Fiat 1996 Brava Service Manual page 391

Engine
Fuel system
Bravo-Brava ^
TD100
10.
1. Washer
2. Valve body
3. Washer
4. Supply valve
5. Spring
6. Spring guide
7. High pressure outlet connector
High pressure supply valves
The supply valves are enclosed between the
high pressure outlet connectors (7) and the
head stator.
The seal between the valve casing, the head
and the connector is achieved by means of
two steel washers (1 and 3).
The assembly consists of a valve body (2)
and a valve (4) matched together.
The maximum movement of the supply valve
is restricted by the spring guide (6).
The spring (5) thrusts the valve (4) against
the valve body (2), keeping it in its seat.
At the end of the injection cycle, the supply
valves "recall" a certain amount of fuel from
the high pressure pipes to ensure the rapid
closing of the nozzles and, combined with
the cam seal profile, the maintenance of the
residual pressure in these high pressure
pipes.
Cut out solenoid
The engine can be made to cut out
by completely removing the sup­
ply.
This is achieved by means of a
solenoid valve (3) bolted onto the
hydraulic head which operates be­
tween the flow of transfer pressure
(1) and the flow of the metering
valve (4).
The cut out solenoid, also known
as the Electrostop, is directly con­
nected to the Fiat CODE system
and for this reason it is suitably
protected by an anti-tamper cover.
1. Passage for transfer pressure
2. Piston
3. Solenoid assembly
4. Passage of fuel towards the
metering valve
12
I X
"
9 6
- Cancels and replaces
Prmt no 506
.670/08