User Manual

SENR9977 37
TestingandAdjustingSection
7. Start the engine and check for any leakage of fuel
or air from the f
uel lines.
Check the Funct
ion of the Pressure
Regulator
1. Remove the fuel line from the outlet for the supply
for the fuel injection pump (3).
2. Install a pipe with a tap for a pressure gauge.
Connecta0to80kPa(0to12psi)pressure
gauge.
3. Start the engine and run the engine at idle for two
minutes in or
der to remove any trapped air.
4. Record the pressure reading at idle and at rated
speed. The mi
nimum pressure reading should be
the following values:
Bosch VP30
Idle ................................... 27.5 kPa (3.98 psi)
Rated speed ....................... 24 kPa (3.48 psi)
Note: The max
imum pressure reading a t the inlet to
thefuelinjectionpumpis80kPa(12psi).
5. Reconnect t
he fuel line. Run the engine at idle for
two minutes in order to remove any trapped air.
Check for th
e following issues if the pressures are
outside of the above specifications.
•
All electri
cal connections are installed correctly.
•
There are no leaks in the fuel lines or connections.
•
The O-ring on fuel filter housing (2) does not leak.