#639/640, BOTH CAB PARTITION DOOR,TO CHE ~~~~~ #639/640, BOTH CAB PARTITION DOOR,TO CHE 639/640 check cab partition door operation open/close door ok.Shake/Push/pull test on cab partition door during close ok.No cab    entry illuminated.Check hinge mechanism ok.Check limit s/w functional ok.Rubber strip ok.Check door lock tonuge at #3639 ok.Found #3640 door lock tonuge having deep grooving.To follow replace door lock tonuge.0020 raise. Checked by Zulq.  20/07/22 3640 Door lock tounge replacement #3640 Door lock replaced due to wear and tear.Functional test closed partition door check by push/pull and shake ok.Cab entry ok(not illuminated)Open partition door-ok. Done by Saini/Haslan.  21/07/22