Be safe: Keep to side of garage spring.
Do not let anyone stand in front of the work area when winding or unwinding spring.
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How to replace garage door spring
Broken spring must be repaired for safety and paractical usage.
Temporarily wedge a 2x4 under the open door to hold it open until repair is made, or leave the door closed.
Step 1: Identify broken spring/ cautionsTwo springs are recommended on each garage door
If your 1-spring door feels heavy. Install second spring
If the spring breaks on 1-spring door, the heavy door can crash down. You will be unable to lift door.
A 1-spring door can be dangerous. Install second spring
On 2-spring door, generally both springs do not break same time
2-spring garage doors are safer
Springs are responsible for holding the full weight of the garage door.
On 2-spring door, sometimes one spring will break.
Symptom: the garage door feels heavy to lift.
Symptom: The automatic opener might grind to a halt before door is open, or opener might sound like it is straining.
It is only necessary to replace the broken spring
Know the safety tipsWatch video how to install spring with safety tips
Step 2: Remove broken springWith a 2-spring door, there is one spring located on each side of center. When one spring is broken, the other spring is holding all the weight.
The unbroken spring is coiled very tight. You must act with caution.
There is incredible force on these springs/ up to 30 turns of torsion
The unbroken spring must be unwound before removing the broken spring. This is simple enough, when you know the safety precautions.
For example, professional winding bars fit the opening exacly and will not come loose easily. If some other bar is used, it can easily slip out out of the hole and the heavy spring is suddenly uncontrollable. Do not let anyone stand in front of the spring.
Method for removing the unbroken spring is to insert 1 winding bar to hold the spring from unwinding, loosen nuts with 7/16" wrench, and then use two professional winding bars to slowly unwind the spring.
Buy 2 hex winding bars to remove tension off good spring
Watch video showing how to unwind the good spring
Watch video showing tools and tips
Step 3: Measure length of spring, measure diameter of spring, count the number of coils, identify right and left wound springLet Tommy Mello show you how
See techniqe and charts to correctly identify and order the spring
Watch Tommy's video
Step 4: Order parts/ fast, guaranteed serviceTake care of business professionally
Fed Ex delivery
Here's the link for ordering parts
Step 5: Install spring using Tommy's step-by-stepLet Tommy show you how
Use same hand each time you move the bar. Do not get cross-handed or the bar can slip.
For example, this photo shows Tommy using left hand to lift the bar. He uses the same hand each time.
Watch video how to install spring with safety tips
Step 6: Finish the jobPlug in the opener
Put away the step ladder
Clean out garage
Lift weights for two hours
Go to work tomorrow and take over company
You can do it
Read more of Tommy's work on about.com
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