Replacing side cables on garage door?

[preecy]

One of the side wires on our garage door snapped. I've picked up

couple of spare replacement cables however i've just had a quick loo at the garage door and it doesnt look as straight forward as i firs thought. Its a canopy style door with a tentison spring above the door As far as i can see i dont need to touch the tention bar/spring so i doesnt look like a danagerous task. Has anyone got a link to a step b step guide on replaing these cables?

thanks in advanc

-- preecy

[Harry Bloomfield]

preecy pretended :

The cable links one end of the spring to the sliding bolt part of the door. The spring and attached wire will need to be under a great deal of tension, before the other end of the cable can be hooked onto the door bolt.

The method I use is to start with the door closed and the hook on the door by the bolt exposed. Fix the cable end on the spring, loop it around the pulley, then make a loop of several turns of thin steel wire, to which a rope can be attached. You cannot attach a rope directly on the end of the cable, because it will get in the way of trying to hook the cable end onto the door hook.

Pulling straight down on the rope should now tension the spring. I find that the final few inches needs you to loop the spring under your foot, so that you can get your full weight on it.

Once you have stretched it a little beyond what is needed, the cable needs to be clamped to allow you to hook it onto the door bolt. I manage to do this with the aid of a couple of self grip wrenches, tightly clamping the cable against the steel door frame. Finally hook it onto the door, release the clamps and test the tension is correct. If it is, you can then cut the steel wire and remove them and the rope.

Wear plenty of well padded clothes goggles and perhaps a hard hat just in case something snaps and the spring starts flailing about - they can injure you.

[Robbo]

Note the direction of winding for the cable. Find the locking mechanism for the tension roller and spring, if none there wedge/block or otherwise retain the unit from revolving Remove broken cable Re-wind in correct direction the new cable, and secure properly Release the tension unit and adjust the slack in the cable until the door opens and closes in parallel for each side.

Tinker around until correct

[Alex]

do you know the manufacturer of the door,Henderson and Cardle have torsion springs above the door,Garador have torsion on their doors in the last 4 years,previous to this they had a spring box arrangement,post type and will give instructions,if it is a king door to dangerous do not touch

Alex

[Graham]

Have the loops at the end have parted like mine did? I repaired mine some years ago using the insides of a couple large electrical "chock-block" connecters in place of the original crimp.