Installation Instructions

4
Installing Safety
Containment Kit
WARNING
Garage door extension springs can cause
serious injury and property damage if they
break under tension and are not secured
with safety cables. Do not neglect the
following step.
Step 8:
Tie one end of the 1/8" containment cable to the
rear track hangers. Tie the cable as shown in the
illustration (Fig. EXT-9). Thread the cable through
the center of the extension spring and through the
bushing in the sheave fork. Tie the remaining end
to the horizontal angle as shown. This must be
done for each of the springs.
NOTE: If your door has four extension springs,
tie the upper containment cable to an angle clip
mounted to the jamb. (Fig. EXT-9)
To adjust extension spring tension, use
two C-clamps to carefully clamp the door in
the open position. Tension can be changed
by moving the S-hooks to different holes in
the horizontal track angles or by adjusting the
cable in the three hole clip. Both sides must
be adjusted equally. Moving the hooks closer
to the door opening increases tension.
Tension can also be adjusted slightly by
releasing spring tension and relocating the
eyebolts higher on the track hanger. When
reinstalling, the higher the eyebolt, the greater
the tension.
WARNING
Use extreme care when readjusting
extension springs and make sure that the
door is carefully secured by C-clamps in
the open position before you begin.
When the door is closed, the springs and
mounting hardware are under extreme
tension and are potentially dangerous.
Angle
Clip
4" Sheave
Mount
Plastic
Bushing
Containment
Cable
Containment Cable
Warning
Tag
Warning
Tag
Single
Spring Assembly
Double
Spring Assembly
Fig. EXT-9
SUP_0137180-R01-0614