JLG 4017RS Service Manual - Manual (Page 121)

7-7 3614RS, 4017RS
Engine
7.5 ENGINE ELECTRICAL SYSTEM
The engine electrical system, including the starter, alternator
and primary wiring, is described in Section 9.5, “Electrical
System Schematics.”
7.6 FUEL SYSTEM
7.6.1 Diesel Fuel
Fuel represents a major portion of machine operating costs
and therefore must be used efficiently. ALWAYS use a
premium brand of high quality, clean diesel fuel. Low cost,
inferior fuel can lead to poor performance and expensive
engine repair.
Note: Due to precise tolerances of diesel injection systems,
keep fuel clean, and free of dirt and water. Dirt and water in fuel
system can cause severe damage to both injection pump and
injection nozzles. Use #2 diesel fuel with a minimum Cetane
rating of 40. #2 diesel fuel gives best economy and performance
under most operating conditions. Fuels with Cetane numbers
higher than 40 may be needed in high altitudes or extremely
low ambient temperatures to help prevent misfiring and
excessive smoking.
Inform owner/operator of machine to use #2 diesel fuel,
unless ambient temperatures are below 0° C (32° F). When
temperatures are below 0° C (32° F), a blend of #1 diesel and
#2 diesel fuels (known as “winterized” #2 diesel) may be
used.
Note: #1 diesel fuel may be used, however, fuel economy will
be reduced.
If equipped for ULS, use a ultra low sulfur content fuel with
a cloud point (temperature at which wax crystals form in
diesel fuel) at least 10° below lowest expected fuel
temperature. Viscosity of fuel must be kept above 1.3
centistrokes to provide adequate fuel system lubrication.
If equipped for LS, use a low sulfur content fuel with a cloud
point (temperature at which wax crystals form in diesel fuel)
at least 10° below lowest expected fuel temperature.
Viscosity of fuel must be kept above 1.3 centistrokes to
provide adequate fuel system lubrication.
7.6.2 Fuel Tank
Note: Fuel tank is a one piece unit. It is located under the cab. If it is
determined that fuel tank must be removed, fuel must be drained
before tank removal. Always dispose of fuel properly.
a. Fuel Tank Removal
1. Park machine on a firm, level surface, level machine, fully
retract boom, lower boom, place transmission in (N)
NEUTRAL, engage parking brake, and shut engine OFF.
2. Place a Do Not Operate Tag on both ignition key switch
and steering wheel.
3. Open engine cover. Allow system fluids to cool.
4. Properly disconnect battery.
Note: If replacing the tank, remove all internal and external
components from the old tank, and retain for use on the
replacement tank.
Note: Have a dry chemical (Class B) fire extinguisher near the
work area.
5. Remove hardware (1) securing fuel tank to frame.
6. Support fuel tank with a floor jack or suitable supports.
Remove hardware (2) securing fuel tank
support to cab.
7. Lower fuel tank and support bracket away from cab
being careful to minimize fluid spillage.
8. Label, disconnect and cap fuel lines.
9. Disconnect fuel sender.
10. Remove fuel tank drain plug, and drain fuel into
an approved and suitable container. Dispose of
fuel properly.
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