Pax (CCK) reported car 1507 unusual sound at under carriage. between YWT1 to CCK1 Staff (BGB) checke d and confirmed is a unusual motor sound at undercarriage. S M (YWT) cab ride from YWT1 to CCK1 line clear feedback no ab ~~~~~ Pax (CCK) reported car 1507 unusual soun     #1507 found A4 wheel pitted circumference.And also found grease stain on the A4 wheel,further found grease leakage from A4 journal box.Journal box temp-ok,WN coupling check ok.Limited movement ok,no abnormal sound and Dump v/v checked ok. Not: 2284565 raise to RSW for #1507-A4 axle box grease leak. Checked by Saini/Haikel.  10/06/21