TC reported driving cab 3564 'B' side cab door unable to open from the outside. ~~~~~ TC reported driving cab 3564 'B' side ca     Check and observed B side cab door s/w rod obstruct double latch.Proceed to grinding of s/w rod 3mm ok.Check gap between cab door tongue and double latch 1.5mm ok.Check gap between limit s/w and s/w actuator plunger 0mm gap ok.Function test cab door open/close smooth and DIR/DMI check ok. Done by Koh/Sanip.  19/07/22