To Correctly Install The Tool Joint Lock To Ensure Safety

1. Lubricate the locking screw threads, screw head bearing area, and the tapers of the inner rings with molybdenum disulfide grease, such as Molykote Gn paste.

2. Make sure the save sub, IBOPs, and main shaft are free of “high spots”, such as tong marks. If high spots exist, remove with file or light grinding.

3. Slide the tool joint lock over the main shaft, IBOP valves, and

saver sub.

4. Clean the IBOP valves, main shaft, and saver sub surfaces thoroughly. Make sure these surfaces are smooth and free of grease, oil, and pipe dope.

5. Locate the tool joint lock symmetrically at each joint.

Never tighten locking screws before the tool joint lock is at the correct location, otherwise it will not slide freely.

6. Take any three or four locking screws equally spaced and tighten them to establish parallel or perpendicular position of the tool joint lock collars relative to the main shaft, IBOP valves, and saver sub respectively. This properly seats the collars on the taper of the inner ring and aligns the collars.

7. Using a torque wrench, tighten all locking screws gradually in

either a clockwise or counterclockwise sequence (not in a

diametrically opposite sequence). Continue tightening all of the screws until they reach 185±5 ft-lb.

8. Make sure no screw turns anymore. The gap between the tool joint collars should be as equal as possible all the way around.

9. Safety wire all screws.

TOOL JOINT LOCK  OEM #112848    EVERGROW #169272