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16. Rotate the exposed strain insulator counterclockwise to
restore the conductor of section 2 to its original prestrain.
Use the pretension gauge (#220043) to set the proper location of
the driver ring. 17. Again, check the installation of the O-rings between section 1 and section 2, and reinsert them into their corresponding grooves as required. If necessary, draw a small bead of adhesive (#10866-122) to hold the O-ring in its groove. Wipe off the previously applied Alumashield® coating and reapply a thin, approximately 1/64 inch (0.4 mm), continuous coating of Alumashield® (#203233-4) from the center of the flange holes to the outer edge of the flange. CAUTION: THE MATING FLANGE SURFACES AND THE INSIDE OF THE CABLE SECTIONS MUST BE CLEAN. Inspect these visually and remove any dirt, adhesive, or other foreign material before beginning the steps to join the outer conductors. 18. Slide the outer conductor of section 1 to allow the four bolts to pass through the flange. Butt the outer conductor against the centering fixture, taking care that the O-rings are not displaced. Remove the four bolts and then remove the centering fixture. 19. Insert the remaining flange bolts from the hardware kit (#209608). 20. Slide the outer conductor until the flanges butt, taking care that the O-rings are not displaced. Install the remaining flange hardware, using a back-and-forth twisting action to install the threadseal washers. |
21. Use the torque wrench assembly (#220045) to tighten the
bolts to a 38- to 40-ft-lb torque. After the bolts are torqued,
coat the exposed threads with Alumashield® (#203233-4).
CAUTION: TIGHTEN THE BOLTS GRADUALLY with the ratchet wrench assembly (#221180). Use an alternating pattern to produce uniform contact an to avoid warping the flanges. If nut runners are being used, first hand-tighten four bolts about 90° apart. Next, run up the other nuts. Then, tighten all bolts to the final torque, by hand, using the torque wrench assembly. 22. Move back to the repair section interface and use four flange bolts from a new hardware kit (#209608) to hold the strain-insulator centering tool against the section 1 flange. The threaded end of the bolts should face the repair section outer conductor. 23. Rotate the strain insulator until it is flush with the flange of section 1. Continue to rotate the strain insulator until the driver ring of section 1 is positioned properly, as determined by the pretension gauge (#220043). 24. Check the installation of the O-rings on the ANT end of the repair section, and reinsert them into their corresponding grooves as required. If necessary, draw a small bead of adhesive (#10866-122) to hold the O-ring in its groove. Wipe off the previously applied Alumashield® coating and reapply a thin, approximately 1/64 inch (0.4 mm) continuous coating of Alumashield® (#203233-4) from the center of the flange holes to the outer edge of the flange. |