80-0420-23 POWER TONG
Manual № TM12012
Section 5
Page 5.5
©2008-2017 McCoy Global
Maintenance
5.5 LUBRICATION INSTRUCTIONS
Use a quality multipurpose bearing lubricant that will remain within its viscosity range at expected operating temperatures.
In addition, McCoy recommends the following lubrication procedure at the completion of each job prior to storage.
McCoy recommends that a liberal coating of grease be applied to the cam surface of the rotary drive gear prior to jaw
installation. Also, the clutch inspection plate should periodically be removed, and a liberal coating of grease applied to
the clutch, drive gears and shifting shaft.
Coat the jaw pins and rollers with a liberal amount of anti-seize compound when installing new jaw die kits.
5.5.1 Recommended Lubrication Amounts
McCoy recommends lubricating your equipment before beginning each shift, and immediately following operation
prior to storage. The grease amounts listed in the table below are estimated minimums, and should be used as
a guideline when establishing a lubrication routine as part of a maintenance schedule.
McCoy recommends liberally coating the cam surface of the rotary drive gear with grease prior to jaw installation.
Periodically remove the clutch inspection plate and apply grease generously to the clutch, drive gears and shifting
shaft. Coat the jaw pins and rollers with a liberal amount of anti-seize compound when installing new jaw die kits.
1. Rotate the tong to the “open throat” position. Ensure tong and backup doors (if equipped) are closed. Fully extend
the lift cylinder
2. De-energize the power unit.
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.
!
CAUTION
ENSURE ADEQUATE CONTAINMENT IS IN PLACE TO PREVENT ENVIRONMENTAL CONTAMINATION
FROM RESIDUAL HYDRAULIC FLUID
!
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
6. Disconnect the hydraulic RETURN line from the equipment.
7. Disconnect remaining hoses such as case drains, or lines connected to the turns counter encoder.
5.4 HYDRAULIC SYSTEM DEPRESSURIZATION
McCoy Global recommends that the hydraulic system be depressurized prior to maintenance on any hydraulic component.
Perform the following steps to ensure the dangers posed by hydraulic fluid under pressure are minimized.
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