Craftsman 139.18865 Owner's Manual page 5

ONE-PIECE Door Installation
Before you begin, survey your garage area to
see whether any of the conditions below apply
to your installation.
Safety Reversing Sensor
Based on your particular requirements, there are
several installation steps which might call for
materials and/or hardware not included in the carton.
• Step 1, page 13 - Look at the wall or ceiling above
the garage door. The header bracket must be
securely fastened to structural supports.
• Step 5, page 17 - Do you have a finished ceiling in
your garage? If so, a support bracket and
Closed Position
additional fastening hardware (not supplied) may
Cable
be required.
Pulley Bracket
Cable
• Safety reversing sensor, page 21 - Depending on
garage construction, wood blocks may need to be
securely fastened to mounting locations before
Header
sensors are installed.
Bracket
T-rail
• Step 10, page 22 - Alternate floor mounting of the
safety reversing sensor will require hardware that
Door Bracket
is not provided.
• Step 11, page 25 - Generally, a one-piece door
Straight
does not require reinforcement. If your door is
Door
Arm
Header
lightweight, you can refer to the information
Garage
Wall
Door
relating to sectional doors on page 24.
• Step 11, page 25 - Depending on your door's
construction, you might need additional mounting
hardware for the door bracket.
• Do you have an access door in addition to the
garage door? If not, Model 18752 Outside Trolley
Release is required. See page 38.
• The gap between the bottom of the garage
door and the floor cannot exceed 1/4".
Otherwise, the safety reverse system may not
work properly. See page 30. The floor or the door
should be repaired.
Header
Wall
Gap between floor and bottom of
door must not exceed 1/4"
Trolley
Emergency
Release
Curved
Rope & Handle
Door
Arm
One-Piece Door without Track
Access Door
The Chamberlain Group, Inc.
One-Piece Door with Track Installation (Cable - Canada)
3/3/93
Safety
Reversing
Sensor
Header
Wall
Garage
Door
You may find it helpful to refer back to this page
as you proceed with the installation of your
opener.
5
Safety Reversing Sensor
Closed Position
Cable
Pulley Bracket
Cable
Header
Bracket
T-rail
Door Bracket
Straight
Door
Arm
Header
Garage
Wall
Door
One-Piece Door with Track
When Garage Door is Closed
Floor must be level
Safety
across width of door
Reversing Sensor
Closed Position
Cable
Pulley Bracket Cable
You may find it helpful to refer back
Header Curved
Bracket Door Arm
to this page as you proceed with the
installation of your opener.
Straight
Door Door
Bracket Arm
Gap between floor and bottom of
door must not exceed 1/4"
Trolley
Emergency
Release
Curved
Rope & Handle
Door
Arm
Slack in Chain
Tension is Normal
Access
Door
Safety
Reversing
Sensor
Chain
Trolley
T-Rail
Emergency
Release
Rope & Handle
S
Re
S