Hobart 120CU20, Operation And Maintenance Manual With Illustrated Parts List

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OM-2228 / Operation and Maintenance Manual
120CU20 / Series 500120 / 400 Hz. Generator Set
October 15, 2013 Chapter 2-2
Page 8
b) Fuel Water Separator.
The equipment manufacturer has mounted a fuel water separator on the inner wall of the canopy. Its
function is to remove foreign material and extract water from the fuel before it enters the fuel lift
pump. Daily draining of the filter water separator bowl is required.
(1) Draining the fuel water separator bowl.
a Open drain valve
b Drain accumulated water and contaminants.
c Close drain valve.
(2) Priming fuel water separator (when applicable).
a Loosen the vent plug.
b Pump until fuel purges at the vent plug.
c Close the vent plug, start the engine and check for leaks,
d Correct as necessary with the engine off.
(3) Changing the fuel filter.
a The filter element replacement part numbers:
•
Hobart : 286897-030
•
Cummins: FF5421
b Apply a coating of clean fuel or motor oil to the new O-ring and element seal. Spin the filter
onto the fuel filter element.
c
The fuel filter must be change after every 500 hours of operation.
c) Fuel Pump.
The fuel pump supplies pressure to the fuel system so the diesel fuel can circulate freely. A
consistent check of the fuel pressure is necessary. Loss in fuel pressure in the fuel line may indicate
a faulty fuel pump.
d) Engine Lubricity Additive Fuel Filter.
The forth item in the fuel line system is the factory installed lubricity additive fuel filter. The filter’s
function is to remove foreign material from the fuel and add a lubricity additive into the fuel before it
enters the engine’s fuel pump. The filament element is a throwaway type in which the case and
element are made as one disposable part.