Chris is absolutely correct.
Originally Posted by The Slug
[Which trailer do you have?]
I asked the same question when i ordered all the parts and the chap said that the damper shouldn't push in with the pressure of reversing
so now I'm confused. Sorry if this is irritating i just like to know how things work.
Someone's telling you porkies!
They have an auto reverse mechanism. Of course the damper will push in, as it's inertia driven (frustration not directed at your btw! Just get annoyed when people in the industry don't help dispel the black-art rumours of trailers!).
The magic (auto reverse) happens in the brake drum.
Often people adjust the brakes by tightening up at the cables; though not often possible with Alko, as they generally have a 'mushroom' swage end to the compensator end of the cables, where as Knott have an 8mm threaded end. Anyhow, I digress!...
To adjust your Alko brakes (once you've jacked the wheels up off the floor), have a look on the inner face (towards the trailer chassis) of the brake backplate. You should have two green plugs. The one on the outer edge is to check the brake shoe wear, without having to remove the drum, but the one you're interested in is nearer the centre by a couple of inches and has a letter 'C' stamped next to it, along with a directional arrow.
Pop this green plug off and insert a small, flat bladed, screwdriver in to the hole and rotate the star wheel adjuster in the direction of the arrow, whilst rotating the wheel forward
. Do not rotate it backwards / reverse direction, whilst adjusting, or you'll engage the auto reverse system.
Keep rotating the wheel forward
, whilst adjusting the star adjuster in the direction of the arrow, until the wheel locks up. Then adjust the star wheel in the opposite direction until the trailer wheel just frees up. Then pull the handbrake on and off a couple of times, to settle things inside. You should have about 4 to 6mm movement on the bowden cables when adjusted correctly. Remember - always rotate the trailer wheel forward.
Do this for each of the four wheels and you should be good to go.
Oh, did I mention - only rotate the trailer wheels forward, when adjusting the brakes
Any probs, feel free to drop me a line.