ADB EZ-Torque™ Hoist Ring
5740 Hunt Rd.
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Valdosta, Ga. 31606
Phone (229) 253-8928
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Fax (229) 253-8929
LUBRICANTS
AIR IMPACT TOOL SELECTION
90 psi air pressure
HELPFUL TIPS
Main Stud:
Any standard anti-seize lubricant can be used.
Jackbolts:
Are pre-lubricated from the factory with graphite (JL-G) lubricant. For reuse after high temperature service, remove
clean and re-lubricate the jackbolts with the correct lubricant. For best results, also lubricate the female threads.
Washers:
Apply JL-G lubricant to the washer face (or jackbolt tips). Again it is important to use the correct lubricant.
Note: The jackbolt torque actually achieved by an air impact wrench is usually only 30-50% of its rated output. For minimum hand work, use an
impact with an output of 110%-120% target torque. For maximum power, use the largest airline and fitting.
Up to 70 ft-lbs:
For 15-35 ft-lbs use a right angle ratchet or light duty 3/8” impact. For 35-70 ft-lbs use a heavy duty 3/8” impact.
70-100 ft-lbs:
Use a light duty ½” impact at a reduced pressure or setting. (Be careful not to over-tighten! Calibrate the impact
before starting).
100-170 ft-lbs:
For 100-130 ft-lbs use a light duty ½” impact. For 130-170 ft-lbs use a heavy duty ½” impact.
170-200 ft-lbs:
Use a light duty ¾” impact on low setting. Some heavy duty ½” impact will also reach this range.
Over 200 ft-lbs:
For 200-300 ft-lbs, use a light to medium duty ¾” impact. Over 300 ft-lbs, use a heavy duty ¾” impact.
Calibrating an air impact wrench: Tighten one jackbolt until the socket rotation stops and check the jackbolt with a torque wrench. The torque
required to move the jackbolt further is the output of the impact as measured on tensioners.
1) Check threads of main stud: If possible, verify that the threads spin on prior to the installation date. If a thread is tight or will
not thread on, try using lapping compound on the main thread and work the threads in a back and forth motion making small
advances when the thread loosens up. If necessary, chase or re-tap the threads.
2) Back the tensioner off before tightening to provide 1/16” to 1/8” gap: The additional jackbolt extension provides easy access
for oiling the jackbolt tips prior to removal. This is especially beneficial for oiling when the tensioners are inverted.
3) Sockets: High hex stresses require the use of quality sockets. Have several spares handy for each job and replace them at
the first sign of wear. Special sockets are required when using a ¾” impact or torque wrench due to close jackbolt spacing.
4) For turning the threads on and off: A spanner wrench can be utilized to grip the nut diameter. Also, two deep well sockets
inserted over two jackbolt hex’s at 180º apart can serve as “handles” for spinning the tensioners on and off the studs.
5) To improve efficiency when using impacts: Don’t wait for the socket to stall completely on a specific jackbolt before
advancing to the next jackbolt. It is faster, overall, to move quickly between jackbolts.
6) ¼ turn or less: Removing the jackbolts more than a ¼ turn will increase the removal torque of the remaining jackbolts and
you may get stuck. If this happens, you will have to retighten and start again.
7) Stuck Jackbolt Removal: If a jackbolt will not turn, remove, relube, and retighten a neighboring jackbolt and then try to turn it.
FOR TIGHTENING:
PRIOR TO TIGHTENING:
FOR REMOVAL:
Installation Procedure Continued
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