Anonymous
Floating the drill stem out is a practice we use, swapping the autoshift to pilot and work the drill stem up and down is another, but the best result we have had is to stop all water going to drum and let it sit for 5 to 10 minutes and let all the water drain from the drum and start working the drill stem up and down until you get the turning motor to start turning, once freed pull bit completely out of coke bed and redrill the pilot hole.. I know time is a factor, for some, we have been running 12 hour cycles for 3 years and like to get a 5 hour warmups in and have not had a problem being on time.