3. Inspection and Adjustement [Reference: Fuel injection valve structure] L F.O. return pipe joint I t- Nozzle holder lB-- Pressure adjusting shim Nozzle spring es= I!-- Nozzle spring seat D Valve stop spacer Dowel pin - Nozzle Nozzle case nut (Tightening torque: 39.2 to 44.1 Nm(4 to 4.5 kgtim)) 3-5