Engine Disassembly (00-01) STC Oil Control Valve - Removal N14 Page 0-25 Remove the clamp, check valve, and oil supply hose from the engine. STC Oil Control Valve - Removal Remove the two capscrews attaching the STC oil control valve to the mounting plate. Remove the valve. Remove the two capscrews attaching the mounting plate to the cylinder block and remove the mounting plate. CELECT™Actuator Harness - Removal Remove the actuator harness clamps from the support bracket. Although the OEM harness is shown, this will be discon- nected when the engine is out of chassis. Disconnect the fuel shutoff valve control wire from the fuel shutoff solenoid valve.