Mudd-Ox GT 45 HP, Owner'S Manual

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Hydraulic Oil Change Cont.
9. Although the Mudd-Ox has new AW-46 oil in the tank and new oil filters, there is still old oil inside the hydraulic system past the tank. It’s time
to run new oil through the system to push the old oil out via the return line. Locate the hydraulic oil return line. This is on top of the oil tank as
shown in Figure-2, D.
10. With the return line removed, find a large bucket. Use oversized extension hoses to slide over the return line. This will extend the overall
length of the return line, so the old oil can drain into the external bucket for proper disposal. Note: Do not allow oil to spill inside the Mudd-
Ox.
11. Once again, remove the hydraulic tank oil cap and reinstall oil funnel (Figure-1, C). Reinstall lower operator seat.
12. With all the filters replaced and oil refilled, it’s best to prime the hydraulic system without the engine running. See page 31 for a diagram and
information to shut off engine fuel. Refer to the Kubota engine manual for detailed information.
13. The engine will no longer run. One mechanic will hold the starter to continuously crank over the engine. Another mechanic must watch the
hydraulic oil tanks to ensure the oil is being pulled into the system. If the oil level lowers, it’s safe to reverse step #12. Check to see there are
no leaks. Note: If there is fuel in the engine, it may run for a short period of time. Ensure the oil level lowers. If it does not, shut engine off
immediately. Wait a minute, then try again. It may take a few attempts before oil begins to pull into the system.
14. This step is extremelly important to do execute perfectly. It’s time to run the Mudd-Ox to flow new oil into the system and push out the
old. (1) mechanic should sit inside the rear occupant area, prepared with new oil. A 2nd mechanic will start the Mudd-Ox and slowly push the
control levers partially forward. Just enough to slowly spin the motors, thus the wheels outside the Mudd-Ox will turn. Only operate engine
at idle RPM. While the machine is operating, the mechanic inside the rear occupant area must monitor the hydraulic tank. As the oil begins
to drain into the hydraulic system, they must continue to fill the tank and maintain a visible oil level in the sight glass. Note: Moving parts are
dangerous. Always take great precaution when near/inside the operating Mudd-Ox. Ensure the external bucket and oil return line cannot be
caught on any moving parts. Do not let the oil system run dry. This is fatal for the hydraulics.
15. During this time, a 3rd mechanic will continue to monitor the external bucket where the return line is draining into. The older oil will most
likely appear darker in color. Once the oil coming out of the return line is no longer old, but appears to be new oil, the mechanic operating
the Mudd-Ox control levers may return to a neutral position and properly shut off the machine.
16. The mechanic monitoring the oil tank should verify the oil level is satisfactory, and fill if necessary. Reinstall oil cap and return line. Remove
external bucket and properly dispose old oil.