Chamberlain 9950D User Manual download pdf (Page 14)

14

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

5/16"x2-3/4" as shown.

• Insert a ring fastener to secure.

Header Bracket

Rail Bracket

Opener Carton or

Temporary

Support

Header Wall

Garage

Door

Rail

Clevis Pin

5/16"x2-3/4"

Ring Fastener

Header Bracket

Rail

Bracket

Rail

Clevis Pin

5/16"x2-3/4"

Ring Fastener

HARDWARE SHOWN ACTUAL SIZE

1 2 ... 9 10 11 12 13 14 15 16 17 18 19 ... 39 40

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