Installation step 3 – Craftsman 139.53664SRT2 User Manual
Page 15
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Installation Step 3
Attach the T-rail to the Header Bracket
Header Wall
• Position the opener on the garage floor below the
header bracket. Use packing material as a
protective base.
If the door spring is in the way you'il need heip.
Have someone hold the opener securely on a
temporary support to aiiow the T-rail to clear the
spring.
• Position the belt pulley bracket against the header
bracket.
• Align the bracket holes and join with a clevis pin as
shown.
• Insert a ring fastener to secure.
Hardware Shown Actual Size
Clevis Pin
5/16"x2-3/4‘
o
Ring Fastener
15
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