Chamberlain Whisper Drive WD822C Manuel Du Propriétaire page 15

Header Wall
Header
Bracket
Belt Pulley
Bracket
Garage
Door
HARDWARE SHOWN ACTUAL SIZE
Clevis Pin
5/16"x2-3/4"
INSTALLATION STEP 3
Attach the T-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.
Ring
Fastener
Header
Bracket
Clevis Pin
5/16"x2-3/4 "
Belt Pulley
Bracket
T-rail
Temporary
Support
Ring Fastener
15