#3640,auto coupler found air leakage,To rectify ~~~~~ #3640,auto coupler found air leakage,To rectify  Auto coupler electrical head cylinder air leaking on both sides. Changed out the seals on both sides. No further air leaks detected. Function tested auto coupler ok. Further found #2639 MPV leaking. Changed out MPV and checked no further leaks. #2639 MPV Notification: 2571760 Done by: Rizman/Sanip/Koh/Jack 45341