©2008-2017 McCoy Global
Manual № TM12012
80-0420-23 POWER TONG
Section 5
Page 5.14
Maintenance
5.9 MONTHLY MAINTENANCE CHECKLIST (CONTINUED):
25.
Rotate tong at high speed for 5 minutes while monitoring temperature of top and bottom bearing caps. If the
bearing caps are hot to the touch (higher than approximately 50
°
C) replace the applicable bearings. Note any
unusual sounds (grinding, rubbing) may be indicative of damaged bearings (see Section 7 for exploded views
for all bearing locations). Monitor hydraulic inlet and outlet lines to ensure operating temperature of the hydraulic
uid does not exceed the specications stated in the Description & Specications Section.
26.
Install load cell. Perform a visual inspection of the load cell components and replace any cracked, broken, or
distorted items including links and chains. Check oil level in load cell and fill if necessary (refer to Section 8 of
the technical manual).
27.
Inspect the load cell anchor pins. Replace the anchor pins if cracking or metal distortion is seen.
28.
While rotating the cage plate, ensure that the jaws properly cam. If the jaws do not cam properly, the brake
bands need to be tightened. Incrementally adjust both the top and bottom brake bands EQUALLY until proper
cam action is achieved. Refer to the Maintenance Section for instructions on properly adjusting brake bands.
29.
Perform a full functional test of the tong including, if applicable, backup components, lift cylinder, and float
frame components. Report and correct any hydraulic leaks from the hydraulic valve bank, or from any hydraulic
cylinders that are used.
30.
McCoy recommends that an anti-corrosive agent such as Tectyl® 506 be applied to all external unpainted
surfaces (and chain slings) EXCEPT cylinder rods, jaw rollers, and rotary gear camming surfaces. Refer to
manufacturer data sheets for proper application and safety information.
Once all of the above maintenance checklist items have been satisfactorily completedm, the tool may be
returned to service.
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