SPACER 3K6399 - Caterpillar

Escaping fluid under pressure, even a pinhole size leak, can penetrate body tissue, causing serious injury, and possible death. If fluid is injected into your skin, it must be treated immediately by a doctor familiar with this type of injury.Always use a board or cardboard when checking for a leak.
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.
If the oil becomes contaminated, premature component failure could result. Contaminated oil can also contribute to overheating.Use the following procedure to determine the contamination of the oil in the hydraulic system.
Illustration 1 g01214638
Obtain a hydraulic oil sample from "SOS" tap (1), which is on the "Feeder System Charge Filter".Note: Refer to Operation and Maintenance Manual, KEBU7525, "Sampling Interval and Location of Sampling Valve", for the correct procedure.
Check the hydraulic filter element for foreign materials.
Bronze colored particles indicate pump failure, or the particles indicate motor port plate failure.
Shiny steel particles indicate pump failure, or the particles indicate motor piston failure.
Rubber particles indicate a seal failure, or the particles indicate a hose failure.
Aluminum particles indicate steering pump failure.Note: If any of these particles are found in the hydraulic filter element, all components of the hydraulic oil system must be cleaned. Do not use any damaged parts. Any damaged parts must be removed, and new parts must be installed.