What was found
(CAN) PILOT REPORTED M/R HUB ASSY STIFF TO FLAP DURING DAILY INSPECTION. UPON INVESTIGATING THE DROOP STOP ASSY WAS FOUND THAT THE ROLL PINS (P/N NAS561C5-14) THAT HOLD THE T-HEAD (P/N 369A1229-3) TO THE PLUNGER (P/N 369A1240-3) HAD WORKED THERE WAY OUT ON 3 ASSY'S. THE ROLL PINS DAMAGED THE PLUNGERS AS WELL AS THE BEARINGS (P/N 369A1237) IN WHICH THE PLUNGERS RIDE IN ON THE 3 LOCATIONS WHEN THEY CAME OUT. ALL THREE PLUNGERS AND BEARINGS REQUIRED REPLACEMENT AND ALL ROLL PINS REPLACED WITH NEW. M/R HUB ASSY HAS TO BE REMOVED FOR THE REPLACEMENT AND RE-INSTALLED.