6-6 Installation TP-5592 7/96
Locatethefuelreturnlineasfaraspracticalfromthefuel
pickup to allow tank fuel to cool return fuel before
delivery back to the fuel injectors. Incoming fuel cools
the injectors and achieves maximum engine efficiency
by supplying cool fuel to the engine. Fuel tank capacity
and amount of fuel will affect cooling capability.
1-788
1
2
1. Precipitation tank
2. Drain petcock
Figure 6-5. Precipitation Tank (typical)
Under no circumstances should the propulsion engine
and generator set share mutual pickup or return lines
(tee arrangement) which would allow the larger engine
tostarve fuel fromthe smaller engine. It is alsopossible
that the operation of either engine could completely
drain the fuel line of the other engine and make starting
difficult.
Anti-Siphon Provisions
USCG Regulations do not require anti-siphoning
devices with diesel-powered applications. Therefore,
Kohler Co. does not recommend using anti-siphoning
devices.
Fuel Lines And Filters
Usemetalliclinesfromthetanktoaflexiblehosesection
to connect a metallic line to the engine fuel pump inlet
connection point. Use metallic lines from the tank to a
flexible hose section connecting metallic line to the fuel
return line connection point. The flexible hose section
allows vibrational motion of the generator set during
operation. Use 3/8 in. ID size customer-supplied fuel
lines to connect to the fuel pump and fuel return. Fuel
lines and fuel line supports must comply with USCG
Regulations 33CFR183.
See Figure 6-6 for fuel feed pump inlet connection and
fuel return line connection.
Anyin-linefuelfiltersorstrainersmustconformtoUSCG
Regulations.
Fuel Pump Lift Capabilities And
Fuel Consumption
Locate the fuel pump lift capabilities, fuel line size/type,
and generator set fuel consumption rates in Section
1—Specifications.
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