Attach the rail to the header bracket – Craftsman 139.53918d User Manual
Page 14
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Attach the Rail to the Header Bracket
NOTE: (Optional) With some existing installations, you
may re-use the old header bracket with the two plastic
spacers included in the hardware bag. Place the spacers
inside the bracket on each side of the rail, as illustrated.
• 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 will
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.
INSTALLATION STEP 3
OPTION WITH
SOME EXISTING
INSTALLATIONS
Opener Carton or
Temporary
Support
HARDWARE SHOWN ACTUAL SIZE
O
Clevis Pin 5/16''x1-1/2”
O
Ring Fastener
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