ADB EZ-Torque™ Hoist Ring
5740 Hunt Rd.
i
Valdosta, Ga. 31606
Phone (229) 253-8928
i
Fax (229) 253-8929
BEFORE TIGHTENING
Determine the target jackbolt torque
it is located on
the Nut diameter, or call ADB.
Note: The jackbolt torque value stamped on the tensioner is a
standard value for this assembly and may not be correct for your
application.
If using air impacts:
Select a tool with output of about
100% - 110% of the target torque. See “Air Impact Tool
Selection” on back.
Preparation:
1)
Confirm jackbolts are lubricated with
correct lubricant (JL-G). New product is pre-lubricated
at the factory.
2)
Make sure the jackbolt tips are flush
(or recessed) with bottom of nut body.
3)
Lubricate
thread of main stud.
4)
Lubricate the washer face or
jackbolt tips with correct lubricant (JL-G).
To speed up installation
: use two workers at 180º
apart, following the OEM pattern for tightening.
TIGHTENING SEQUENCE
STEP 1:
Spin the tensioner onto the main thread until it
seats against the washer. You may want to back off
the tensioner slightly as mentioned in Helpful Tip #2.
STEP 2:
Tighten (4) jackbolts at 90º apart (12:00, 6:00,
9:00 and 3:00)
on all studs
with a partial torque (30-
70%). This serves to seat the flange. If using an
impact, use a reduced setting or lightly pulse the
trigger at the full setting.
STEP 3:
At 100% target torque, tighten the same (4)
jackbolts
on all studs
.
STEP 4:
At 100% target torque, tighten all jackbolts in
a circular pattern. Do this for all studs (1 round only).
STEP 5:
Repeat “STEP 4” until all jackbolts are
“stabilized” (less than 10º rotation). This usually
requires 2-4 additional passes. If using air tools, switch
to a torque wrench to stabilize at the target torque.
Note: Product with 4 or 6 jackbolts – use a star pattern for all steps.
SERVICE OVER 250º F
Preparation:
Above 300º F the petroleum base of the
lubricant burns off. Oil per “STEP 1” below to reduce the
removal torque.
STEP 1:
As the equipment is cooling down (around
300º F), apply hydraulic oil to the jackbolts and washer
and let sit for several hours. Thoroughly “wet-down” all
components and re-apply during equipment cool down
period. If the tensioner is inverted, squirt oil in the gap
between the nut body and the washer. Synthetic oil
can be used for oiling above 300º F.
STEP 2:
Wait for tensioners to cool below 200º F.
Using a circular pattern, “crack” each jackbolt only
enough to ensure movement. Do not turn beyond the
break loose point. Do this for all studs.
STEP 3:
Now begin with “STEP 1” of the procedure for
service under 250º F.
Note: Heating Rods can be used to reduce the removal
torque required.
SERVICE UNDER 250º F
Preparation:
Spray jackbolts with penetrating oil or hydraulic
oil prior to start (especially if product is in a corrosive
environment).
STEP 1:
Loosen each jackbolt 1/8 turn following a
circular pattern around the tensioner (1 round only). As
you move around and get back to the 1
st
jackbolt, it will
be tight again.
Do this for all studs
on the joint
prior
to the next step.
STEP 2:
Repeat a 2
nd
round as above
for all studs
,
loosening each jackbolt ¼ turn in a circular pattern.
STEP 3:
Continue loosening ¼ turn for 3
rd
and
successive rounds until all jackbolts are loose.
Note: Usually after the 3
rd
or 4
th
round, an impact can
be used to completely retract the jackbolts, one by one.
STEP 4:
Remove, clean, and re-lubricate the jackbolts
prior to next use with correct lubricant (JL-G).
Installation Procedure
Removal Procedure
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