Craftsman 139.18054 Owner's Manual page 5

Planning (continued)
ONE-PIECE DOOR INSTALLATIONS
• Generally, a one-piece door does not require
reinforcement. If your door is lightweight, refer to
the information relating to sectional doors in
Installation Step 11.
• Depending on your door's construction, you may
need additional mounting hardware for the door
bracket (Step 11).
ONE-PIECE DOOR WITHOUT TRACK
Safety Reversing Sensor
ONE-PIECE DOOR WITH TRACK
Safety
Reversing Sensor
Access Door
Safety Reversing Sensor
Gap between floor and bottom
of door must not exceed 1/4" (6 mm)
Access
Door
Safety
Gap between floor
Reversing
and bottom of door
Sensor
must not exceed
1/4" (6 mm)
WARNING
Without a properly working safety reversal system,
persons (particularly small children) could be
CAUTION
SERIOUSLY INJURED or KILLED by a closing
garage door.
• The gap between the bottom of the garage door and
the floor MUST NOT exceed 1/4" (6 mm). Otherwise,
the safety reversal system may not work properly.
• The floor or the garage door MUST be repaired to
eliminate the gap.
CLOSED POSITION
Trolley Stop Bolt
Header
Bracket
Door Bracket
Straight
Door
Arm
Header
Wall
Garage Door
Trolley Stop Bolt
Header
Wall
Header
Bracket
Door
Bracket
Garage
Door
5
Trolley
Cable
Rail
Emergency
Release
Rope & Handle
Curved
Door
Arm
CLOSED POSITION
Chain
Cable
Curved
Rail
Door Arm
Emergency
Release
Straight
Rope &
Door
Handle
Arm