[Island Medic]

I have read some posts about how to release the ball joints etc to unload the springs. These all sound like they have the motor in to help weigh down the truck. I have already taken out the motor and trans. The box is off and all sheet metal except for the cab. Can I still use a jack under the control arm to slowly release the tension? Is there enough weight left to do this? What would be the safest way to do this?

thanks

Brad