Removal of Rear Axle Housing Supports.
Put jack (1) in place under forward-rear axle housing (2). Turn knob (3)
all the way to right and move handle (4) up and down to raise truck until
two trestles (5) are free. Take trestles out from under truck.
Turn knob (3) slowly to left and lower axle housing (2) to ground. Take
jack (1) out from under truck.
Do steps 1 and 2 again on rear-rear axle housing.