TECHNICIAN WORKING ON AN MD80 INSPECTION AND LUBRICATION OF THE HORIZ STABILIZER JACKSCREW FAILED TO USE THE REQUIRED ACME THREAD CLEANING TOOL.

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ACCOMPLISHING OF FAA AIRWORTHINESS DIRECTIVE MCM X. THREAD CLEANING TOOL NOT AVAILABLE. ON APR/SUN/05; I MADE A JUDGEMENT CALL TO CLEAN THE JACKSCREW THREADS AND VALLEYS ON ACFT X WITH RAGS. I MADE THIS DECISION BECAUSE THE PROPER THREAD CLEANING TOOL AS PER CARD WAS NOT AVAILABLE. I REALIZE THAT I SHOULD HAVE BROUGHT THIS TO THE ATTN OF MY SUPVR. ON APR/SUN/05 I COMPLETED WORK CARD X AND FOUND A FINE RESIDUE OF GREASE EXISTED ON THE JACKSCREW THREADS AND RPTED IT AS OK PER CARD. I PERFORMED A THOROUGH INSPECTION OF THE HORIZ STABILIZER ACTUATOR JACKSCREW INSTALLATION. THIS INCLUDED THE UPPER AND LOWER SCREW AND NUT ROTATIONAL STOPS FOR DAMAGE. I INSPECTED FOR MISSING OR BROKEN SAFETY WIRE ON THE TORQUE TUBE NUT AT LOWER END OF THE SCREW. I ALSO INSPECTED FOR CORROSION OR DAMAGE OF THE SCREW THREADS. I RPTED THAT THE FINDINGS WERE OK. I INSPECTED FOR METAL FRAGMENTS/SHAVINGS AND RPTED FINDINGS AS 'NO.' I LUBRICATED THE HORIZ STABILIZER ACTUATOR ASSEMBLY. I MOVED THE HORIZ STABILIZER TO THE FULL ACFT NOSE DOWN (AND) POS. I APPLIED GREASE TO THE ACME NUT LUBE FITTING UNTIL ONLY NEW GREASE SHOWED AT THE TOP OF THE NUT. I CLEANED THE EXPOSED ACME SCREW AND VALLEYS WITH RAGS. (THIS IS WHERE THE PROPER THREAD CLEANING TOOL SHOULD HAVE BEEN USED.) I MOVED THE HORIZ STABILIZER THE FULL ACFT NOSE UP (ANU) POS. I THEN CLEANED THE EXPOSED ACME SCREW WITH CLEAN; DRY RAGS TO REMOVE AS MUCH GREASE AS POSSIBLE. (THIS IS WHERE THE PROPER THREAD CLEANING TOOL SHOULD HAVE BEEN USED.) I LUBRICATED THE HORIZ STABILIZER ACTUATOR ASSEMBLY BY PUTTING A LIBERAL COAT OF GREASE AROUND THE EXPOSED ACME SCREW AND VALLEYS. I MOVED THE HORIZ STABILIZER TO THE FULL ACFT NOSE DOWN (AND) POS. I LUBRICATED ALL OF THE REMAINING LUBE FITTINGS AS PER CARD AND CYCLED TO FULL UP AND DOWN POS 1 TIME. I REMOVED THE EXCESS GREASE FROM THE UPPER AND LOWER STOPS ON THE JACKSCREW WITH CLEAN; DRY RAGS. I PERFORMED TEST OF HORIZ SHUT OFF AS CTLS AS PER CARD AND TESTED OK. I HAVE BEEN INVOLVED WITH THE 'B' CHK CARDS X AND Y SINCE THEY WERE REQUIRED AT 'B' CHK. THIS IS THE FIRST TIME I WORKED THE REVISION DATE OF APR/WED/05 FOR X CARD. TO THE BEST OF MY KNOWLEDGE AND EXPERIENCE; I BELIEVE I DID A THOROUGH AND COMPLETE CLEANING OF THE ACME THREADS AND VALLEYS WITH THE CLEAN; DRY RAGS. SINCE I DID NOT USE THE PROPER TOOK REQUIRED; I FELT AN OBLIGATION TO MYSELF AS AN A&P AND TO THE SAFETY OF THE ACFT TO RPT THIS. ACTION TAKEN: THOROUGH AND COMPLETE CLEANING OF THREADS AND VALLEYS WITH CLEAN; DRY RAGS. CONTRIBUTING FACTORS: GREASE REMOVAL TOOL NOT AVAILABLE. THE PREVIOUS WAY OF CLEANING JACKSCREW WAS WITH RAGS; BEFORE THE APR/WED/05 REVISION.