RADIATOR ASSEM. 7N3445 - Caterpillar

Electronic Control Circuit Diagram
Illustration 1 g03746141
Electronic control circuit diagram for the greater than 56 kW (75 hp) C3.4B engine
Illustration 2 g03746149
Electronic control circuit diagram for the less than 56 kW (75 hp) C3.4B engine equipped with a wall flow DPF
Illustration 3 g03746150
Electronic control circuit diagram for the less than 56 kW (75 hp) C3.4B engine equipped with a through-flow DPF
C3.4B Engine
Illustration 4 g02737916
Sensors and electrical connector locations on the left side of the C3.4B engine (typical example)
(1) 10-pin engine interface connector (optional)
(2) 62-pin engine interface connector (optional)
(3) Fuel rail pressure sensor
(4) Fuel temperature sensor
(5) High-pressure fuel pump inlet metering valve
(6) Oil pressure switch
(7) Primary speed/timing sensor (crankshaft)
(8) Water In Fuel (WIF) sensor
Illustration 5 g02737996
Close up views of the sensor locations on the left side of the C3.4B engine (typical example)
(1) 10-pin engine interface connector (optional)
(2) 62-pin engine interface connector (optional)
(3) Fuel rail pressure sensor
(4) Fuel temperature sensor
(5) High-pressure fuel pump inlet metering valve
(6) Oil pressure switch
(7) Primary speed/timing sensor (crankshaft)
(8) Water In Fuel (WIF) sensor
Illustration 6 g02737956
Sensors and electrical connector locations on the right side of the greater than 56 kW (75 hp) C3.4B engine (typical example)
(9) Intake manifold air pressure and temperature sensor
(10) Exhaust temperature sensor connector
(11) Exhaust gas pressure sensor
(12) NOx Reduction System (NRS) valve
(13) Wastegate regulator
(14) Oxygen sensor
Illustration 7 g03356014
Sensors and electrical connector locations on the right side of the less than 56 kW (75 hp) C3.4B engine (typical example)
(15) Intake manifold temperature sensor
(16) Intake manifold pressure sensor
(17) Exhaust gas pressure sensor
(18) NOx Reduction System (NRS) valve
(19) Wastegate regulator
(20) Oxygen sensor
Illustration 8 g03356021
Sensors and electrical connection locations on the front of the C3.4B engine (typical example)
(21) Intake throttle valve
(22) Coolant temperature sensor
(23) Secondary (camshaft) speed/timing sensor Clean Emissions Module (CEM)
Illustration 9 g03356022
Typical view of the sensor locations on the CEM on C3.4B engines equipped with a wall-flow DPF (typical example)
(24) Diesel Oxidation Catalyst (DOC) inlet temperature sensor
(25) Diesel Particulate Filter (DPF) inlet temperature sensor
(26) Inlet connection for the DPF differential pressure sensor
(27) Outlet connection for the DPF differential pressure sensor
Illustration 10 g03356028
Typical view of the sensor locations on the CEM on C3.4B engines equipped with a through-flow DPF (typical example)
(28) Diesel Oxidation Catalyst (DOC) inlet temperature sensor
(29) Diesel Particulate Filter (DPF) inlet temperature sensor