Posted on October 11, 2023 by Jack BOBCAT S130 – HYDRAULIC CONTROL VALVE (ACS) OR (SJC) – Lift Arm Bypass Orifice Removal And Installation Remove the fitting (Item 1) [Figure 20-41-98] from the valve. Check the lift arm bypass orifice (Item 1) [Figure 20-41-99]. NOTE: This orifice is not removable from the valve casting.