Warranty

17
Step 38: Extension Spring Assembly
29FF
67
Assemble spring as shown. Bolt a clevis and
pulley on one end
4
Both springs are the same, it will not matter which one you assemble fi rst.
The spring cable is thicker than the safety cable. Be sure to use the correct cable for the appropriate step.
Thread safety cable through spring assembly. Clip the cable on the S Hook.
5
Warning! Extension springs can cause severe damage, personal injury or even death if they are not properly
restrained. In the event of a spring failure the safety cable will prevent the spring from being propelled away
from the door.
Pulley
Clevis
3/8” x 1-1/2” Bolt
Extension Spring
Safety
Cable
You will need for this page:
Extension
Spring
2
Pulley
2
3/8” x 1-1/2” Bolt
and Hex Nut
2
Safety Cable
2
Clevis
2
Hex Nut
S Hook
Spring Support
Bracket
Extension
Spring
Assembly
Hang the hook attached to the spring assembly end
to the spring support bracket.
6
S Hook
2
S Hook