757
MAINTENANCE MANUAL
S 434-060
(33)
Tighten the clamp (26) on the hydraulic hoses (1, 18, 19).
S 434-061
(34)
Connect the electrical connector (7) to the pump depressurization valve (8).
S 614-063
(35)
Make sure the hydraulic reservoir is full (AMM 12-12-01/301).
S 864-064
(36)
Remove the DO-NOT-CLOSE tags and close these circuit breakers on the P11 panel.
(a)
11K14, L ENG PUMP VLV DEPRESS or LEFT ENGINE PUMP DEPRESS
(b)
11K23, R ENG PUMP VLV DEPRESS or R ENG PUMP DEPRESS
S 114-079
CAUTION: QUICKLY CLEAN ALL HYDRAULIC FLUID FROM THE GEARBOX SURFACES.
_______ HYDRAULIC FLUID CAN CAUSE DAMAGE TO THE ENGINE GEARBOX HOUSING.
(37)
Clean all hydraulic fluid leakage from the engine and the engine area (AMM 12-25-01/301).
S 864-066
(38)
Run the engine at idle (AMM 71-00-00/201).
S 784-068
(39)
Make sure the system pressure is between 2850 and 3150 psi.
S 794-069
(40)
Make sure there is no leakage at the hydraulic hose connections to the pump.
(41)
Put the L (R) HYD PUMPS ENG pump switch to the DEPRESS position.
(42)
Let the hydraulic system pressure decrease.
(43)
Make sure the engine-driven pump PRESS indicator light comes on.
S 864-070
S 864-071
S 214-072
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
29-11-05
ALL ú ú 01 Page 409 ú May 28/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 MAINTENANCE MANUAL
S 864-073
(44)
Put the L (R) HYD PUMPS ENG pump switch to the ON position.
S 784-075
(45)
Make sure the system pressure is between 2850 to 3150 psi.
S 214-074
(46)
Make sure the engine-driven pump PRESS indicator light goes off.
S 864-076
(47)
Stop the engine (AMM 71-00-00/201).
S 414-077
(48)
Close the fan cowl panels (AMM 71-11-04/201).
S 444-078
(49)
Do the activation procedure for the thrust reverser (AMM 78-31-00/201).
S 174-019
(50)
If you replace the pump because of mechanical failure, flush the left or right hydraulic system (AMM 29-11-00/201).
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本文链接地址：757 AMM 飞机维护手册 液压 CHAPTER 29 - HYDRAULIC POWER 1(192)
