Staff(KRJ) at platform feedback at frontM1 car loud air discharge sound heard undercarriage near do or #7-8. TC checked MR pressure around 9-10 bar. Staff(CCK) checked and confirmed continuous loud air discharge sound he ~~~~~ Staff(KRJ) at platform feedback at front     #1542-#2 end MR cock handle not fully close obstract by the jumper cable during turning.Reposition the jumper cable tie at the bracket.Handle able to fully close. #2541-B side no #1 end levelling v/v found air leak from exhaust,replace new levelling v/v.Air spring ht 280mm,2 shim,function test v/v able to inflate & deflate.Air leak test 0.5bar/5min. Levelling v/v KSF A Old s/n: 1027-410 New s/n: 1643-790 Not: 2311875 raise. Done by Zulq/Asruddin  06/09/21