TC: MR dropped tp 8bar and slowly charging up,no faults, performance ok. ~~~~~ To ChangeOut car #3529 Air-Compressor , Thereafter function test.   check both car DT Air compressor operating normal. found 3529 A/S WFL air tube burst air leaking badly. replaced new tube and function test ok.carryout air compressor cut in/cut out and air leak test pass.OPN 20 raised 3529-cut in-8.70 cut out-10.5 3530 cut in-8.50 cut out-10.30 air leak-0.6 bar/5min N.A/lai mk/yanto/30.10.22      Replaced all car leaking test point and carry out leak test 0.5 bar/5 mins operation raise opo 030 to C/O #3530 air compressor. N.A/lai mk/arun/azli/faizal/31.10.22     -----------Down for Investigation and Rectification ---------- Found WFL pipe burst. Replaced pipe and function tested ok. Leak rate 0.6bar/5min. Conducted both local compressor function test. Cut-in/out satis. Charging time failed. Checked both air dryers - performance satis. changeover was normal. Checked MR tank - no water content observed. To change-out both 3530 and 3529 air compressors. While awaiting KSF air compressors, changed test points on the trains. Managed to reduced leak rate to 0.5bar/5min. Replaced 3530 Air compressor. Function tested. Cut-in/out and charging rate satis. To change out 3529 Air compressor on 02/11 prior to L3 clearance. cut in-8.50 cut out-10.30 air compressor old s/n:132 new s/n:501643112 N.A/lai mk/arun/azli/faizal/01.11.22