Outer Limits 4x4 Board

Ok this what happened on my 98 hilux single cab tray back, ifs, driving along with about a half tonne (maybe more) of stuff on, for the tip, went over some good rough pot holes on the way in and heard a bloody great bang come from the rear end, didn't think much about it until I noticed when I got home the drivers side rear had dropped almost 2', the first thing I thought was a broken leaf spring (which wouldn't surprise me) but after having a good look at the leaf's there was none broken, I've had an extra leaf on both sides put in some time ago but everything looks normal, what do you guys reckon, I must say when I go bush she has a good load on but this has me stumped, could it be some sort of pre-stress thing, any ideas guys and should I look at new springs or get them reset..thanks....Les

Sounds strange for a spring to flog out so quick.

Can't help but wonder if the shackle has inverted on itself or got bent in transit?

spring may have fractured and you wont see it, youl need to pull the spring pack apart to tell.

Shackle isn't inverted is it, my old lux use to do this after I had extra leaves put in it, use to make a almighty bang when it flipped up.

agree with the other guys-take them out and sit them side by side and look for any damage-similar thing happened to me-I had bent 2 springs in the pack-had them re sprung but only lasted a short time before they sagged again-ended up re building the pack added 2 extra leaves-OK so far.