What was found
AFTER T/O RAISED LANDING GEAR, BOTH PRI AND SEC IND SHOWED LT GEAR NOT UP AND LOCKED. NOTED NO UNUSUAL VIB OR CONT INPUT. C/W QRH AND LOWERED THEN RAISED LANDING GEAR. ALL IND WERE LEFT MAIN GEAR NOT UP AND LOCKED. DECIDED TO RETURN TO RAMP. CTR GAVE US A RT TURN AND ALL IND SHOWED UP AND LOCKED. JACKED A/C IN REF TO MD10-10 M/M 07-10-00-0. FOUND GAP AT LT MLG UPLOCK LATCH PROX TO TARGET NOT WITHIN LIMITS. ADJ SHIMS AS REQ TO OBTAIN GAP REF MD-10-10 AMM 32-61-15-4. AS PRECAUTION REMOVED AND REPLACED PSEU IN REF MD-10-10 AMM 31-71-01-2. PERF ADJ TEST OF PROX TARGETS AND TARGETS REF MM 32-61-15-5. ALL TEST PASSED. COMPLETED SEVERAL NORMAL GEAR RETRACTIONS WITH NO DEFECTS NOTED.