2529 Levelling valve air leaking. To che ~~~~~ 2529 Levelling valve air leaking.  2529 replaced levelling compensating v/v. No air leak found at levelling & levelling compensating v/v during function test. Air leak check = 0.4 bar/5 min. Function test - OK.  Abdillah/Hairi/Haziq/Faizal 44995 #2529 Levelling Compensating v/v S/N : OLD : 1040872 NEW : 2209492