PLATE & FILM GP 3293568 - Caterpillar

Start the engine and operate the engine at high idle. When you are checking for the stall pressure for the implement cylinder, move the wheel lean cylinder to the end of the stroke. Then stall the wheel lean cylinder. The correct pressure reading should be 24132 1034 kPa (3500 150 psi).
Stop the engine if the pressure reading is incorrect. Loosen the locknut for signal relief valve (6) . The locknut is a 9/16 inch hex head. Turn the signal relief setscrew clockwise in order to increase maximum pump pressure. Turn the signal relief setscrew counterclockwise in order to decrease maximum pump pressure. Use a 3/16 inch hex key wrench in order to adjust the signal relief valve. One clockwise turn of the setscrew will increase the setting by approximately 4700 kPa (682 psi). One counterclockwise turn of the setscrew will decrease the setting by the same amount.