80-0420-23 POWER TONG
Manual № TM12012
Section 4
Page 4.7
©2008-2017 McCoy Global
Operation
12. Complete the connection at low speed/high torque. Monitor the torque gauge during rotation, and stop
rotation upon reaching the specified make-up torque. Reverse the rotation control valve to release the tong
jaws from the tubular. OPERATING NOTE: Releasing the tong jaws may release compression energy stored
in the spring hanger springs during make-up, causing the tong to “jump” upwards to its pre-connection level.
13. When tong jaws are free, align the opening in the rotary gear with the mouth of the tong, and open the tong
door.
14. Free the tool from the drill string. Note that rig personnel may be required to stabilize the tool as it completely
releases from the drill string. Guide the tool away from the string and lower it to the drill floor if desired.
15. Repeat steps 4 through 14 until the desired number of connections are made up.
!
CAUTION
COMPRESSION ENERGY STORED IN THE SPRING HANGER SPRINGS MAY CAUSE THE TONG TO
“JUMP” SLIGHTLY WHEN TONG JAWS ARE RELEASED.
1. Ensure hydraulic power supply to the tong and backup is energized. The master link on the rigid sling must
be used to suspend the tong. Do not suspend the tong from any other point.
2. Set the backing pin for “Breakout” operation, indicated on the front of the remote reversing pin cylinder
assembly. The opening in the rotary gear must be aligned with the tong door opening in order to properly set
the backing pin.
3. Properly configure the load cell for breaking out connections. The load cell must be transferred to the
off-driller’s side (the right hand side as seen from the rear of the tong), and the snub line must be transferred
to the driller’s side to perform break-out operations. Load cell and snub lines must be rated for the applied
torque plus whatever safety margins stated by your own operating policies. The load cell and snub line
connection points on the drill floor must be sturdy enough to absorb all applied forces.
4. Open the tong door.
5. If necessary, lift the tool from the drill floor.
6. Move the tool on to the tubing joint. Ensure the tong is level and perpindicular in relation to the tubular.
7. Close the tong door.
8. Breakout torque is only available when the tong is in low gear. Shift the tong to low gear. Do not shift gears
while the tong is rotating.
4.1.2 Breaking a Connection
NOTICE
YOUR TONG SHOULD BE PROPERLY SUSPENDED, CONNECTED TO A HYDRAULIC POWER SOURCE,
EQUIPPED WITH PROPERLY SIZED JAWS, AND READY TO BREAK CONNECTIONS.
!
CAUTION
RIG PERSONNEL MUST STABILIZE THE TOOL AS IT IS LIFTED FROM THE DRILL FLOOR.
9. Rotate the cage plate in the break-out direction, and cam the jaws on to the tubular. OPERATIONAL NOTE:
Do not apply break-out torque if, for any reason (slippage, for example), the rotary gear rotates past 90
degrees without gripping the tubular. Applying full torque to break out a joint when the rotary gear is not in full
contact with both idler gear assemblies presents a significant hazard of catastrophic tong failure.
!
WARNING
SHIFTING TONG WHILE ROTATING THE MOTOR AND CAGE PLATE MAY RESULT IN CATASTROPHIC
GEAR TRAIN FAILURE.
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