What was found
AC EXPERIENCED STRONG VIBRATIONS ON NOSE FLOOR AND RUDDER PEDALS AFTER GEAR RETRACTION. INDICATIONS NORMAL. LOWERED GEAR AND LANDED. VIBRATIONS STOPPED PRIOR TO LOWERING GEAR. FOUND NOSE TIRE/WHEEL UNBALANCED AND NOT TORQUED TO PROPER SPECS. BALANCED NOSE WHEEL /TIRE ASSY IAW MM CHPT 32-41-01. CHECK GOOD. CLEANED, INSPECTED WHEEL BEARINGS, CHECKED GOOD. REPACKED BEARINGS. INSTALLED NOSE WHEEL / TIRE ASSY AND TORQUED IAW MM CHPT 32-41-01. LT MLG DOOR OUT OF RIG. ADJUSTED OPS AND GEAR SWING CHECKS GOOD. REF MM CHPT 32-10-00. BOLT PN: AN5-55 NSN. NUT PN: MS17825-5 NSN.