3531 Coupler having air leak found durin ~~~~~ 3531 Coupler having air leak found durin

 
- Checked and found #3531 when electrical head coupler open/close heavy air leak. Replaced 5/2 way directional valve to no avail, air constant leak from 5/2 way directional valve exhaust. Suspect from the electrical head piston cylinder
- 3531 MPV Heavy air leak replace done.
- 2532 found PB bogie 1 test point heavy air leak replace done.
- 2532 bogie 2 leveling valve leaking constantly air leak from exhaust. Adjusted Air spring height few times to no avail. Swapped MPV from 3531 to 2532 to no avail. Replaced 2532 bogie 2 leveling valve and adjusted air spring height. Monitor no sign of air leak.
- 3532 A/s wiper washer valve was open, air leak non-stop. Close washer valve in cab.
- Conduct air leak test with isolated 3531 auto coupler 0.65bar/5min.
- To follow up check on 3531 Auto coupler electrical head piston cylinder and improve air leak.

Done by: Saini, Asruddin, Zulqarnain
(14/1/24)

To follow up 3531 Auto coupler check on Piston cylinder and improve air leak

 
- Found both sides auto coupler cylinder seal O-ring damaged, causing the air to leak. Replaced seal kit and function test ok. Brake cyclic test ok, no abnormal air leaking from brake frame.
- Cut in: 8.7bar, cut out: 10.5bar, charging time: 2min 10sec.
- Air leak test: 0.5bar/5min.

Done by: Sanip, Koh, Jack
(15/1/24)