Wayne Dalton Trolley Arm Attachment Operator Bracket - Express Garage Doors
Springs

Wayne Dalton Trolley Arm Attachment Operator Bracket

106 reviews

SKU: WD-322984

Old Part Number: 320787
Description

Wayne Dalton Trolley Arm Attachment Operator Bracket

Wayne Dalton garage door opener bracket for connecting your chain, screw or belt drive garage door opener to your door. Fits directly over top section of garage door and attaches to built in strut. For models 9100, 9600, 5120, 5140.

Includes:
  • Garage door opener bracket 320787
  • Hardware bag 321475
  • Installation instruction manual

Specs:

  • 4-1/2" Wide
  • 2-3/4" Tall, with 15/16" flange at bottom
  • 6 - 13/64" drilled bolt holes on back of bracket
  • 2 - 11/64" screw holes on front top lip of bracket
  • Riveted clevis with 13/32" diameter clevis pin hole
  • Constructed of 16 gauge galvanized steel.
Compatibility
Compatible with:
  • Compatible with all Wayne Dalton 9100, 9600, 5120, and 5140 doors
Instructions
Installation Instructions - Click here to download manualOld Part Number: 320787
Reviews
FAQs
Why Does My Garage Door Only Open a Few Inches?

Why Does My Garage Door Only Open a Few Inches?

September 10, 2025 2 min read

Does your garage door start to lift but stop after just a few inches This is one of the most common signs of a broken spring. Here’s why it happens and how to fix it safely.

Read More
Broken Garage Door Spring Test

#1 Best Way to Diagnose a Broken Garage Door Spring

September 10, 2025 2 min read

Not sure if your garage door spring is broken This simple test will help you diagnose the problem quickly so you can stop guessing and take action.

Read More
Why won't my garage door open?

Why Won’t My Garage Door Go Up? #1 Reason

September 10, 2025 2 min read

Garage door stuck and refusing to open The most common culprit is a broken spring. This guide shows you how to spot the signs, understand the cause, and fix it safely.

Read More
Description

Wayne Dalton Trolley Arm Attachment Operator Bracket

Wayne Dalton garage door opener bracket for connecting your chain, screw or belt drive garage door opener to your door. Fits directly over top section of garage door and attaches to built in strut. For models 9100, 9600, 5120, 5140.

Includes:
  • Garage door opener bracket 320787
  • Hardware bag 321475
  • Installation instruction manual

Specs:

  • 4-1/2" Wide
  • 2-3/4" Tall, with 15/16" flange at bottom
  • 6 - 13/64" drilled bolt holes on back of bracket
  • 2 - 11/64" screw holes on front top lip of bracket
  • Riveted clevis with 13/32" diameter clevis pin hole
  • Constructed of 16 gauge galvanized steel.
Compatibility
Compatible with:
  • Compatible with all Wayne Dalton 9100, 9600, 5120, and 5140 doors
Instructions
Installation Instructions - Click here to download manualOld Part Number: 320787
Reviews
FAQs