Cat HYDO Advanced 10 Oil Change Interval
The standard Cat HYDO Advanced 10 oil change interval is every 3000 service hours or 18 months.
A maintenance interval of 6000 service hours or 3 years for changing the hydraulic oil is available. The extended interval requires S·O·S monitoring of the hydraulic oil. The interval for S·O·S monitoring is every 500 hours. The maintenance interval for the hydraulic oil filter is not changed.
Machines with hammers are not included in the maintenance interval of 6000 service hours or 3 years. Machines with hammers must use the intervals that are listed in the Maintenance Interval Schedule. Machines that are used in severe conditions are not included in the maintenance interval of 6000 service hours or 3 years. Machines that are used in severe conditions must use the interval in the Maintenance Interval Schedule.
Procedure to Change the Hydraulic Oil
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Hot oil and hot components can cause personal injury. Do not allow hot oil or hot components to contact skin. |
- Park the machine on level ground.
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Illustration 1 g00825578 - Extend the stick and the bucket fully. Lower the boom so that the bucket is rested on the ground. Lower the blade to the ground.
- The hydraulic tank is located under the access cover on the right side of the machine. Open the access cover for the hydraulic tank. Clean the area around the hydraulic oil filler cap in order to prevent dirt from entering the hydraulic tank.
- Relieve the internal pressure from the hydraulic tank by loosening the hydraulic oil filler cap. After the pressure is relieved, remove the hydraulic oil filler cap.
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Illustration 2 g01188740 Note: Refer to Operation and Maintenance Manual, "General Hazard Information" for information on Containing Fluid Spillage.
- Remove the hydraulic oil drain plug. Allow the oil to drain into a suitable container.
- Clean the drain plug and inspect the drain plug. Replace the drain plug if the drain plug is damaged or worn. Reinstall the plug.
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Illustration 3 g01188745 - Remove bolt (1), washer (2), and left cover (3).
- Remove spring (4) and screen (5).
Note: Do not allow spring (4) to fall into the hydraulic tank.
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Illustration 4 g00825626 - Clean screen (5) and inspect screen (5). Replace the screen if the screen is damaged or badly contaminated.
- Inspect O-ring seal (6). Replace the O-ring seal if necessary.
- Install the screen by reversing step 7 and step 8.
Note: Make sure that the O-ring seal and the spring are properly positioned during installation.
- Fill the hydraulic system oil tank. Refer to Operation and Maintenance Manual, "Capacities (Refill)".
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Illustration 5 g00101462 - Inspect the pressure cap. Clean the pressure cap. Replace the pressure cap if damage is evident.
- Install the pressure cap.
- Start the engine and run the engine for a few minutes. Slowly operate the control levers in order to cause the hydraulic oil to flow through the circuits.
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Illustration 6 g00825578 - Extend the stick and the bucket fully. Lower the boom so that the bucket is rested on the ground. Lower the blade to the ground.
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Illustration 7 g01188773 - Maintain the hydraulic oil level between mark (A) and mark (B) of the sight gauge.
- Close the right side access door.
