523/524 Air leak test fail (1.2bar/5min) ~~~~~ 523/524 Air leak test fail (1.2bar/5min)     Check and found #3523 AS pipe join air leak and CR pipe air leak both tightened ok.Brake frame silencer air purging,replace B13 v/v (Double check v/v)ok.#1523 & #2523 both MPV leak-repalce O-ring ok. Air leak test=0.35bar/5min. Done by Rizman/Sanip/Koh.  08/11/22