WHEEL & TIRE AR 1337619 - Caterpillar

Take extreme care to insure the cleanliness of the hydraulic oil. Keep the hydraulic oil clean in order to extend the component life and assure the maximum performance.
Note: The hydraulic system also supplies oil to the differentials.
Illustration 1 g01085012
Remove hydraulic tank cap and the strainer.
Wash the hydraulic tank cap and the strainer in clean, nonflammable solvent. Dry the strainer with pressure air.
The drain valve is located on the bottom of the hydraulic oil tank. Remove the plug in order to drain the hydraulic oil tank. Note: The hydraulic oil tank contains 90 L (23.7 US gal) of hydraulic oil.
Drain the oil into a suitable container. Dispose of the used oil in a proper manner.
Place the plug back into the hydraulic oil tank. Make sure that the plug is secure tightly.
Install the strainer.
Refill the hydraulic tank with clean, filtered hydraulic oil. Refer to the Operation and Maintenance Manual, "Refill Capacities and Lubricant Viscosities".
Add the oil through the filler tube.
Maintain the hydraulic oil level at the level mark that is located on the hydraulic tank sight gauge.