T153 3502 TC reported 'A' side cab door unable to latch. Strap was used
to secure the cab door. Train was reformed with T345 and scheduled
withdrawal to CHD from PSR at 2255Hrs ~~~~~ * ,N * Found 3502 A/S cab door tongue intermittently stuck due to overtightened guide. Adjusted cab door guide and function tested ok multiple times. Fault did not recurr. Checked cab door rigging - overlap and clearance ok. DONE BY: SANKAR/KWOK 17.08.2023