(25)
Make sure the ACMP, in the applicable system, starts immediately.
S 865-029
(26)
Put the applicable HYD DEMAND PUMPS switch, on the overhead panel, P5, in the OFF position.
(27)
Make sure the ACMP, in the applicable system, stops immediately.
S 215-028
S 215-030
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
29-11-19
ALL ú ú 02 Page 503 ú Oct 10/92
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 865-031
(28)
Release the pressure in the hydraulic system (AMM 29-11-00/201).
S 865-032
(29)
Remove electrical power if it is not necessary (AMM 24-22-00/201).
S 085-056
(30)
Remove the jumper from connector DM3108 or DM7202 (as applicabe) on the applicable engine.
S 865-058
(31)
Install connector DM3108 or DM7202 (as applicable) on the fuel metering unit on the applicable engine (AMM 73-21-01/401).
S 035-033
(32)
Disconnect the pressure hose of the hydraulic service cart from the pressure hose of the engine-driven pump.
S 435-034
(33)
Connect the pressure hose to the engine-driven pump
(AMM 29-11-00/201).
S 415-035
CAUTION: MAKE SURE YOU LATCH THE DOORS ON THE TRAILING EDGE FAIRING
_______ CORRECTLY. IF THE DOORS OPEN DURING A FLIGHT, THIS CAN CAUSE DAMAGE TO THE DOORS.
(34)
Close the doors on the trailing edge fairing
(AMM 54-62-00/201).
E.
Alternate Procedure
NOTE: This is an alternate procedure for performing operational test of
____ the ACMP. This procedure uses dry-motoring of engine, instead of using a Hydraulic ground cart. This eliminates the need to connect a hydraulic ground cart to the EDP pressure hose at the engine.
S 865-066
(1)
Supply electrical power (AMM 24-22-00/201).
(2)
Open the doors on the trailing edge fairing (AMM 54-62-00/201).
(3)
Release the pressure in the hydraulic system (AMM 29-11-00/201).
S 015-067
S 865-068
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
29-11-19
ALL ú ú 02 Page 504 ú Jun 15/98
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
S 865-071
(4)
Disconnect connector DM3108 or DM7202 (as applicable) from the fuel metering unit on the applicable engine (AMM 73-21-01/401).
S 865-076
(5)
Put the applicable HYD DEMAND PUMPS switch, on the overhead panel, P5, in the OFF position.
S 215-077
(6)
Make sure the PRESS light, for the applicable demand pump, is on.
S 215-122
(7)
Set the EDP switch to the ON position.
S 865-078
CAUTION: OPERATE ONLY THE SYSTEMS WITH HYDRAULIC POWER WHICH THIS TEST
_______ PROCEDURE TELLS YOU TO OPERATE. KEEP THE TEST TIME TO A MINIMUM. MONITOR THE FLUID LEVEL IN THE HYDRAULIC RESERVOIR CONTINUOUSLY. BECAUSE THE HYDRAULIC FLUID CAN NOT GO BACK TO THE HYDRAULIC SERVICE CART, THE HYDRAULIC RESERVOIR CAN BECOME TOO FULL.
DO NOT OPERATE THE ENGINE STARTER MORE THAN THE SPECIFIED LIMITS IN THE DUTY CYCLE. IF YOU OPERATE THE STARTER MORE THAN THE SPECIFIED LIMITS , YOU CAN CAUSE DAMAGE OT THE STARTER OR
THE GEARBOX.
(8) Dry-Motor the applicable engine. (AMM 71-00-00/201)
(9) S 215-124Increase EDP hydraulic pressure.
S 215-079
(10)
Make sure the hydraulic pressure indication, for the applicable system, on the EICAS display is between 2900 and 3150 psig.
S 865-080
(11)
Put the applicable HYD DEMAND PUMPS switch, on the overhead panel P5, in the AUTO position.
S 215-081
(12)
Make sure the ACMP did not start.
S 215-082
(13)
Make sure the PRESS light, for the applicable demand pump, is off.
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
本文链接地址：747-400 AMM 飞机维护手册 液压 HYDRAULIC 2(33)
