Chris wrote in
:

Hi,

I'm after a bit of advice on retensioning my Henderson garage door
(metal up and over door with a spring running across the door frame
above the door and wires on cones running down to the sides of the
door).

Just to make sure I've got it right, I have the door down and the
cones and shaft locked off with a pin. I slacken the grub screws that
attach the spring to the shaft, then use tommy bars to tension the
spring before retightening the grub screws.

The big question is, which way do I turn the spring? Do I tighten the
spring so that as the door opens it unwinds, or do I unwind the
spring so that as the door opens it tightens?

Mine has a blue cone on the right (looking from inside) and a whire one
on the left.

The wires roll up on to the side of the cone nearest the door - I don't
think it could be otherwise, the wire would foul something.

The top of the spring rolls towards me when I open the door.

I don't know if it's correctly installed - it was put in by Norm next
door when he bought a caravan, and sized up his car, his garage, and his
garage door - but it works.

HTH

mike