There are also the rubber lift pads for lifts at shops under each
corner, inside, but near the jack points. You have to use these when
doing suspension work. I just did the 240D (123) this winter. I
used cement blocks and wood blocks under the pads to support the body
while the rear subframe was out. They seem more secure to me than
heavy duty jack stands from FLAPS. Now if you have the truck type
jack stands that cover at least a square foot at the base, I am
comfortable with those. On one of the subframe bolts I had a 6 foot
pipe on a 3/4 socket and it was a whale of a pull at that probably
at least 150 lb and that would be about 900 ft-lb. That is a lot of
sideways force on a jackstand with an 8x8 footprint 12-15 in the
air. I have not done the physics problem to figure out the tipping
point for those little stands. I never liked Physics that much. I
am more confident with the 16 footprint of a 40 lb. cement
block. (of course you do have to use the block on the strong side, holes up)
In short, where you support the car, depends on the job. I concur
with Jim for general work, use the control arms.
Loren
lotsa Benzes
At 08:42 AM 4/16/2007, you wrote:
But where are the hard points on my vehicle?
I always put them under the control arms. The rear set
usually under the shock mounts and the fronts about the
same, if I can manage it.
-- Jim
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