What was found
ORD - FLT 4072 - LANDING GEAR AIRGROUND FAIL MSG ON EICAS. COULD NOT MOVE LEVER TO RETRACT RETURNED TO LAND. MESSAGE WENT AWAY AFTER 5 MINUTES. AIRCRAFT RETURNED TO FIELD. INSPECTED NLG CAM CENTERING MECHANISM, MLG STRUT BACKLASH AGAINST PROX SWITCH ON GEAR LEGS WITH NO DEFECTS NOTED. INSPECTED COMPLIED WITH EMB 32-10-02 AND 32-10-01, RETURNED AIRCRAFT TO SERVICE. (M)