31258132 Volvo.Penta Valve spring

Illustration 1 g02889596
Typical example (1) Valve for the NOx Reduction System (NRS) (2) Air cleaner (3) Air inlet temperature sensor (4) Oxygen sensor (5) Diesel Oxidation Catalyst (DOC) inlet temperature sensor (6) Diesel Particulate Filter (DPF) inlet temperature sensor (7) Diesel Oxidation Catalyst (DOC) (8) Diesel Particulate Filter (DPF) (9) Exhaust Cooler for the NOx Reduction System (NRS) (10) Turbocharger (11) DPF differential pressure sensor (wall flow DPF only) (12) Engine intake throttle valve (13) Air-to-air aftercooler (14) Wastegate regulator (15) Engine exhaust gas pressure sensor (16) Engine exhaust gas temperature sensor (17) Crankshaft speed/timing sensor (18) Camshaft speed/timing sensor (19) Electronic unit injectors (20) Fuel injection pump (21) Fuel pressure sensor (22) Oil pressure switch (23) Coolant temperature sensor (24) ECM (25) Engine (26) Glow plugs (27) Glow plug Control Unit (GCU) (28) Primary fuel filter with water-in-fuel sensor (29) Inlet manifold air temperature/pressure sensor (30) Secondary fuel filter with fuel temperature sensor (31) Fuel tankNote: A separate intake manifold air pressure sensor and intake manifold temperature sensor are installed on the 55 kW (74 hp) engine.Note: The ECM is not mounted on the engine.The electronic control system has the following components:
ECM
Pressure sensor
Temperature sensors
Crankshaft speed/timing sensor
Camshaft speed/timing sensor
The suction control valve for the fuel injection pump
Wastegate solenoid
Electronic unit injectorsSensor Locations for the Engine
The illustrations in this section show the typical locations of the sensors for the industrial engine. Specific engines may appear different from the illustration due to differences in applications.
Illustration 2 g03343020
Sensors and electrical connector locations on the left side of the C3.4B engine (1) 10-pin engine interface connector (2) 62-pin engine interface connector (3) Fuel pressure sensor (4) Fuel temperature sensor (5) Inlet metering valve for the fuel injection pump (6) Oil pressure switch (7) Crankshaft speed/timing sensor (8) Water In Fuel (WIF) sensor
Illustration 3 g03343021
Close up views of the sensor locations on the left side of the C3.4B engine (1) 10-pin engine interface connector (2) 62-pin engine interface connector (3) Fuel pressure sensor (4) Fuel temperature sensor (5) Inlet metering valve for the fuel injection pump (6) Oil pressure switch (7) Crankshaft speed/timing sensor (8) Water In Fuel (WIF) sensor
Illustration 4 g02737956
Typical example of sensors and electrical connector locations on the right side of the C3.4B engine (9) Inlet manifold air pressure and temperature sensor (10) Connector for the temperature sensor (NOx Reduction System) (11) Pressure sensor (NOx Reduction System) (12) Exhaust gas valve for the NOx Reduction System (NRS) (13) Wastegate regulator (14) Oxygen sensor
Illustration 5 g02738156
Typical example of sensors and electrical connection locations on the front of the C3.4B engine. (15) Intake throttle valve for the NOx Reduction System (NRS) (16) Coolant temperature sensor (17) Camshaft position sensorSensor Locations for the Clean Emissions Module
Illustration 6 g02738216
Typical example of the sensor locations (18) Diesel Oxidation Catalyst (DOC) inlet temperature sensor (19) Diesel Particulate Filter (DPF) inlet temperature sensor (20) Inlet connection for the DPF differential pressure sensor (21) Outlet connection for the DPF differential pressure sensorECM
Illustration 7 g02722357
Typical exampleThe Electronic Control Module (ECM) (1) functions as a governor and a computer for the fuel system. The ECM receives signals from the sensors in order to control the timing and the engine speed.The electronic system consists of the ECM, the engine sensors, and inputs from the parent machine. The ECM is the computer. The personality module is the software for the computer. The personality module contains the operating maps. The operating maps define the following characteristics of the engine:
Engine rating
Torque curves
High and low idle speed (rpm)
Emissions
Injection timingPasswords restrict changes to authorized personnel. Refer to Troubleshooting for more information on the passwords.The ECM has an excellent record of reliability. Any problems in the system are most likely to be the connectors and the wiring harness. The ECM should be the last item in troubleshooting the engine.The programmable software contains all the fuel setting information. The information determines the engine performance.Flash programming is the method of programming or updating the programmable software. Refer to Troubleshooting, "Flash Programming" for the instructions on the flash programming of the programmable software.The ECM is sealed and the ECM needs no routine adjustment or maintenance.