What was found
INCOMING INSPECTION, TWO CRITICAL SHAFTS IN THE MECHANISM HAD ZERO END SHAKE. THE OVERHAUL MANUAL CALLS OUT A MINIMUM END SHAKE OF .0020 INCH. THE ZERO END SHAKE CONDITION IN SIMILAR INSTRUMENTS HAS CAUSED THE POINTERS TO HANG UP IN DESCENT AFTER A 1-1/2 HOUR COLD SOAK AT 35 DEGREES FAHRENHEIT. THE FACTORY HAS INDICATED THAT AN END SHAKE OF .0004 INCH OR LESS WILL CAUSE POINTER HANG-UPS AFTER A COLD TEST.