JLG G6-42A Service Manual - Manual (Page 122)

Engine
7-10 G6-42A, G9-43A, G10-43A
1. Inspect the fuel tank thoroughly for any cracks,
slices, leaks or other damage.
2. With the fuel tank removed from the machine, plug
all openings except one elbow fitting. Install the
elbow fitting, and apply approximately 1-1.5 psi
(7-10 kPa) of air pressure through the elbow. Check
the reservoir for leaks by applying a soap solution to
the exterior and look for bubbles to appear at the
cracked or damaged area.
f. Fuel Tank Installation
1. Set fuel tank in its original orientation at the rear of
the cab.
2. Install the fuel tank hold down bar.
3. Install the fuel sender with new gasket into the fuel
tank and secure with screws. DO NOT overtighten.
4. Connect the previously labeled fuel hoses to their
appropriate locations. Secure with clamps.
5. Connect the fuel gauge harness.
6. Fill the fuel tank according to specifications.Refer to
Section 2.5, “Fluid and Lubricant Capacities.”
7. Check fuel tank for leaks.
8. Properly connect the battery.
9. Close and secure the engine cover.
10. Remove the Do Not Operate Tags from both the
ignition key switch and the steering wheel.
7.4.3 After Fuel System Service
1. Drain and flush the fuel tank if it was contaminated.
2. Vent air from the fuel system in accordance with the
instructions found in the appropriate Operation &
Safety Manual.
3. Fill the fuel tank with fresh, clean diesel fuel as required.