Assembly
3 Tighten the Chain
1.
Loosen the inner nut and lock washer on the trolley threaded shaft.
2.
Tighten the outer nut until the chain is a 1/2" above the base of the rail at the midpoint of the rail.
3.
Re-tighten the inner nut.
Slack in the chain is normal when the door is closed. No readjustment is necessary.
1/2" (13 mm)
14