Iveco VECTOR Series Technical And Repair Manual page 51

VECTOR 8 ENGINES
Figure 20
1. Body - 2. Piston - 3. Fuel inlet - 4. Spring - 5. Part bolted onto the common rail
The flow of fuel from the common rail to the injectors takes place via the ports in the small diameter of the piston.
A
In normal conditions, the pressure of the fuel is exerted on both sides of the piston, maintained by the spring in
the opening position
If there is a substantial loss in pressure downstream of the limiter, the inlet pressure becomes predominant and
B
moves the piston to the opposite side, obstructing the outlet of the fuel.
C Limiter with piston in outlet closed position.
Print P2D32V001E
23
SECTION 2 - FUEL
89672
Base - April 2006