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Page 34
Install the element return mounting plate (PN 10-1608-01). Use four of the 1-3/4” aluminum saddles,
5/16” x 3-1/2” hex head bolts and 5/16” Nylock nuts as shown in figure 3.30. Tighten the nuts, but
leave loose enough to adjust for the center-to-center measurement. Again using four of the 1-3/4 alu-
minum saddles, 5/15” x 3-1/2” hex head bolts, and Nylock nuts, loosely install the return tube saddles
as shown in figure 3.31.
Insert the element return tube (PN 10-1015-11) as shown in figure 3.32. Be sure that the return tube
is protruding out approximately 2.5 inches away from the aluminum saddle edge on each side, as
shown in figure 3.34. Tighten the saddles to a maximum of 7 ft lb (9.5Nm). This is very important.
The aluminum saddles can crush the fiberglass tubes if the saddles are too tight.
Measure 30 inches from the center-point of the Director EHU to the center-point of the element return
tube as shown in figure 3.33. Level the return bracket assembly as shown in figure 3.34 and tighten
the saddle bolts firmly. Do not forget to use anti-seize on all stainless steel fasteners, and also remem-
ber to install a set screw into each saddle pair (one set screw per saddle pair).
NOTE: If you purchased the optional boom truss kit, be sure to mount the truss attachment plate (PN 10-
1607-01) on the Director return tube as shown in figure 3.35. The attachment plate is inserted between the
top of the hex head bolts and the return tube mounting plate. If you did not purchase the boom truss op-
tion, disregard this note.
Figure 3.36 shows the completed director EHU and return bracket.
CHAPTER THREE
Section 3.3
MOUNTING THE EHU’S ON THE BOOM (continued)
RETURN TUBE MOUNTING—DIRECTOR EHU
FIG. 3.30
FIG. 3.36
FIG. 3.31
FIG. 3.32
FIG. 3.33
FIG. 3.34
FIG. 3.35
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