Attach The Rail To The Header Bracket - Chamberlain LiftMaster 3275C Owner's Manual

Header Wall
Header Bracket
Chain Pulley
Bracket
Garage
Door
HARDWARE SHOWN ACTUAL SIZE
Clevis Pin
5/16"x2-3/4"
INSTALLATION STEP 3

Attach the Rail to the Header Bracket

• Position the opener on the garage floor below the header
bracket. Use packing material as a protective base.
NOTE: If the door spring is in the way you'll need help. Have
someone hold the opener securely on a temporary support to
allow the rail to clear the spring.
• Position the rail bracket against the header bracket.
• Align the bracket holes and join with a clevis pin as shown.
• Insert a ring fastener to secure.
Rail
Header Bracket
Clevis Pin
5/16"x2-3/4"
Ring Fastener
10
Ring Fastener
Chain
Pulley
Bracket
Rail
Temporary
Support