22. Before disassembly, the adjustment screw lock nut is loosened and the adjustment screw turned fully inward to measure and record the number of turns it takes to bottom the screw. This screw adjusts how far the valve will open when the bypass is in use. Next, the blue (compression) or red (rebound) cap is loosened, and the plunger and adjustment screw are removed as a unit. Behind the plunger are a small spring and a bypass piston. The spring and piston serve as a one-way valve so each bypass is only active in one direction. The piston can be removed with a small magnet, or by tipping the shock upside down.