Start with making a 10 MM indication from the bottom of the tube with a center punch, 2. Clamp the
Shock Absorber in a vise horizontally with the shock absorber rod fully opened, Drill a hole at the center punch using a 5 mm (3/16 in) drill bit. Remove the shock absorber from the vise. Hold the shock absorber over a drain pan horizontally with the holes down. Move the rod in/out of the tube to completely drain the oil from the shock absorber.