When departing, "B" side cab door openedby itself, EB was applied, cab door self closed back. ~~~~~ When departing, "B" side cab door opened     #3539 Check B side cab door double latch to cab door tougue check and found intermittent DIR when cab door latched due to gap between limit s/w and plunger(4mm)adjusted to 0mm at normal position.Followed by additional 2 turns to plunger when cab door is in closed position.Tug test ok,no occurence of DIR. Done by Zulq/Saini/Asruddin. 07/07/22