RING 4M7806 - Caterpillar

Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Refer to Special Publication, NENG2500, "Caterpillar Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Caterpillar products.Dispose of all fluids according to local regulations and mandates.
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The hydraulic filters are located on the right side of the machine under the platform. There are two hydraulic oil filters. Each filter must be replaced during this procedure.
Use a strap type wrench to remove each filter element. Dispose of the used filter elements properly.
Clean the filter mounting bases. Make sure that all of the used seals are completely removed.
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Apply a thin coat of hydraulic oil to the seals on the new filters. Install each new hydraulic oil filter hand tight until the seals of the hydraulic oil filters contact each filter base. Note the position of the index marks on each filter in relation to a fixed point on each filter base.Note: There are rotation index marks on each hydraulic oil filter that are spaced 90 degrees or 1/4 of a turn away from each other. When you tighten the hydraulic oil filters, use the rotation index marks as a guide.
Tighten each filter according to the instructions that are printed on each filter. Use the index marks as a guide. For non-Caterpillar filters, use the instructions that are provided with the filters.Note: You may need to use a Caterpillar strap wrench, or another suitable tool, in order to turn the filter to the amount that is required for final installation. Make sure that the installation tool does not damage the filter.
Start the engine and run the engine at low idle. Inspect the hydraulic system for leaks.
Illustration 3 g01185406
The oil gauge and the hydraulic oil filler are on the left side of the machine above the platform. Maintain the oil level above the "ADD COLD" mark on the sight gauge. Add hydraulic oil, if necessary.