S 492-071
(7)
Make sure the ground lockpins for the landing gear are installed (AMM 09-11-00/201).
S 172-466
(8)
Flush the hydraulic system:
(a)
Disconnect the pressure hose from the engine-driven pump (EDP).
CAUTION: MAKE SURE YOU USE BMS 3-11 HYDRAULIC FLUID TO FLUSH THE
_______ HYDRAULIC SYSTEM. HYDRAULIC FLUID WHICH DOES NOT AGREE WITH THE BMS 3-11 SPECIFICATION CAN CAUSE CONTAMINATION OF THE HYDRAULIC SYSTEM.
(b)
Connect the pressure hose to the pressure hose of the hydraulic service cart.
(c)
Connect the return hose of the hydraulic service cart to the ground service disconnect on the system return module.
CAUTION: MAKE SURE YOU REMOVE THE TRANSMITTER FOR THE HYDRAULIC
_______ FLUID QUANTITY BEFORE YOU FLUSH THE SYSTEM. HYDRAULIC FLUID THAT HAS CONTAMINATION CAN CAUSE DAMAGE TO THE FLUID QUANTITY TRANSMITTER.
(d)
Remove the transmitter for the hydraulic fluid quantity from the reservoir (AMM 29-33-01/401).
(e)
Install the blanking plate for the reservoir.
(f)
Replace the filter elements in the pressure module
(AMM 29-11-23/201).
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
29-11-00
ALL ú ú 13 Page 223 ú Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
(g)
Operate the hydraulic service cart.
(h)
Pressurize the system to 3000 psig.
(i)
Operate the flight controls quickly in the sequence shown below:
~..............................................................................
| | HYDRAULIC SYSTEM CYCLES |
| CONTROL ............. .... ............................... .......... ...
| SURFACES | NO. 1 | NO. 2 | NO. 3 | NO. 4 |
................................................................................ | 1. ELEVATORS | 10 | 10 | 10 | 10 | ................................................................................ | 2. RUDDER | 3 | 3 | 3 | 3 | ................................................................................ | 3. LATERAL | 6 | 12 | 12 | 12 | ................................................................................ | 4. ELEVATORS | 20 | 20 | 20 | 20 | 2..................…..............…..............…..............…..............1
S 962-078
(9)
On system No. 1, replace the filters for these flight control systems:
(a)
The power control package for the left inboard aileron (AMM 27-11-12/201)
(b)
The power control package for the left outboard aileron (AMM 27-11-13/201)
(c)
The left central control actuator (AMM 27-11-08/201)
(d)
The power control package for the upper rudder (AMM 27-21-17/201)
(e)
The power control package for the left inboard elevator (AMM 27-31-07/201)
(f)
The power control package for the left outboard elevator (AMM 27-31-08/201)
(g)
The central autopilot servo module (AMM 22-12-03/401)
(h)
The lateral autopilot servo module (AMM 22-13-06/401).
S 962-079
(10)
On system No. 2, replace the filters for these flight control systems:
(a)
The power control package for the right inboard aileron (AMM 27-11-12/201)
(b)
The power control package for the left outboard aileron (AMM 27-11-13/201)
(c)
The left central control actuator (AMM 27-11-08/201)
(d)
The power control package for the lower rudder (AMM 27-21-17/201)
(e)
The elevator feel computer (AMM 27-31-14/201)
(f)
The power control package for the left inboard elevator (AMM 27-31-07/201).
(g)
The right autopilot servo module (AMM 22-12-03/401).
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本文鏈接地址：747-400 AMM 飛機維護手冊 液壓 HYDRAULIC 1(31)
