wheel). IF -ratchet while you turn the control U-joints for friction (an indication of gears, upper column bearings, or First Officer's control wheel bearings, OK - Do a check of the Captain's or gears out of adjustment is continuous
roller arm bearing. IF -mechanism bearings. Also check the friction in the trim and centering trol quadrant by hand and check for roller arm. Turn the aileron aft con-springs from the centering mechanism control rods. Unhook the centering trol rods and the autopilot actuator rant. Disconnect the aileron PCU con-and AB at the aileron aft control quad-OK - Disconnect the left body cables AA
IF -seal of the control quadrant shaft. the upper shaft bearings and pressure rant by hand and check for friction in OK - Turn the aileron aft control quad-
NOT OK - Replace the U-joint bearings in the Captain's or First Officer's control column if there is high friction (AMM 27-11-51/401; 27-11-61/401).
NOT OK - Replace the aileron transfer mechanism (AMM 27-11-61/401).
NOT OK - Replace the bearings or adjust as it is necessary (AMM 27-11-41/401; 27-31-51/401; 27-31-54/401).
NOT OK - Replace the aileron trim and centering mechanism (AMM 27-11-81/401).
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737-300/400/500MAINTENANCE MANUAL
HIGH CONTROL WHEEL FORCE IS NECESSARY TO START AILERON MOVEMENT IN TWO DIRECTIONS (Cont)
OK - Do a check of the aileron PCU control rod ends and linkages and the autopilot actuator control rod ends for damage. IF -
OK - Do a check of the aileron PCU main control valve. Replace the PCU if there is unusual friction in the main control valve (AMM 27-11-71/401).
NOT OK - Replace the bearings and the pressure seal if there is unusual friction (AMM 27-11-91/401).
NOT OK - Replace any parts that are worn, bent or broken (AMM 27-11-101/ 401).
E63342
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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
HIGH CONTROL WHEEL FORCE IN TWO DIRECTIONS WITH HYDRAULIC POWER ON (WHEEL FORCE TO START AILERON MOVEMENT IS OK) (Cont)
gears out of adjustment is continuous OK - Do a check of the Captain's or wheel). IF -ratchet while you turn the control U-joints for friction (an indication of gears, upper column bearings, or First Officer's control wheel bearings,
of the PCU linkage for damages. IF -OK - Do a check of the control rod ends
unusual friction in the main control valve. Replace the PCU if there is OK - Do a check of the PCU main control valve (AMM 27-11-71/401).
NOT OK - Loosen the wire bundle of the roll force transducer (AMM 22-11-111/ 501).
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