Assembly of the
Boot-to-Mast
Brackets and Boom
Item Item
No. Description No. Description
16 Bolt hex head
5/16"-18 x 5" 35 Nut
hex
1/4"-20
17
Bolt
hex head, 5/16"-18 x 3' 36 Lockwasher, internal, 1/ 4"
18
Bolt
hex head, 5/16"-18 x 2 3/4' 52 Caplug, 2'
19 Nut,hex, 5/16'-18 59 Mast Bracket, cast aluminum
20 Lockwasher, split, 5/16" 65
Tube, Boom, swaged, 2" x
23 Bolt hex head
5/16" 66 Clam
Boom-to-Bracket
31
Bolt
hex head, 1/4"-20 X 3/4" 67 Bracket, Casting-to-Boom
Select the boom-to-bracket damp parts (Item Nos. 66 & 67). Loosely
assemble them on the boom ends (Item No. 65), as shown in Figure 1. Line
up the holes on both brackets and both boom ends. Secure the two brackets
together with four (4) 1/4"-20 X 3/4" bolts, lockwashers, and nuts. Secure the
brackets to the two boom ends using the 5/16"-18 x 2 314" bolts,
lockwashers, and nuts. Tighten these six (6) bolts securely. The use of heavy
motor oil on stainless steel threads will prevent galling of threads.
Assemble the two cast aluminum brackets (Item No. 59) on the mast at the
desired height above your tower. Secure the two brackets together using the
two (2) 5/16"-18 x 4" bolts, lockwashers, and nuts. You may wish to drill a
hole through your mast so that the remaining 5/16"-18 x 4" bolt may be
inserted through the cast brackets and the mast and tightened. This bolt will
prevent the antenna from twisting on the mast in high winds. See Figure 1.
The four (4) 5 inch bolts will be installed when the antenna is installed on the
Slip the two remaining boom sections (Item No. 57) over the two swaged
ends of the assembled boom and secure using (2 each) 1/4"-20 x 2 1/2" bolts,
lockwashers
and nuts as shown in Fi
ure 2.
Figure 1 Boom-to-Mast
CHAPTER 8
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