TM 9-2320-209-20-3-2 c. Replacement. FRAME 1 1. Put spring seat (1) in place on axle housing (2). 2. Raise jack (3) under axle housing (2) until spring (4) just touches spring seat (1). 3. Put plate (5) on U-bolts (6) with hole for shock absorber toward back of truck. Put four lockwashers on two U-bolts and using 1 1/16-inch wrench, screw on and tighten four nuts (7). 4. Using torque wrench with 1 1/6-inch socket, tighten nuts (7) to 170 to 180 pound-feet. GO TO FRAME 2 17-27