HYDRAULIC AR 3479774 - Caterpillar

Hot oil and hot components can cause personal injury. Do not allow hot oil or hot components to contact skin.
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, PERJ1017, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat® products.Dispose of all fluids according to local regulations and mandates.
The normal oil change interval for the machine is Every 500 Service Hours or every year when the following conditions are met:
Use an engine oil in the Operation and Maintenance Manual, "Lubricant Viscosities".
Cat filters are used.
The altitude does not exceed 2300 m (7545 ft).An oil change interval of Every 250 Service Hours or every 6 months is required when the following conditions occur:
Not using a recommended engine oil in the Operation and Maintenance Manual, "Lubricant Viscosities".
Cat filters are not used.
The altitude exceeds 2300 m (7545 ft).Refer to the results of the S O S oil analysis to determine if the oil change interval should be decreased. Consult your Cat Dealer for detailed information regarding the optimum oil change interval.Note: If the sulfur content in the fuel is greater than 1.5% by weight, use an oil that has a TBN of 30 and reduce the oil change interval by one-half.Park the machine on a level surface. Stop the engine.Note: Drain the crankcase while the oil is warm. This allows waste particles that are suspended in the oil to drain. As the oil cools, the waste particles will settle to the bottom of the crankcase. The particles will not be removed by draining the oil and the particles will recirculate in the engine lubrication system with the new oil.
Illustration 1 g02854656
Open the crankcase access cover that is under the rear of the machine. Remove the bolts that secure the access cover.Note: Refer to Operation and Maintenance Manual, "General Hazard Information" for information on Containing Fluid Spillage.
Illustration 2 g00740812
Remove the crankcase drain plug. Allow the oil to drain into a suitable container.Note: Discard any drained fluids according to local regulations.
Clean the drain plug and install the drain plug.
Install the crankcase access cover.
Open the engine hood.
Illustration 3 g02854657
Remove the oil filter. Refer to Operation and Maintenance Manual, "Oil Filter - Inspect". Discard the used oil filter properly.
Clean the filter housing base. Make sure that all the former filter gasket is removed.Note: This oil filter is a cartridge type filter. This type of filter cannot be reused.Note: Always discard used filters according to local regulations.
Illustration 4 g00101634
Apply a thin coat of engine oil to the gasket of the new filter.
Install the new filter by hand. When the gasket contacts the filter base, turn the filter by 270 degrees more. This will tighten the filter sufficiently.
Illustration 5 g02849195
Remove the oil filler plug.
Fill the crankcase with new oil. Refer to Operation and Maintenance Manual, "Capacities (Refill)" and Operation and Maintenance Manual,