BOLT 7S6701 - Caterpillar

Dosing Control Cabinet and DEF Buffer Tank Assembly
Illustration 1 g02856458
Diesel Exhaust Fluid (DEF) dosing cabinet
(1) Engine harness
(2) Remote DEF tank harness
(3) Power to cabinet
(4) DEF vent from tank
(5) Air to injector
(6) DEF tank
(7) DEF filter screen
(8) Drain valve
(9) DEF tank drain
(10) Air filter screen
(11) DEF to injector
(12) CEM harness Dosing Control Cabinet
Illustration 2 g03695879
Control Cabinet
(1) DEF tank heater relay
(2) Connector A-C9 (J1)
(3) Connector A-C1 (J2)
(4) SCR system ECM
(5) Cabinet air temperature sensor
(6) Local CAN resistor
(7) DEF pump heater
(8) Global CAN resistor
(9) Refer to illustration 3
(10) DEF pump
Illustration 3 g02843478
Detail view front of control cabinet
(1) DEF tank heater breaker
(2) Pump breaker
(3) Terminal block (AC power)
(4) Terminal block (AC power)
(5) Terminal block (ground)
(6) DEF pressure sensor
(7) Air assist pressure sensor
(8) DEF buffer tank return valve (solenoid)
(9) DEF buffer tank return valve (pneumatic)
(9) DEF buffer tank return valve (pneumatic)
(10) DEF manifold heater
(11) DEF buffer tank fill valve (pneumatic)
(12) DEF manifold
(13) DEF manifold temperature sensor
(14) Air pressure regulator
(15) DEF buffer tank fill valve (solenoid)
(16) Air assist valve (solenoid)
(17) Relay for DEF manifold heater
(18) Connector for CEM (A-C3)
(19) Connector for engine (A-C2)
(20) Connector for tank (A-C13)
(21) Relay for electrical supply side of heated DEF line
(22) Relay for electrical return side of heated DEF line DEF Buffer Tank
Illustration 4 g02719241
Buffer Tank
(1) DEF tank heater relay
(2) DEF buffer tank level sensor
(3) DEF tank heater
(4) DEF buffer tank temperature sensor Clean Emissions Module (CEM) for the C175 Engine
Illustration 5 g03275736
C175 CEM
(1) Aftertreatment #1 Intake NOx Sensor
(2) Aftertreatment #2 Outlet NOx Sensor
(3) Aftertreatment #1 Outlet NOx Sensor
(4) Exhaust gas differential pressure sensor for the CEM
(5) Network #2 (Local CAN) termination resistor
Illustration 6 g03275716
C175 CEM bottom side view
(6) Aftertreatment identification module
(7) Connector for temperature sensors
(8) Connector for CEM interconnect harness
(9) Aftertreatment #1 SCR Catalyst Outlet Gas Temperature Sensor
(10) Aftertreatment #1 SCR Catalyst Intake Gas Temperature Sensor Clean Emissions Module (CEM) for the 3500 Engine
Illustration 7 g03314076
3500 CEM
(1) Exhaust gas differential pressure sensor for the CEM
(2) Outlet #2 NOx sensor assembly
(3) Intake #1 NOx sensor assembly
(4) Outlet #1 NOx sensor assembly
Illustration 8 g03314096
Bottom side view
(5) SCR catalyst outlet gas temperature
(6) SCR catalyst intake gas temperature
(7) Connector for temperature sensors
(8) Local CAN resistor
(9) Connector for CEM interconnect harness
(10) Aftertreatment identification module