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Page 27
SECTION 2.1
ATTACH THE BOOM TO THE MAST PLATE
Slide the
5/16”
x
3.50”
hex head bolts (PN 60
-
0114) into the mast plate, and place the first half of the 1.75
inch aluminum saddles (PN 10
-
1601
-
01) onto the bolts as shown in
Figure 2.10
. Place the boom in the
saddles as shown in
Figure 2.11
, and attach the other half of the
1.75”
aluminum saddles. Apply anti
-
seize
to the bolts and thread on the
5/16”
Nylock nuts (PN 60
-
0046). Tighten the nuts until the boom is snug,
but you can still rotate it.
Use a short level to level the boom to the mast plate (The EHU plate must be level also or this won
’
t work).
When the mast plate is level with the boom, tighten all of the saddle nuts firmly. Don
’
t forget to install the
set screws in the saddles as shown in
Figure 2.13.
Only the exposed half of the saddles will require a set
screw.
Use the 10
-
32 x
5/16”
SS buttonhead screws to hold the
2”
mast saddle halves in place on the mast plate,
as in
Figure 2.10
. and temporarily use the
5/16”
x
3.75”
bolts and nuts to hold the mast saddle clamp.
Fig-
ure 2.15
shows the completed assembly.
FIG. 2.10
FIG. 2.11
FIG. 2.14
FIG. 2.12
FIG. 2.13
PREPARING THE BOOM ASSEMBLY
Mast Plate Attachment to Boom
Assembly of the Boom/Mastplate is now complete.
FIG. 2.15
10
-
32 x
5/16”
SS buttonhead (makes attach-
ing antenna to the mast
much
easier)