What was found
AIRCRAFT GROUNDED: BURNING ODOR AFTER T/O, SMELLED LIKE OVEN, BUT NONE WERE ON. LASTED 3-5 MINS. F/AS IN AFT GALLEY SAID SMELL VERY STRONG, NOT AS MUCH IN FWD GALLEY. F/AS REPORTED THAT AFT CHILLER WAS ON DURING TAKEOFF BUT WAS NOTED TO BE OFF AFTER EVENT. NO SMOKE. ALL C/BS IN. NO OTHER EVIDENCE OF BURNING. MAINT DETERMINED SOURCE OF ODOR TO BE APU. ACCOMPLISHED TASK 26L00021002, APU SMOKE ODOR TROUBLESHOOTING AND TASK 26L00021004. FOUND TRIMABLE HORIZONTAL STAB & TRIMABLE HORIZONTAL STAB BAY WET WITH HYD FLUID, DUE TO LT & RT HYD MOTORS LEAKING & DETERMINED IT TO BE THE ODOR CAUSE. REPLACED THE LT & RT TRIMABLE HORIZONTAL STAB HYD MOTORS IAW AMM 27-44-35. A SATISFACTORY LEAK /OPS CHECK ACCOMPLISHED.