Specifications

SECTION IV
OPERATION – HYTORC
LoaDISC and Clamp -continued from the previous page-
4-6 HYTORC Clamp Installation - Detensioning
1. Before using XXI or Avanti tool on the Clamp, make sure the tool and the drive member are set
properly. The castellated drive and the splined reaction member should stick out on the left side for
detensioning. Cycle the tool and the drive a few times to ensure that the tool is properly operating.
Repeat this step only when you change the tool or the drive.
2. Detensioning, in general, requires higher pump pressure. Refer to the load chart and set the pump
pressure slightly higher than the value used for tensioning. Turn the pressure regulator counter
clockwise to set it below the target pressure. While holding the advanced button on the remote
control, slowly turn the pressure regulator clockwise to increase the pressure to the desired value.
Ensure the pressure value is set properly by holding the advanced button.
3. Remove drive from tool, engage the splined reaction member to the Puller Sleeve first. Then
engage the castellated drive to the castellated section of the Nut. Turn the drive manually until both
castellation are fully engaged. Place tool on drive with “LOOSEN” side facing the operator. Install
drive retainer.
4. Apply the pump pressure to detension the Clamp, until it can be turned by hand.
5. Repeat 3 & 4 until all bolts are fully tensioned.
On applications that require two or three passes
to tension, it is advised to detension the last few
bolts in two passes.
If corrosion makes it impossible for the Clamp to
be turned by hand even after detensioning, use
the hex/spine adaptor. To use the hex/spline
adaptor, insert the male spline of the adaptor into
the female spline of the Puller Sleeve. Place a
wrench over the hex of the adaptor and rotate
the Sleeve off the bolt.
NOTE: Before reusing the Clamps, it is imperative that the Clamps are properly cleaned and re
lubricated to prolong their life. Refer to the lubrication instruction on the next page.