(4)
Remove floor panels and/or cargo ceiling liners to inspect right cable run. Spin all pulleys, they should spin freely.
(5)
Reconnect cable and inspect cable run. Check for hangups, deflecting fairleads or grommets and bent pulley brackets.
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3. Aileron and Aileron Trim Trouble Shooting Chart
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TROUBLE PROBABLE CAUSE ISOLATION PROCEDURE REMEDY
Control wheel does not rotate with initial trim knob input and does not re-center within 2 degrees with hydraulic power on At trimmed position, control wheel forces light in one or both directions with hydraulic power on LH body cables AA and AB binding or misaligned, fairleads binding, brackets misaligned, or foreign object obstruction LH body cables excessive tension Centering spring and trim mechanism out of adjustment Roll force transducer wire bundle binding on Captain’s control column Aileron trim mechanism excessive play Transfer mechanism lost motion device out of adjustment Aileron trim mechanism excessive play Check LH body cables for chafing or rubbing. Check for dirt or foreign objects Check cable tension per 27-11-0, Adjustment/Test Check mechanism per 27-11-81, Adjustment/Test Rotate control wheel full CCW. Check that wire bundle is not tight Rotate trim knob. Check trim shaft and trim gearbox control rod movement for worn gearbox or worn or loose parts Check if rig pin A/S-1 can be inserted in base of transfer mechanism Rotate trim knob. Check trim shaft and trim gearbox control rod movement for worn gearbox or worn or loose parts Repair or replace components as necessary Adjust cables as necessary Adjust mechanism as necessary Loosen as necessary (22-11-111, Roll Control Wheel Steering Force Transducer – Adjustment/Test) Replace components as necessary (27-11-81, Removal/Installation) Adjust LH & RH body cables AA & AB per 27-11-0, Adjustment/Test Replace components as necessary (27-11-81, Removal/Installation)
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AILERON AND AILERON TRIM CONTROL SYSTEM - MAINTENANCE PRACTICES
1. General
A. Hydraulic systems A and B must be depressurized prior to performing maintenance on aileron control system components. This is to prevent injury to personnel, resulting from inadvertent operation of the control system while maintenance is being performed. Care must be exercised to locate maintenance stands and items of ground equipment beyond the limits of control surface travel.
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