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Page 48
CHAPTER SEVEN
SECTION 7.1
DIRECTOR 3 EHU (continued)
RETURN TUBE ASSEMBLY—DIRECTOR 3
Install the element return mounting plate (PN 10-1608-01). Use four of the 1-3/4” aluminum saddles
(PN 10-1601-03), 5/16” x 3-1/2” hex head bolts (PN 60-0065) and 5/16” Nylock nuts (PN 60-0046) as
shown in
figure 7.10
. Tighten the nuts, but leave loose enough to adjust for the center-to-center
measurement.
Figure 7.11
shows the return tube mounting bracket attached to the boom. Again us-
ing four of the 1-3/4 aluminum saddles, 5/16” x 3-1/2” hex head bolts, and Nylock nuts, install the re-
turn tube saddles as shown in
figure 7.12
. The saddles should remain loose, with the Nylock nuts
threaded on just a couple of turns as shown in figure 7.13.
Insert the element return tube (PN 10-1015-11) as shown in
figure 7.14
. Be sure that the return tube
is protruding out approximately 2.75 inches away from the aluminum saddle edge on each side, as
shown in
figure 7.15
. 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. DO NOT put a set
screw in the aluminum saddles that are used on the fiberglass return tube material.
Measure 30” from the center-point of Director 2 as shown in
figure 7.16.
Level the return bracket as-
sembly as shown in
figure 7.17
and tighten the saddle bolts firmly. Do not forget to use anti-seize on
all stainless steel fasteners, and also remember to install a set screw into each saddle pair (one set
screw per saddle pair).
Figure 7.18
shows the completed Director 3 EHU and return assembly.
FIG. 7.14
FIG. 7.10
FIG. 7.12
FIG. 7.15
FIG. 7.11
FIG. 7.13
FIG. 7.17
FIG. 7.18
FIG. 7.16
