What was found
INVESTIGATED REPORT OF HYD FLUID ON TOP OF NLG TIRES. FOUND NLG STEERING JACK DRIPPING HYD FLUID FROM BOTH ENDS SEALS. NLG STEERING JACK REPLACED 3 DAYS PREVIOUSLY FOR SAME CONDITION, ACFT HAD NOT FLOWN YET SINCE REPLACEMENT WITH "0" TSOH NLG STEERING JACK. HAVE REPLACED LOW TIME SINCE OVERHAUL NLG STEERING JACKS 3 TIMES IN LAST 4 MONTHS FOR SAME CONDITION. ALL REPLACED AND INSTALLED UNITS OVERHAULED OR REPAIRED DURING 2009. RECOMMEND O/H FACILITY INVESTIGATE RECORDS TO SEE IF INSP, REPAIR, OR Q/A PROCESSES NEED TO BE MODIFIED. RECOMMEND NLG STEERING JACK MFG INVESTIGATE WHETHER COMPONENT MM SERVICE LIMIT DIMENSIONS FOR WEAR NEED TO BE CHANGED TO CLOSER TOLERANCES.