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A 737-300/400/500MAINTENANCE MANUAL
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737-300/400/500MAINTENANCE MANUAL
HIGH CONTROL WHEEL FORCE IN ONE DIRECTION WITH HYDRAULIC POWER ON (WHEEL FORCE TO START AILERON MOVEMENT IS OK) (Cont)
OK - Disconnect the left body cables AA and AB at the aileron aft control quad-rant. Disconnect the aileron PCU con-trol rods and the autopilot actuator control rods. Unhook the centering springs from the centering mechanism roller arm. Turn the aileron aft con-trol quadrant by hand and check for friction in the trim and centering mechanism bearings. Also check the roller arm bearing. IF -
OK - Turn the aileron aft control quad-rant by hand and check for friction in the upper shaft bearings and pressure seal of the control quadrant shaft. IF -
damage. IF -autopilot actuator control rod ends for control rod ends and linkages and the OK - Do a check of the aileron PCU
control valve. IF -OK - Do a check of the aileron PCU main
27-31-54/401). the friction is high (AMM 27-31-51/401; trol wheel). Replace the bearings if mittent ratchet while you turn the con-tion in the U-joint bearings is inter-control column for friction (high fric-on the Captain's or First Officer's OK - Do a check of the U-joint bearings
NOT OK - Replace the support bearings in the Captain's or First Officer's control column if there is high fric-tion (AMM 27-31-51/401; 27-31-54/401).
NOT OK - Replace the aileron trim and centering mechanism (AMM 27-11-81/401).
NOT OK - Replace the bearings and the pressure seal if there is unusual friction (AMM 27-11-91/401).
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A 737-300/400/500MAINTENANCE MANUAL
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A 737-300/400/500MAINTENANCE MANUAL
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737-300/400/500MAINTENANCE MANUAL
CONTROL WHEEL CANNOT MOVE FREELY WITH HYDRAULIC POWER ON (Cont)
OK - Do a check of the PCU main control valve for friction. IF -
(AMM 27-11-91/401). and pressure seal as it is necessary quadrant shaft. Replace the bearings and pressure seal of the control Do a check for friction in the bearings valve rods. Turn the control quadrant. and AB. Disconnect the PCU control OK - Disconnect the left body cables AA
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A 737-300/400/500MAINTENANCE MANUAL
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本文链接地址：737-300 400 500 AMM 飞机维护手册 飞行操纵 FLIGHT CONTROLS 1(78)
