80-0420-23 POWER TONG
Manual № TM12012
Section 5
Page 5.15
©2008-2017 McCoy Global
Maintenance
5.10 TUBULAR CONNECTION EQUIPMENT DE-COMMISSIONING & SHIPPING
Perform the following decommissioning procedures when removing tubular connection equipment from service, with the
intent of short to long-term storage. These procedures are essential for ensuring proper protection of the equipment from
environmental attack, and to aid in the quick turnaround when returning the equipment to service.
Store all o-rings, seals, packings, gaskets, etc. in strong moisture proof, airtight containers. Ensure that these items are
not crushed, nicked, or otherwise damaged.
Do not perform any further actions or maintenance while the tong is connected to any hydraulic power supply. McCoy
Global recommends that all hydraulic lines are fully disconnected, and residual hydraulic pressure is bled off. Ensure
adequate containment is in place to prevent environmental contamination from residual hydraulic fluid.
1.
Perform an initial wash of the tool in order to remove the majority of dirt and grease build-up. Ensure adequate
containment is in place to prevent environmental contamination from residual hydraulic uid and dirty grease.
2.
Clean the interior of the tong thoroughly, using either water (do not use a pressure washer), or an appropriate
solvent-based grease-cutting cleaner such as Varsol. Ensure adequate containment is in place to prevent
environmental contamination from residual hydraulic uid, dirty grease, and cleaning agents. Make a note if any
metal shavings or metal pieces are ushed out of the gear train cavity - if shavings or metal pieces are seen the
tong must be overhauled before it is returned to service.
3.
Clean the exterior of the tool thoroughly, using either water (do not use a pressure washer), or an appropriate
solvent-based grease-cutting cleaner such as Varsol. Ensure adequate containment is in place to prevent
environmental contamination from residual hydraulic uid, dirty grease, and cleaning agents.
4.
Inspect all fasteners and fastener safety wires (if equipped). Replace any missing fasteners - use Grade 8 bolts
only. Re-torque all external fasteners to SAE specications.
5.
Inspect backing pin(s). Replace cracked, broken, or bent pins.
De-pressurization Procedure In Preparation For Storage:
1. Rotate the tong so that the opening in the rotary gear faces the gear train (towards the rear of the tong). Ensure tong
and backup doors are closed.
2. De-energize the hydraulic power supply.
3. Repeatedly actuate the tong motor control valve lever IN BOTH DIRECTIONS to dissipate any residual pressure in
the valve and motor.
4. Remove the hydraulic SUPPLY line from the equipment.
5. Repeatedly actuate the remaining control valve levers IN BOTH DIRECTIONS to dissipate any residual pressure in
the remainder of the hydraulic control system.
7. Disconnect the hydraulic RETURN line from the equipment.
8. Disconnect all remaining quick-connect hoses.
9. Disconnect all remaining connections from the equipment - for example, load cell connections, turns counter
connections, dump valve connections. Ensure the tool is completely free of all connections before beginning storage
preparations.
NOTICE
IN ORDER TO MAINTAIN THE INTEGRITY OF INSTALLED SEALS, MCCOY RECOMMENDS THAT THE
MAXIMUM STORAGE INTERVAL NOT EXCEED ONE YEAR. AT LEAST ONCE PER YEAR ALL TUBULAR
CONNECTION EQUIPMENT IN LONG-TERM STORAGE SHOULD BE RECOMMISSIONED AS PER SEC-
TION 4.L. IF FURTHER STORAGE IS REQUIRED, THE EQUIPMENT SHOULD THEN BE PUT THROUGH
ANOTHER DE-COMMISSIONING PROCEDURE.
!
WARNING
HYDRAULIC PRESSURES AS HIGH AS OPERATING PRESSURE MAY REMAIN TRAPPED IN SMALL
AREAS OF THE EQUIPMENT. ENSURE ALL MAINTENANCE IS CARRIED OUT BY A QUALIFIED
SERVICE TECHNICIAN, AND THAT ADEQUATE PERSONAL PROTECTIVE EQUIPMENT IS USED TO
GUARD AGAINST PRESSURE INJURIES.
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