NOTICE! If any of the measurements shows an abnormal value, check the wiring to and from the engine control unit and the preheat relay. Checking the wiring: 1 Cut the current with the main switch. 2 Remove connector B from the EMS2. 3 Connect the B connector to break-out cable 9990014 with break-out box 9998699. 4 Use multimeter 88890074 to do resistance measurement.
A switch is located in the water trap under the fuel filter. Its task is to detect whether there is water in the fuel. The switch senses the resistance between two pins, wich are in contact with the fuel. When there is no water in the fuel, the resistance is very high. If there is any water in the fuel
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.
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