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Page 36
Refer to the center-to-center measurements in
figure 3.02 in Chapter Three, Section 3.0
when installing each
of the EHU’s and mounting plates to the boom. The EHU should already be wired before placing it on the
aluminum mounting plate.
Position the aluminum mounting plate (PN 10-1015-11) and align the 2” aluminum saddle halves (PN 10-
1601-22) as shown in
figure 3.41
. Insert the 5/16” x 3-1/2” hex head bolts (PN 60-0065) and thread on the
5/16” Nylock nuts (PN 60-0046). Insert a set screw on the exposed side of the aluminum saddle. Tighten,
but allow the mounting plate to be loose enough for adjusting the center-to-center measurement. Be sure to
use anti-seize on all stainless steel fasteners.
Place the EHU gasket (PN 10-1502-01) onto the mounting plate as shown in
figure 3.42
. Align the gasket
with the holes on the mounting plate. Place the EHU (PN 70-3406-01) onto the mounting plate and attach
using the #10 x 3/4” machine screws (PN 60-0017), #10 flat washers (PN 60-0018) and #10 Nylock nuts (PN
60-0019) as shown in
figure 3.43
. Be sure that the flat washer is between the machine screw head and the
EHU housing as shown in
figure 3.44
. Tighten the Nylock nuts enough to compress the gasket material but
do not over tighten or you can crack the plastic EHU housing.
Measure 20.5 inches from the center-point of the driven element EHU to the center of the EZ-Eye eyebolt as
shown in
figure 3.45
. This measurement should allow for accurate initial placement of the Driven EHU, but
ALWAYS defer to the center-to-center measurements as your priority. The center-to center length from the
director EHU to the Driven EHU, which should be 89.5 inches.
Level the EHU as shown in
figure 3.46
and tighten the aluminum saddles firmly.
Figure 3.47
shows the
completed Driven EHU.
CHAPTER THREE
SECTION 3.4
MOUNTING THE EHU’S ON THE BOOM (continued)
SECURE MOUNTING PLATE AND EHU TO BOOM—DRIVEN ELEMENT
FIG. 3.45
FIG. 3.44
FIG. 3.42
FIG. 3.43
FIG. 3.41
FIG. 3.46
FIG. 3.47
