3360140 - 1060E DIESEL PRESSURE PUMP AND CONTROL

DESCRIPTION OF COMPONENTS

Pressure pump

Specifications

TypeThe pump is radialjet type with three radial pistons (total cylinder capacity 0.567 cm³) and is driven by a toothed belt without the need to adjust timing.Structure

Each pumping unit consists of:

  • a piston (5) operated by a cam (2) in one piece with the pump shaft (6);
  • a plate-type intake valve (3);
  • a ball delivery valve (4).
Because the pressure pump must be fed at a pressure of at least 0.5 bars, the fuel system is equipped with an auxiliary fuel pump submerged in the tank.The maximum delivery pressure reaches 1400 bar.The pressure pump is lubricated and cooled by the fuel via special channels.
1 - Cylinder2 - Cam3 - Plate-type intake valve4 - Ball delivery valve5 - Piston6 - Pump shaft7 - Inlet - low pressure (from the fuel filter)8 - Supply - high pressure (to single fuel manifold)9 - Supply - low pressure (to fuel return manifold)

Pressure regulator

Specifications

StructureThis is fitted on the pressure pump and controlled by the injection control unit. It adjusts fuel feed pressure to the injectors.

The pressure regulator consists mainly of the following components:

  • a spherical shutter (1);
  • a valve (3) controlling pin (2);
  • a preloading spring (4);
  • a coil (5).
1 - Spherical shutter2 - Pin3 - Valve4 - Preload spring5 - Coil6 - Casing7 - Keeper