10.2.4
Malfunction of the fuel system (XX34NN)
Tab 10-25 Fuel supply temperature is not in the permitted range
Indication
Possible cause
Procedure
TE3411A
The fuel supply system is defective
•
Find the cause and repair the fault.
Tab 10-26 Fuel supply pressure at the engine inlet is too low
Indication
Possible cause
Procedure
PT3421A
The fuel supply system is defective
•
Find the cause and repair the fault.
The fuel does not have the speci-
fied properties
•
Use correct fuel.
Tab 10-27 Fuel leakage flow from the fuel supply unit is too high
Indication
Possible cause
Procedure
LS3426-27A
An HP fuel pipe or a fuel pump is
defective
•
Find the cause and repair the defective item,
refer to section
.
Tab 10-28 Temperature difference of the fuel outlet of the two fuel pumps is too high (for X35/-B or
X40/-B engine)
Indication
Possible cause
Procedure
TE3431-nnA
Flow control valve of a fuel pump is
defective
•
Clean or replace the defective flow control
valve.
One of the two fuel pumps is de-
fective
•
Replace the defective fuel pump.
•
As a temporary procedure, close the 3/2-
way valve 10-8752_E0_3-4 in the HP fuel
pipe of the defective fuel pump.
Tab 10-29 Leakage flow from the rail unit is too high
Indication
Possible cause
Procedure
LS3444-nnA
An item of the rail unit is defective
•
Find the cause and repair the defective item,
refer to section
10.5 Examine the rail unit for
.
Tab 10-30 Fuel leakage flow from fuel rail items is too high (engine with FLV)
Indication
Possible cause
Procedure
LS3446A
A flow limiting valve (FLV), a injec-
tor or a pipe is defective
•
Find the cause and repair the defective item,
refer to section
.
NOTE:
The leakage flow from the FLV is related to the viscosity of the used fuel.
X72-B
AA00-0000-00AAA-410C-A
Operation Manual
Malfunctions of systems and components
Winterthur Gas & Diesel Ltd.
- 397 -
Issue 003 2021-12
