The axle bending gets done between the spring and the spindle- - - - -NEVER in the middle! I use a piece of 8 or 10 inch I-beam at least as wide as the axle, and a foot or so beyond each tire is better. Chain the spring mount area to the I beam with several wraps of proof coil chain, then fabricate a support a foot or so inboard of the spring mount between the I beam and the axle. A piece of 3 inch square tubing works well for that. Put the bottle jack under the kingpin area, and jack it up until you can see the angle change a little. Go slightly beyond the amount you want the camber to change, as it will rebound somewhat. To increase the positive camber reverse the process- - - -chain the spindle area down, and jack up at the spring support area.

Better idea- - - - -get a pro to do the bending- - - - -when a 20-ton jack comes loose during the bending operation, it flies across the shop and takes concrete blocks out of the wall! Don't get in its way!
Jerry


"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!