In cold climate the intake air need too be preheated. This is either done for GE engines by the preheater which is located in the inlet manifoldor or for VE engines by the glowplugs that are mounted in the cylinderhead. The preheat function is activated/deactivated by the engine control unit via the preheat relay.
This Operator's Manual covers the industrial engines: 4 cylinders TD520GE, TAD530GE, TAD531GE and TAD532GE. 6 cylinders TAD620VE, TAD730GE, TAD731GE, TAD732GE, TAD720VE and TAD721VE.
Fault code information • MID (“Message Identification Description”): The MID consists of a number which designates the control unit that sent the fault code message. (e.g. the engine control unit). • PID (“Parameter Identification Description”): The PID consists of a number that designates a parameter (value) to which the fault code relates
A magnetically controlled proportional valve (MPROP) controls the high pressure pump to ensure that the correct fuel pressure (rail pressure) is retained despite varying engine speed and loading.
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