Cab door unable to close automatically.TC manually holding the cab door to ensure it close. Cab doo r unable to close automatically. TC manually holding the cabdoor to ensure it close. ~~~~~ 3555 Cab door unable to close automatically. TC manually holding the cab door to ensure it close.  3555 Found cab door tongue stuck in the down position. Removed and inspacted condition - OK. Re-tightened by checking for free movement. Checked for the overlap and clearance of the cab door tongue and double latch within criteria. DIR able to extinguish when cab door is closed. Function test - OK.  Alan/Lee PT/Anand/Kamarul 45414