JLG 4017 Service Manual - Manual (Page 93)

7.7 4017
Engine: Perkins 1004-40T
75 hours. The use of fuel with a sulfur content above
1.3 percent is not recommended.
7.6.2 Fuel Tank
Note: The fuel tank is a one piece unit. It is located at the
rear of the machine, between the frame. If it is determined
that the fuel tank must be removed, the fuel must be
drained before tank removal. Always dispose of fuel
properly.
a. Fuel Tank Removal
1. Park the machine on a firm, level surface, fully
retract the boom, lower the boom, place the
transmission control lever in NEUTRAL (N), engage
the park brake and shut off the engine.
2. Install the safety support on the lift/lower cylinder
rod.
Note: The support is located at the left front corner of
the frame.
3. Place an Accident Prevention Tag on both the
ignition key switch and the steering wheel, stating
that the machine should not be operated.
4. Remove the negative (-) battery cable from the
battery negative (-) terminal.
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 fuel tank drain plug (1), and drain fuel into
an approved and suitable container. Dispose of fuel
properly.
6. Loosen and remove the strap (2) over the fuel tank
and disconnect the fuel supply hose (3) and return
line hose (4) from tank.
7. Disconnect fuel level sender electrical connectors
from the fuel level sender (5).
8. Remove screws securing fuel sender to the tank.
Remove fuel sender from tank.
9. Lift the empty fuel tank from between the frame rails.
b. Disassembly
The fuel tank is a one-piece unit and cannot be
disassembled. The fuel level indicator can be removed and
reused on the new replacement tank.
c. Cleaning and Drying
If contaminated fuel or foreign material is in the tank, the
tank can usually be cleaned.
To clean the fuel tank:
1. Have a dry chemical (Class B) fire extinguisher near
the work area.
2. Remove the fuel or oil tank drain plug, and safely
drain any fuel into a suitable container. Dispose of
fuel properly.
3. Clean the fuel tank with a high-pressure washer, or
flush the tank with hot water for five minutes and
drain the water. Dispose of contaminated water
properly.
4. Add a diesel fuel emulsifying agent to the tank. Refer
to the manufacturer’s instructions for the correct
emulsifying agent-to-water mixture ratio. Refill the
tank with water, and agitate the mixture for 10
minutes. Drain the tank completely. Dispose of
contaminated water properly.
5. Refill the fuel tank with water until it overflows.
Completely flush the tank with water. Empty the fuel
tank, and allow it to dry completely.
d. Assembly
The fuel level indicator can be removed and reused on the
new replacement tank. Dispose of the old tank according
to local regulations concerning hazardous materials
disposal regulations.
Note: If a leak is suspected in the fuel tank, contact a
JLG Distributor.
MZ0100
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