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Winterthur Gas & Diesel Ltd.
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4. Fuel Leakage System
4.1 Leakage Inspection Points
You use the leakage inspection points to help you find possible leakages from the HP
fuel pipes.
The level switches (LS) (18, Fig. 1), (19) and (20) monitor all important leakages in
the fuel system.
If there is too much leakage, the related alarm is activated.
Level switch Monitored components
LS3426A HP fuel pipes (8), fuel pumps (3), and fuel pump covers
LS3446A HP fuel pipes (15), injection control units (ICU) (14), related
fuel overpressure safety valve (23) and drain valve (21)
LS3444A Leakages (fuel and servo oil) from the rail unit
4.2 Leakages
WARNING
Injury Hazard: Always put on gloves and safety goggles when you
do work on hot components. When you open the screw plugs,
fuel can come out as a spray and cause injury.
If the level switch (18, Fig. 1) (LS3426A) or (19) (LS3446A) has activated an alarm,
do the procedure that follows:
1) Loosen the related drain screw (8, Fig. 4).
2) Loosen the plug (2, Fig. 6).
This will help you find the leakage. You can then do the related procedure.
2015-05
Fuel System 6-cylinders to 8-cylinders
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