The services of the train, using rack and pinion system to climb the steep gradient, were first cancelled on May seven, between Mettupalayam and Coonoor, following landslip and uprooting of trees on the track between Kallar and Adarley stations.
Though restoration works were carried out on a war footing, more trees were found falling on the track, necessitating suspension of the train between Mettypalayam and Coonoor, railway officials said.
Clearing works between Kallar and Adarley stations are continuing, they added.