Finding a motor for a Williams engine

[qnr9933]

My grandfather has a Williams engine whose motor died, I'm trying to find the motor online but havent had any success.
This is what I know about it,

On the box it has
Berkshire 2-8-4
Cab#1447
Item# Berk 102
and its an O gauge train

Thank you for any help!!!

[the Bach-man]

Dear QNR,
Give the service department a call on Monday.
Have fun!
the Bach-man