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737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL 27-51-00-009 TE FLAP SYSTEM - FLAP POWER DRIVE UNIT TE FLAP SYSTEM - FLAP POWER DRIVE UNIT EFFECTIVITY GUN ALL 27-51-00 Page 37 D633A101-GUN Oct 10/2005 BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details. 737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL 27-51-00-009 Purpose The TE flap priority valve and the flow limiter control the flow of hydraulic fluid to the TE flap hydraulic components. The priority valve gives priority of system B hydraulic power to the LE devices over the TE flaps. The flow limiter limits the speed of movement of the TE flaps. Location The TE flap priority valve and the flow limiter are on the ceiling of the MLG wheel well. Physical Description The priority valve is a pressure-operated valve with two positions. If the system B hydraulic pressure is less than 2400 psi, the priority valve moves to the reduced flow position. This reduces the hydraulic flow to the TE flap components. The flow limiter limits the hydraulic fluid flow to 14 gpm. Training Information Point After installation of the priority valve, you must do a functional test of the priority valve. In this test, you operate the TE flaps then monitor the system B hydraulic pressure and the speed of movement of the TE flaps. TE FLAP SYSTEM - FLAP PRIORITY VALVE AND FLOW LIMITER EFFECTIVITY GUN ALL 27-51-00 Page 38 D633A101-GUN Oct 10/2005 BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details. 737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL 27-51-00-010 TE FLAP SYSTEM - FLAP PRIORITY VALVE AND FLOW LIMITER TE FLAP SYSTEM - FLAP PRIORITY VALVE AND FLOW LIMITER EFFECTIVITY GUN ALL 27-51-00 Page 39 D633A101-GUN Oct 10/2005 BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details. 737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL 27-51-00-010 Purpose The TE flap bypass valve prevents the hydraulic operation of the TE flaps during these conditions: * Alternate flap operation (arm switch in arm position) * TE flap skew * TE flaps asymmetry * TE flaps uncommanded motion (UCM). There is more information on these conditions later in this section. Location The bypass valve is on the aft bulkhead of the MLG wheel well. Physical Description The bypass valve is a two position valve that uses 28v dc power from bus 1. The valve has a manual override lever that shows the position of the valve. Functional Description When the bypass valve is in the normal position, it lets hydraulic power from the flap control valve go to the TE flap hydraulic motor. When the bypass valve is in the bypass position, it connects the hydraulic lines on both sides of the hydraulic motor to each other. This stops operation of the hydraulic motor, prevents a hydraulic lock, and lets alternate flaps operation backdrive the hydraulic motor. Training Information Point When you deactivate the TE flap system, you must disconnect the electrical connector and install a lock on the flap bypass valve. This lock holds the manual override lever in the bypass position. TE FLAP SYSTEM - TE FLAP BYPASS VALVE EFFECTIVITY GUN ALL 27-51-00 Page 40 D633A101-GUN Oct 10/2005 BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details. 737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL 27-51-00-011 TE FLAP SYSTEM - TE FLAP BYPASS VALVE TE FLAP SYSTEM - TE FLAP BYPASS VALVE EFFECTIVITY GUN ALL 27-51-00 Page 41 D633A101-GUN Oct 10/2005 BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details. 737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL 27-51-00-011 THIS PAGE IS INTENTIONALLY LEFT BLANK TE FLAP SYSTEM - TE FLAP BYPASS VALVE 27-51-00 Page 42 D633A101-GUN Oct 10/2005 BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details. 737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL Purpose The flap torque tubes transmit power from the TE flap PDU, through the angle gearboxes, to the flap transmissions. The torque tube supports transmit power between two torque tubes in areas where stronger torque tubes are necessary. Location There are 16 torque tubes of different lengths for the flap drive system. These torque tubes are in the MLG wheel well, along the MLG beams, and along the rear spar of both wings. To get access, go through the MLG wheel well, go through removable access panels under the wings, or extend the TE flaps. www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：737NGAMM6
