Tri Tool 648RBL Clamshell - Manual (Page 17)

17
Model 648RBL Low Profile Clamshell
92-1238 : Rev. 070126
The locking screws are located on the Housing and Headstock.
The Locking Screws are captured in their holes so that they will not come
totally free of the Clamshell.
Separate the Clamshell sections evenly by pulling straight apart.
DO NOT FORCE OPEN.
SECURING THE CLAMSHELL TO THE PIPE
Clean the mating surfaces and the contact surface of the Mounting Pads and the
Jackscrews on each half of the Clamshell.
Wipe clean the mounting surface on the pipe.
Check to ensure that the Tool Blocks will clear the pipe when the Clamshell is
mounted.
Close the sections of the Clamshell around the pipe, keeping the mating surfaces
clean.
Check that the Alignment Pins have seated the split-lines properly.
Bolt the sections of the Clamshell together using the Locking Screws in the Housing
and Headstock.
Tightening torque should be 50 ft-lbs (68 N m) to 60 ft-lbs (81 N m).
Tighten the Adjustable Bars while centering the Clamshell around the pipe.
Wiggle the Clamshell around during this step to insure that the Space Bars
are setting square on the pipe.
Tighten the Adjustable Bars 1 and 3 to no more than 10 ft-lbs (14 N m) of torque.
Tighten the Adjustable Bars 2 and 4 to no more than 10 ft-lbs (14 N m) of torque.
Fine center the Clamshell as you would a 4-jaw chuck.
Take measurements from the pipe OD to the Housing ID or use a dial
indicator to sweep around the pipe’s outside diameter.