G. After the adjustment, disconnect and remove the equipment.
S 862-016-N00
(1)
Move the Hydraulic Flow Control Valve to NEUTRAL (middle position).
S 862-017-N00
(2)
Lift and turn the Hyrdaulic Pressure Adjustment Knob counterclockwise towards OFF (MINUS) to stop.
S 862-018-N00
(3)
Turn the Air Supply Valve to CLOSED (perpendicular to flow).
S 022-019-N00
(4)
Disconnect the air supply.
S 862-020-N00
(5)
Move the Hydraulic Flow Control Valve from A to B a few times to bleed any pressure in the hoses.
S 902-021-N00
(6)
Disconnect the hoses from the actuator and install protection covers to the ends.
TASK 75-32-01-802-022-N00
3. Pump Operation - Electric Motor Driven (Fig. 202)
______________________________________
A. Check the hoses.
S 212-023-N00
(1) Make sure the return hose is connected to the return adapter of the actuator.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
75-32-01
ALL ú ú N01 Page 204 ú Feb 15/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
MOTOR
FLOW CONTROL HANDLE
Hydraulic Pump (Pnuematic Motor Driven) Figure 202
K04148
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
75-32-01
ALL ú ú N01 Page 205 ú Feb 15/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 212-024-N00
(2)
Make sure the pressure hose A is connected to the pressure adapter of the actuator.
S 412-025-N00
(3)
Install a No. 6 cap to the B1 and B2 pressure port adapters (not used) on the pump.
S 862-026-N00
(4)
Tighten the caps with a wrench.
NOTE:____Do not use aluminum or plastic dust covers. Make sure you use fittings that will seal the adapters if pressurized.
B. Service the pump reservoir.
S 012-027-N00
(1)
Remove the reservoir fill plug.
S 612-028-N00
(2)
If you cannot see the fluid level, service the pump as follows:
(a)
Add clean filtered Calibrating Fluid (P03-003) until full.
(b)
Install the fill cap.
C.
Before you connect the pump to the power supply, set the controls and valves.
S 862-029-N00
(1)
Turn the Power Supply Switch to OFF.
S 862-030-N00
(2)
Turn the Supply Valve B and Bypass Valve B clockwise to CLOSED to stop.
S 862-031-N00
(3)
Turn the Supply Valve A and Bypass Valve A to OPEN (counterclockwise approxiamtely 10 turns).
(4)
Turn the Gauge Valve to the A position.
S 862-033-N00
(5)
Move the Hydraulic Flow Control Valve to the Neutral (middle) position.
S 862-032-N00
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
75-32-01
ALL ú ú N01 Page 206 ú Feb 15/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
D.
E.
F.
G.
A
747-400 MAINTENANCE MANUAL
Supply electrical power to hydraulic pump. S 862-046-N00
(1) Connect the power cord to the power supply.
Operate the pump to supply hydraulic pressure to the applicable actuator.
S 862-047-N00
WARNING:_______ MAKE SURE ALL PERSONS AND TOOLS ARE AWAY FROM THE MECHANICAL
PARTS OF THE SYSTEM THAT YOU ARE ADJUSTING. WHEN YOU START THE
PUMP, THE ACTUATOR CAN MOVE. IF YOU DO NOT DO THIS, YOU CAN
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 大气 AIR 2(57)
