A more involved explanation then.
I want to replace the current Alco units as they are not sealed (requiring regular stripping and cleaning as a result) and are on the way out. Looking at the BOS because they are a sealed unit.
One of the BOS selling points is they can be used to jack up the CT to change a tyre. This is attractive as I would simply have to open the rear passenger door to grab the wheel brace, drill and impact driver rather than also having to open the rear wheel carriers, both rear doors and move gear in the back to access the jack from its little hidey hole in the back of the GU. Given the cost of the BOS units it would be nice to be able to use all their features not just one.
So the 600 wont work as its too big
Correct
but you need 700 to get it off the ground
Correct
which is less than 700
With the suspension compressed by the weight of the CT. Remove the weight of the CT and the suspension extends.
Lifting under the axle, just behind the wheel.
Has always been the quickest, most efficient lift, with shortest distance to lift.
Which is what I do now.
Why have the suspension expanded to full before you get the tyre off the ground?
I am not wanting the suspension fully expanded it's just what happens when you do it this way.
Its a bit of round welded on, easy to spot
Which the head of the jack may or may not fit into.
and SAFEST way to remove a wheel
I feel using the stabiliser legs would be safer than using the jack - support at three points rather than two.
But as I said use of the stabiliser legs to jack is not the prime reason I'm thinking about replacing the current Alco's with the BOS, it's just something else I can use them for.
BOS have suggested I use Suspension Limiting Straps to solve the problem - something else to think about.
Hopefully that makes things a bit clearer.