Oh gees. Mechanical stuff fails....that is the nature of mechanical things. I must actually use my equipment a little harder than some I guess. I don't have a build in load-o-meter to tell me exactly when the point of failure is for a Hi-lift. They get used....they can fail, it is as simple as that. Keeping them perfectly clean doesn't happen in the real world when using them in bad conditions.
The majority of damage to hi-lift jacks and FROM hi-lift jacks I have been part of over the years is from load shifting. When you are lifting the vehicle an extra few FEET in the air than you need to sometimes ( by the very function of perimeter jacking ) stuff happens. You can try and keep things as stable as you can. You can stack cribbing (because everyone carries enough of that) to help stabilize things. You can check every box in the world.....eventually stuff happens. That is just the nature of vehicle recovery. Not putting yourself in those positions is the best worst plan.
That is where using a hi-lift jack ( or other perimeter/farm jacks ), especially for complex vehicle recovery, falls apart.
Everyone loves to preach about how the hi-lift is alternative for all these uses like winching, but just look at the crappy dangerous winch system you are creating. The operator has to be right in the danger zone the entire time, this is winching 101 stuff but everyone just gives a hi-lift a pass? It's flat out dangerous, it always has been, it always will be.
I've been doing this a pretty long time. I've used a hi-lift extensively. I have moved on. That's Nice that you can afford to.
One area the ARB actually improves on the Hi-lift. It removes the danger of the handle energy storage between pin-locks
Anyone that has ever really used a hi-lift in a bad situation knows that moving the jack handle between clicks can bring the click if you don't have the perfect position available. .
It is one thing to stand in a field doing a demo on flat ground.....it is another to be on the side of a mountain in the ice or snow.
Note: I would love to see them modify the hydraulics to allow use in any position,
It also makes the jack system safer when letting it down. That is a downside to the hi-lift system. No pin-position handle force issues.
I still don't like either one.
You Can Not Blame the Jack At All, because the Human is the One who is meant to have the Brains and If they do not assess the situation correctly and it all goes wrong then you can't Blame the Jack, And If you do then that means you have been Out smarted by something with ZERO IQ and more accident can be expected.
AND No the operator does not have to stand in the danger zone, They can stand in front of it or beside it or in it and you are wrong the Hi-Lift is a Good Alternative, you seen to forget that a lot of folks are on very Low Incomes So a Winch is totally out of the question so they have 2 options, 1) leave the Truck Stuck where it is, Or 2) buy a Hi-lift and with a fair bit of effort retrieve their stuck Vehicle.
It's nice that you can afford to move on, Not everyone has that choice,
Again that boils down to taking Care and focussing on the task at hand.
I have used mine in all those environments and more, The thing to do is partially Raise the Vehicle and evaluate the situation from a safety point of view and if you have any concerns then lower the Jack and reposition the Jack and keep doing that until you are happy with the results, It's So Easy to blame the Jacks But when used correctly a Hi-Lift is 99.99% perfect, Add the Human element and that's when things go wrong and the Blame belongs to the Human element Not the Jack, After all the Human is the one who is meant to have the Brain out of the two,
Again this boils down to maintenance Because as One Pin moves Up or Down the Other Pin remains in it's locked/support position until the other Pin is Engaged and then the Second Pin releases as it moves up or down and they repeat this cycle from one end of the Bar to the other.
I am pretty sure that if any of us had a choice we would choose not be swinging on a jack handle for a couple of hours, But if the only choice walk home or use the Hi-Lift then I know which one people will choose.
Guns Kill far more people than Hi-Lift Jacks do, WAIT UP, Just think about that for a Second, Because it is 100% WRONG, because there is not a Gun in History that intentionally Killed anyone and again if it has killed Anyone then it only happened because it had a Human Operator in charge of it as with all machinery.