What was found
UPON LANDING GEAR RETRACTION, THERE IS A LOUD "CLUNKING/THUMPING" SOUND WITH ASSOCIATED SHAKING. THE SOUND OCCURS AT THE BEGINNING OF THE RETRACTION SEQUENCE, AS THE GEAR LEVER IS MOVED TO THE UP POSITION. NOISE AND VIBRATION ARE LIKELY LOUD ENOUGH FOR A PASSENGER TO HEAR/FEEL. GEAR EXTENSION IS NORMAL. THERE ARE NO OTHER ABNORMAL INDICATIONS. FOUND FWD AND AFT MOUMENT OF THE NLG COMING FROM AFT ACTUATOR ELASTOMERS R & R NOSE LANDING ELASTOMERS IAW MM 32-30-03. OPS CHECK GOOD.