9 secure gate bracket to gate, 10 secure post bracket to gate post – Chamberlain RESIDENTIAL GATE OPERATOR GA420D User Manual
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Installation
Secure the post bracket to gate post using hardware. The gate operator (arm) must be level.
Secure Gate Bracket to Gate
Remove the operator from the brackets. Mark and drill holes in gate or reinforcement (if necessary) according to
gate bracket mounting hardware. Secure the gate bracket to gate using hardware (not provided).
NOTE: The gate bracket can be secured to the gate using a welder (optional).
Lock Washers
Flat Washers
Hex Nuts
Carriage Bolts
9
10
Lock Down Bolt 1/4"-20
Welder Optional
Hex Nut
Flat Washer
Lock Washer
Gate
Bracket
5/16"-18 U-Bolt
NOTE: For mounting on flat
surfaces, use 5/16"-18 Hex Bolts (4)
through slots instead of U-Bolts.
Secure Post Bracket to Gate Post
Mark holes for the post bracket. Remove the clamp and operator. Drill clearance holes for 3/8"-16 bolt in gate post.
NOTE: The post bracket can be secured to the gate post using a welder (optional).