1. Remove the plug from the oil reservoir. See Fig. 76. Using the Oil Suction Gun (303-D104, D94T-9000-A), drain the high-pressure oil pump reservoir.
2. Disconnect the electrical connector from the exhaust backpressure sensor. Remove the fuel filter retaining bolts and disconnect the fuel filter assembly from the engine front cover. See Fig. 84. Disconnect the electrical connector from the oil temperature sensor. See Fig. 85.
3. Disconnect the electrical connector from the oil pressure switch. See Fig. 86. Remove the bolts, oil reservoir and seal from the engine front cover. See Fig. 87.
4. To install, reverse removal procedure. Position the seal on the engine front cover. See Fig. 88. Tighten fasteners to specification. See TORQUE SPECIFICATIONS.
