Sunny was on the set of the long-running show on Tuesday.
Senior actor Shivaji Satam, who plays ACP Pradyuman in the show, is all praise for the Sunny's down-to-earth nature.
"We are very happy to shoot with him (Sunny Deol) and I have been his huge fan for many years. His nature affects you in a very positive way and it's fun working with him," Shivaji said here.
"It feels good to work with such people. When they (actors) come to promote their films on our show, we also become an extended part of the film family," he added.
Directed by Anil Sharma, 'Singh Saab The Great' is slated to release on November 22 and features Amrita Rao as the female lead.