4a.
Elevate powerhead assembly and position door
end rail section (C) inside bracket.
note
:
Support powerhead and have a
second person assist during this step.
4b.
Align holes in rail with holes in bracket.
4c.
Slide clevis pin through holes in rail and
bracket and secure with speed nut by
pressing the speed nut ends together.
Protective
foam cushion
5a.
If possible, lift and support powerhead while a second person
fully opens the door.
Insert a 2" x 4" board, cardboard
or towel between door and rail, to protect door.
Position
powerhead over the centerline of door and allow it to rest on
board. Otherwise, measure and mark ceiling 114" back from the
header, aligned with the centerline of the door.
5b.
Angle the mounting straps (G) and attach to joists with
two 5/16" x 1-3/4" lag screws provided in the green
bag. For finished ceilings, attach a cross-piece
(not
supplied)
to joists using lag screws and secure
mounting straps to the cross-piece with 5/16"-18
bolts and nuts
(not supplied).
5c.
Raise powerhead unit so that there is sufficient
clearance between door and rail. Cut or bend
mounting straps as needed to align with the
powerhead and level rail.
5d.
Secure powerhead to mounting straps using 5/16"-18
- 3/4" bolts and nuts provided in green bag. Ensure
powerhead is centered with the door and
remove
the 2"x 4" board and/or other protective material.
C
4a
Header
bracket
C
4b
4c
Speed nut
Speed nut
Clevis pin, Long
5a
NOTE:
Rail should be level to floor. For tall garage
ceilings additional hanging angle and hardware
may be required and is available at leading
retail stores.
Door track
Door
Protective material to prevent
damage to the door
114"
Door
centerline
Cross piece
location
114"
G
5b
G
5b
Hidden
joists
Lag screw
5/16" x 1-3/4" Lag screws
Cross piece
(not included)
5/16"-18
bolts & nuts
(not supplied)
Attach
to joists
5d
Lag screws
5/16" -
18 - 3/4"
Bolt
Lag screws
5d
5/16" - 18 - 3/4"
Bolt
5/16" - 18
Nut
5/16" -
18 - 3/4"
Bolt
open Beam Ceiling
Finished Ceiling
AttAChIng rAIl to
brACKet
(oranGe BaG)
mountIng poWerheAd
to CeIlIng
(Green BaG)
Squeeze ends of speed nut to
install on pin.
