Operation Manual – ITW GSE 6400 Tier 3
5) Engine Fuel System
The fuel system consists of five primary components: fuel tank, lubricity filter, primary fuel filter, fuel lift
pump, and the fuel return line. The following are maintenance procedures for each of these items.
a) Fuel
Tank
Be sure that no foreign objects are permitted in the fuel tank. The fuel tank must be removed and
flushed out if objects are found in the Fuel Water Separator or Lubricity Additive Filter.
b) Fuel Water Separator or Lubricity Additive Filter
A lubricity fuel filter, which is also a fuel/water separator, is mounted in the generator
compartment above the fuel tank outlet. The filter’s function is to add a lubricant to the fuel to
help prolong the engine seals and fuel pump life when fuels other than diesel are used (i.e., jet
fuel). The filter also removes foreign material and removes both free and emulsified water from
the fuel before it enters the fuel lift pump. Daily draining of the filter is required.
Replacement Filter Element:
FS9924
Drain the water daily.
Change the filter after every
500 hours of operation.
Figure 2-2-5: Lubricity Filter
1) To drain the water:
a) Open drain valve.
b) Drain
accumulated
water and contaminants.
c) Close drain valve.
The lubricity filter must be changed every 500 hours of operation for the fuel filter to continue
adding the proper amounts of the lubricity additive into the fuel system.
Water Drain
OM2254 Rev A
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