Installation Of The First Gate Opener; Install Post Bracket Assembly And Gate Bracket - Nortek Security & Control Mighty Mule HD272 Installation Manual

Installation of the FIRST Gate Opener

IMPORTANT: Determine which side of the driveway you will mount the control box. From this point on, the gate and gate
opener on the same side as the control box will be referred to as the FIRST gate and gate opener. The gate and gate opener on the
opposite side of the driveway from the control box will be referred to as the SECOND gate and gate opener.
We recommend you position the opener near the centerline of the gate to keep the gate from twisting and flexing and to avoid
back splash from rain water.
The Post Bracket Assembly
The position of the post bracket assembly determines the
leverage and efficiency of the opener. The post bracket
assembly position also sets the clearance between the
opener and the gate in the open and closed positions.
The post bracket works well for installations on round
and square fence posts. Because the post bracket
carries the entire thrust of the active opener, bolts must
completely penetrate the post.
On wood posts, place a metal plate or washer (not
supplied) between the nuts and the post to prevent the
thrust of the opener from pulling the bolts and washers
out of the wood.
The post pivot bracket may not be necessary on posts
larger than 6" in diameter (see page 6). Fence posts
smaller than 6" in diameter or 6" square should be made
of metal instead of wood to remain stable while the
opener is moving the gate.
Reinforcing Gates for the Gate Brackets
We recommend using a muffler clamp, wood, or metal, to reinforce thin-walled tube gates, or wood to reinforce panel gates as
shown. These reinforcement methods will prevent damage to the opener and gate. Additional hardware may be needed depending
on the installation.
Muffler Clamp
(not supplied)
Muffler Clamp for
Gate Bracket
Wood or Metal
Reinforcement
Gate Bracket
Wood or Metal
Reinforcement
(not supplied)
7
HD272 Installation Instructions
Metal Plate
Wooden Post Metal Plate
Wooden Post
Post Pivot
Bracket
Post
Post
Bracket
Bracket
Post Post
Pivot Bracket Bracket
Post
Pivot Bracket Post Bracket
Assembly
Gate Bracket
Thin Walled
Tube Gate
1" x 6" Wood
Reinforcement
Gate
Bracket
Panel
Gate
1" x 6"
Wood
Reinforcement

Install Post Bracket Assembly and Gate Bracket

Step 1
3 1
Insert the / " x 1 / " bolt through the center hole of the post brackets and post
8 4
3 3
pivot bracket. Secure with a / " washer, / " lock washer and
8 8
overtighten the nut (the post pivot bracket will have to be adjusted later).
Step 2
Attach post bracket assembly to the rear mount of the opener with a clevis pin.
Secure the clevis pin with a hairpin clip.
Step 3
Attach gate bracket to the front mount of the opener with a clevis pin. Secure the
clevis pin with a hairpin clip.
Clevis Pin
Rear Mount
Post Bracket Assembly
Hairpin Clip
Step 4
With the gate in the fully open position and the opener arm fully retracted,
adjust the post bracket assembly and gate bracket until the opener is level. While
holding the opener level, use C-clamps to temporarily secure the post bracket
assembly and gate bracket to the post and gate.
Post Bracket Assembly
Level Opener
Fence Post
3
/ " nut. DO NOT
8
3 / " x 1 1 / " Bolt
8 4
Post Pivot Bracket
Post Bracket
3 / " Washer
8
3 / " Lock Washer
8
3 / " Nut
8
Front Mount
Gate Bracket
Hairpin Clip
Gate in Open Position
Opener Arm Fully Retracted
Gate Bracket
HD272 Installation Instructions
Clevis
Pin
8