SkyTrak 6036 Service Manual - Manual (Page 196)

Engine: Cummins 4BT3.9
7.18 Model 6036 Legacy
13. Disconnect the lower hydraulic oil strainer hose from
the strainer connection (Fig. 7-19, 15) and cap hose.
14. Disconnect the return hose from the lower fitting
(Fig. 7-19, 16).
15. Position and connect a suitable chain support to the tank
lifting point (Fig. 7-19, 17), and take up slack in chain.
16. While supporting the tank, remove the four 5/8-11
hex nuts (Fig. 7-19, 18) and lockwashers (19)
securing the tank to the vehicle frame. Pull tank
away from the tank carriage bolts (20) and remove
tank. Retain hardware for reuse.
b. Disassembly
The fuel/hydraulic oil reservoir is a one-piece unit and
cannot be disassembled. The fuel level indicator and
hydraulic filters can be removed and reused on the new
replacement reservoir. Dispose of the old reservoir
according to local regulations concerning hazardous
materials disposal.
c. Cleaning and Drying
If contaminated fuel, hydraulic oil or foreign material is in
the tank, the tank can usually be cleaned.
Note: If a leak is suspected between the fuel and hydraulic
oil tank, contact JLG Service Department at:
Domestic: 1-
877-554-5438
International: 1- 717-485-5161
To clean the fuel/hydraulic oil tank:
1. Have a dry chemical (Class B) fire extinguisher near
the work area.
2. Depending on which side of the tank is contaminated
(fuel or hydraulic oil), remove the fuel or oil tank
drain, plug and safely drain any fuel or hydraulic oil
into a suitable container. Dispose of fuel or hydraulic
oil properly.
3. Clean the fuel/hydraulic oil 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. For the fuel tank side, 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. Inspection
Note: If a leak is suspected between the fuel and hydraulic
oil tank, contact JLG Service Department at:
Domestic: 1-
877-554-5438
International: 1- 717-485-5161
1. Inspect the fuel/hydraulic oil tank thoroughly for any
cracks, slices, leaks or other damage.
2. With the fuel/hydraulic oil tank removed from the
vehicle, 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 tank for leaks by applying a soap
solution to the exterior, and look for bubbles to
appear at the cracked or damaged area.
e. Assembly
The fuel/hydraulic oil reservoir is a one-piece unit and
cannot be disassembled. The fuel level indicator and
hydraulic filters can be removed and reused on the new
replacement tank. Dispose of the old tank according to
local regulations concerning hazardous materials
disposal regulations.
f. Fuel/Hydraulic Oil Tank Installation
1. Attach the fuel/hydraulic oil tank (Fig. 7-19, 7) to a
suitable lifting device at the lift point (17).
2. Place the four 5/8-11 carriage bolts (Fig. 7-19, 20)
into the slotted holes in frame.
3. Position the tank (Fig. 7-19, 7) and insert carriage
bolts through tank attachment holes. Install four 5/8"
lockwashers (19) and 5/8" hex nuts (18) onto the
carriage bolts. Finger tighten the hex nuts onto
carriage bolts. Slide tank and carriage bolts toward
the front of vehicle until carriage bolts are bottomed
out into the slotted frame holes.
4. Install the fuel sender with new gasket (Fig. 7-19, 6)
into the fuel tank.
5. Attach fuel sender harness connectors (Fig. 7-19, 1)
to the sender unit, and secure with #10 x 5/8" screws
(5). DO NOT overtighten.
DANGER:
NEVER weld in, on, near or
around the fuel/hydraulic oil reservoir. Fuel and
hydraulic fluid and fumes can cause the
reservoir to explode. This can result in death or
serious personal injury.
WARNING:
NEVER drain or store fuel in
an open container due to the possibility of
explosion or fire. Discard the fuel in an
approved manner.