Fuel system
It is particularly important to keep the fuel system well maintained - If even only slight traces of
contamination or water are allowed to get past the filtration system and into the injection pump, the engine
performance will be seriously affected and serious damage will be caused to the pump leading to very
costly repairs.
Fuel tank
The fuel tank holds approx. 15 gals (65 litres). Use clean diesel fuel only. Always fill the tank at the end of
the days work to avoid condensation. Drain the diesel tank periodically.
Water/sediment trap
A water trap/sediment bowl is fitted in the suction line between the tank and fuel filter. The glass bowl
should be checked weekly for any signs of water or sediments. The glass bowl should be removed,
emptied and cleaned before it gets half full of water. When the bowl is removed you will also find a gauze
mesh filter under the head unit which should also be removed and thoroughly cleaned. When replacing
the bowl take care not to overtighten the thumbscrew.
Draining fuel filter
The fuel filter unit should also be drained regularly. To do so slacken the knurled knob or hexagon
headed screw underneath the filter assembly to allow any accumulated water to drain from the filter.
Replacing fuel filter element
1. Drain fuel from fuel filter.
2. Support the bowl at base of filter while unscrewing the
centre retaining bolt (1).
3. Detach bowl and filter element from the filter head and
discard the element and both sealing rings.
4. Wash out the bowl with clean fuel oil.
5. Assemble new filter element between head and bowl,
using new sealing rings at top and bottom.
6. Tighten centre retaining bolt.
7. Tighten drain plug in bowl.
Bleeding the fuel system
The injection
pump on the XLD 418T diesel engine is self
priming, however, should you change the filter or run out of
fuel, the system will need bleeding as far as the fuel filter. A
hand pump and bleed screw is fitted to the top of the fuel filter
housing for this purpose (see below).
1. Connect a flexible tube between the bleed nipple on the filter outlet pipe connection, and a suitable
container.
2. Slacken the bleed nipple and depress the filter hand primer repeatedly until air-free fuel flows from the
tube.
3. Tighten the bleed nipple and remove the tube.
Maintenance
Fuel filter assembly.
1. Retaining bolt.
2. Filter element.
3. Bowl.
A. Bleed nipple.
B. Hand primer.
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