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Page 41
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 4.10
. 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 4.11
.
Insert the element return tube (PN 10-1015-11) as shown in
figure 4.12
. 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 4.14
. 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 4.13
Level the return bracket assembly as shown in
figure 4.14
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 4.15
shows the completed director EHU and return bracket.
CHAPTER FOUR
SECTION 4.1
REFLECTOR EHU (continued)
RETURN TUBE MOUNTING—REFLECTOR EHU
FIG. 4.10
FIG. 4.15
FIG. 4.11
FIG. 4.12
FIG. 4.13
FIG. 4.14
