S 434-019
(6)
Install the bolts (5), the washers (6) and the nuts (7).
S 434-020
(7)
Tighten the bolts (5) to 25-30 pound-inches.
S 424-021
(8)
Install the nut (2) and the washer (3) to hold the valve (1) on the bracket (4).
S 824-022
(9)
Adjust the backup nut to align the valve (1) with the bracket (4).
(10)
Install the pneumatic line on the valve (1).
(11)
Pressurize the hydraulic reservoir (AMM 29-11-00/201).
S 434-023
S 864-024
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757
MAINTENANCE MANUAL
S 794-025
(12)
Make sure there are no leaks of air at the valve (1).
S 414-026
(13)
For the center hydraulic system, close the access panel, 197KL, for the central hydraulic service center (AMM 06-41-00/201).
S 094-027
WARNING: USE THE PROCEDURE IN AMM 32-00-15/201 TO REMOVE THE DOOR LOCKS.
_______ THE DOORS OPEN AND CLOSE QUICKLY AND CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(14) For the left or right hydraulic system, remove the door locks from the landing gear doors and close the doors (AMM 32-00-15/201).
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757 MAINTENANCE MANUAL
HEAT EXCHANGER - REMOVAL/INSTALLATION
_____________________________________
1. General_______
A. This procedure has two tasks. One task removes the heat exchanger. The other task installs the heat exchanger.
TASK 29-11-26-004-001
2. Remove the Heat Exchanger (Fig. 401)_________________________
A. References
(1)
AMM 12-25-01/301, Exterior Cleaning
(2)
AMM 28-11-00/201, Fuel Tanks
(3)
AMM 28-11-01/401, Main Tank Access Doors
(4)
AMM 28-26-00/201, Defueling
(5)
AMM 29-11-00/201, Main (Left, Right, and Center) Hydraulic Systems
B. Access
(1)
Location Zones 541 Main Tank - Rib No. 5 to No. 7 (Left) 641 Main Tank - Rib No. 5 to No. 7 (Right)
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