Craftsman 139.53901DM1/2 HP Manual Del Propietário página 14

INSTALLATION STEP 3
Attach the Raft 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 5/16"x1-1/2"
as shown.
• Insert a ring fastener to secure.
Header W all
Header B racket
IdlerPulley
Header
\
\
Mounting
Hole
__ Garage
Door
Opener C artonor
__ Temporary
Support
HARDWARESHOWN ACTUALSIZE
oD@
ClevisPin5/16"x1-1/2" RingFastener
14