8.10.2 Additional Inspection for In-Situ Trolleys
In addition, for trolleys in-situ, if any of the following defects are found the appropriate action should be taken:
Incorrect size of trolley for the runway beam. Replace with correct size of trolley.
Wrongly adjusted trolley. Re-adjust to correct side clearances between the wheel flanges and the toes of beam, usually 3 mm to 4 mm total clearance (the inspector or installer must seek clarification as to the exact dimensions from the manufacturer). Also ensure that the trolley is correctly aligned centrally with the flange of the runway. (See Figure 8.10.2-1 )
Figure 8.10.2-1 Correct trolley adjustment
Wrongly adjusted anti-tilt device. Re-adjust.
In the case of an incorrect or wrongly fitted hoist, remove and replace or refit as necessary.