I'm rebuilding the rear axle in my Dodge pickup. While contemplating pressing the new bearings on the pinion and carrier I thought about using heat to make it easier. I can put the pinion and carrier in the freezer overnight and heat the bearings in the oven. From what I've found on line 200 deg F is a safe temp for tapered roller bearings. Has anyone done this before? Can anyone think of a reason not to? I wonder if the temperature shock during installation would be bad for the bearings or pinion and carrier.