Attach The Rail To The Header Bracket - Chamberlain 3850 Owner's Manual

Header Wall
Header
Bracket
Belt Pulley
Bracket
Garage
Door
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.
Header
Bracket
Clevis Pin
5/16"x2-3/4"
Belt Pulley
Bracket
HARDWARE SHOWN ACTUAL SIZE
Clevis Pin
5/16"x2-3/4"
10
Ring
Fastener
Rail
Temporary
Support
Ring Fastener