Tech Tip: Adjusting the New Style Combination Hydraulic Unloader Pilot Valve

Setting Pressures

Setting Unload Pressure

1. Flip toggle to the “RUN” position.
2. Loosen jam nut counter-clockwise with 5/8″ end wrench.
3. With jam nut loose, turn unload adjustment nut (9/16″) clockwise to increase pressure. Turn counter-clockwise to decrease pressure.
4. Stabilize with back-up wrench.
5. Tighten jam nut.

Setting Differential Pressure

1. Use 7/8″ wrench to loosen jam nut.
2. Use 3/4″ wrench to make adjustment.
3. Turn clockwise to increase the differential pressure and counter-clockwise to decrease the differential pressure.
4. Tighten jam nut.