What was found
THE CRITICAL SHAFT END SHAKES WERE CHECKED ON THIS INSTRUMENT. OVERHAUL MANUAL CALLS OUT .002 INCH TO .003 INCH. THESE END SHAKES MEASURED .0010 INCH, .0012 INCH, AND .0003 INCH. THE .0003 INCH END SHAKE COULD CAUSE THE POINTERS TO HANG UP IN THE LOWER TEMP. SUBMITTER STATES ACCORDING TO A FACTORY ALERT SERVICE BULLETIN, A FIX WAS IMPLEMENTED (FAA APPROVED), AND THIS ELIMINATED THE UNDER TOLERANCE CONDITION.