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Page 56
CHAPTER EIGHT
SECTION 8.5
MAST PLATE AND DOUBLE TRUSS (continued)
PHILLYSTRAN TRUSS ASSEMBLY (continued)
When securing the Phillystran truss cable, the rule of “don't saddle a dead horse” applies. You must be
certain that the saddle portion of the wire clip is on the longer or “live” side of the Phillystran, and the U
-bolt section is on the “dead” or (short) side of the Phillystran. Because of this, how you thread the
Phillystran through the thimble is important.
When preparing the Phillystran truss, you will need to bring the Phillystran from below the thimble as
shown in
figure 8.51
. Loop the Phillystran around the thimble until approximately 8” of the Phillystran
is on the “dead” side as shown in
figure 8.52
.
Position the first of the four wire clips (PN 60-0045) so that the wire clip is as close to the thimble as
possible, as shown in
figure 8.53
. Again, be sure that the U-bolt portion of the wire clip is on the
“dead” side, and the saddle portion is on the “live” side. Tighten the wire clips, alternating between
each nut so that the tightening force is evenly distributed. Hold each portion of the Phillystran in place
while tightening, to ensure that a good mate is formed between the two cables. Wait 20 minutes and
tighten some more, as cold-flow of the plastic usually occurs. Position the next wire clip approximately
1 inch behind the first wire clip and tighten accordingly. Repeat with the remainder of the wire clips as
shown in
figure 8.54
.
Locate the plastic end cap (PN 60-0044) and push it onto the end of the Phillystran as shown in
figure
8.55
. The cap will be difficult to slide on. An easy way to accomplish this is to heat the cap slightly
with the heat gun—it will slide on easier, but take care not to melt your plastic cap (or your fingers).
Secure the Phillystran pieces at the end of the wire clips with electrical tape as shown in
figure 8.55
.
FIG. 8.53
FIG. 8.51
FIG. 8.55
FIG. 8.54
FIG. 8.52
