On Wednesday, November 23, 2016 at 3:51:37 PM UTC-5, wrote:
On Wed, 23 Nov 2016 05:54:39 -0800 (PST), wrote:

I would not work on any garage door while the springs were in tension.

It is very dangerous. I mean lethally dangerous.

Only a complete IDIOT would work on garage door springs, with the
springs under tension. Having one of them springs come loose is very
similar to having a gun fire. I once saw the results of a broken spring,
and a piece of the bracket was embedde in the garage wal


If you can do the job with the door open and therefore all tension released from the springs, that is far safer.

Just make sure the door cannot roll down and close unexpectedly.


Clamp a vicegrips on to the track below one of the rollers. That way it
cant roll down. I usually put a vicegrip on both sides of the door, in
case one of the rollers was to come loose. A 2x4 propped under the door
helps too, but that can easily fall down if the door is moved, so the
vicegrips are a lot safer. (Better yet, use both the vicegrips and the
2x4).

Wood clamps work well too. I have more wood clamps than vice grips. I used
4 clamps. Belt and suspenders.