Installation Guide

© 2013, The Chamberlain Group Inc.
114A2747F All Rights Reserved
To avoid possible SERIOUS INJURY from a falling garage door
opener, fasten it SECURELY to structural supports of the garage.
Concrete anchors MUST be used if installing any brackets into
masonry.
REPLACEMENT PARTS
Part No. Description Qty
183C158-14 Header Rail Extension 1
41A5807-2 10' Chain/Cable Assembly 1
183C157-10 Center Rail Section 1
41A3021 Rope 1
4A1008 Master Link Kit 1
Hex Bolt
5/16"-18x7/8"
Nut 5/16"-18
Lock Washer 5/16"
Hanging Bracket (Cross Brace) Not shown actual size
HARDWARE SHOWN ACTUAL SIZE
ADDING AN ADDITIONAL HANGING BRACKET:
Cut the enclosed hanging bracket (cross brace) to fit across the installed
hanging brackets. Fasten the cross brace to the top and bottom hole of the
hanging brackets (Figure 3 and Figure 4) using 5/16" -18x7/8" hex bolts,
5/16 lock washers and 5/16" -18 nuts.
Figure 3 Figure 4
Lock Washer 5/16"
Nut 5/16"-18
Lock Washer 5/16"
Nut 5/16"-18
Bolt 5/16"-18x7/8"
Hanging Bracket
(Cross Brace)
Lock Washer 5/16"
Nut 5/16"-18
Lock Washer 5/16"
Nut 5/16"-18
Bolt 5/16"-18x7/8"
Hanging Bracket
(Cross Brace)