Mudd-Ox GT 45 HP, Owner'S Manual

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Hydraulic Oil Change
We recommend changing the hydraulic oil after the first 250 hours. Then, every 500-1,000 hours depending on usage and work load. It is
important to never rush the process, and to verify all steps have been completed with great care. Not following these specific directions can
lead to ruined hydraulic parts and expensive replacement. This should only be attempted by very experienced mechanics with a background in
hydraulic systems. At least (3) mechanics are recommended for these steps. Thoroughly read and understand the steps before attempting.
1. Remove lower operator seat and engine cover. Safely raise the Mudd-Ox with all tires off the ground. It must be high enough that the tires
can drive forward and backwards without dragging the ground.
2. Locate the (1) hydraulic oil tank on the GT/XL. It is on the passenger side of the Kubota engine (Figure-1, A). At the top of the oil tank is an oil
fill cap. Remove the cap (Figure-1, C).
3. It’s time to drain oil from the tank. We recommend using an oil suction pump with a long, flexible nozzle. It will drain the tank completely and
contain the oil for proper disposal.
4. After the tank is drained, locate the (1) inline hydraulic oil filter. Figure-2 shows the oil tank from front view, the opposite orientation of
Figure-1. Figure-2, E shows the inline oil filter. Spin filter counter-clockwise to remove. Note: If you cannot remove the filter by hand, a pair
of oil filter pliers may be required. The filter will contain some oil. Carefully remove from machine without spilling. To prevent spillage, hold a
plastic bag under the filter itself. The o-ring must be completely removed.
5. It’s time to prep the new oil filter. Rub some oil around the new filter o-ring seal.
Note:
Only rub enough oil to cover the o-ring surface area. This
is to prevent the rubber from cracking or splitting.
6. Now, install the new oil filter. Turn clockwise to tighten. Only turn firmly hand-tight, do not use excessive force or pliers.
7. Next refill the oil tank with AW-46 oil up to the middle of the sight glass (Figure-1, B). Reinstall oil cap to keep debris out.
Note: An oil funnel
may be required. Do not overfill.
8. Now the oil in the tank has been drained and replaced. Locate the (1) hydraulic oil filter (Figure-3, F). This are under the operator’s seat driver
side. Remove as described in step #4 and reinstall as described in steps #5-6. Thus, you have now replaced (2) filters in total.