Hughes DW 3000 One-Way Installation Manual page 22

INSTALLING THE MOUNT ON A WOOD FRAMED ROOF
16. Fill the holes with silicone sealant.
17. Install a 3/8-inch washer on each of the 3/8-inch x 2-inch
lag screws.
18. Use a 9/16-inch socket wrench to screw the lag screw into
the four holes. Note: do not overtighten the screws. You may
strip the screw threads.
19. Re-plumb the mast and snug down the four screws firmly.
20. Use a 1/2-inch socket wrench to loosen the mast adjustment
nuts and swing the mast down so you have access to the bot-
tom center hole.
21. Repeat steps 6 and 7 to drill holes for the bottom center
hole. Note: the base plate must not move when you drill
the hole.
22. Fill the holes with silicone sealant.
23. Install a 3/8-inch washer on the 3/8-inch x 4-inch lag screw.
24. Use a 9/16-inch socket wrench to screw the lag screw into
the lower center hole. Do not tighten the screw fully.
25. Re-plumb the mast and snug down the lag screw.
26. Use a torque wrench to sung down the mast adjustment nuts
to 18 ft.-lbs. Confirm the mast is plumb after torquing.
Note: The mast must be plumb before you can proceed. If you cannot
plumb the mast, repeat the installation or find another installation site.
INSTALLING THE BRACE KIT
1. Slip the short 18-inch strut collar onto the mast as shown in
Figure 17.
2. Secure the collar to the mast by using a 7/16-inch socket
wrench to tighten the Nylock nut installed on the bolt.
3. Position the strut mounting plate below the mast and base
plate so the two screw holes are exactly in line vertically
with the mast base plate center holes (see Figure 18).
4. Mark the center of the mounting plate top center hole (see
Figure 17).
5. Drill a hole on the center mark in the manner described
below. Note: to avoid drilling too deeply, wrap a piece of
masking tape around the drill bit shank at the proper depth
so that you can see when you should stop drilling.
Drill a 5/32-inch hole 4 inches deep.
Going into the 5/32-inch hole, drill a 1/4-inch hole to a
depth equal to the unthreaded portion of the 1/4-inch x
4-inch lag screw.
6. Fill the holes with silicone sealant, and apply silicone seal-
ant to the bottom of the mounting plate.
7. Install a 1/4-inch washer on the 1/4-inch x 4-inch lag screw.
8. Use a 7/16-inch socket wrench to screw the lag screw into
the mounting plate hole. Note: Do not pound the lag screws
into the rafter with a hammer or mallet. Doing so may split
the wood and damage the rafter or truss.
18
Figure 17
Center line
Top center hole
Bottom center hole
Figure 18