I've an existing personal loan for a 4 year tenor. I've already paid 10th EMI. Is it possible whether my father can take over this existing loan, I mean can my father pay this existing remaining emi's, from his a/c directly and not from my a/c as I'm not working anymore. can I request the bank to do so?

I do not expect banks to accept such requests. This can be done if your father was a co-borrower on the loan. You should just get your father to deposit the money in your account and continue to pay the EMIs from your account.