SEAL 3K0719 - Caterpillar

Selection of the Oil Change Interval
Your machine may be able to use a 4000 hour interval for the hydraulic oil. The hydraulic oil is in the system that is not integral to the service brakes, the clutches, the final drives, or the differentials. The standard change interval is 2000 hours. The oil should be monitored during intervals of 500 hours. The extended 4000 hour interval can be used if the following criteria are met.Oil Filters
Caterpillar oil filters are recommended. The interval for changing the oil filter should be 500 hours.Oil
The 4000 hour interval for changing the oil is for the following oil types.
Caterpillar Hydraulic Oil HYDO
Caterpillar Transmission/Drive Train Oil (TDTO)
Caterpillar TDTO -TMS
Caterpillar Diesel Engine Oil
Caterpillar Biodegradable Hydraulic Oils HEES
Caterpillar Multipurpose Tractor Oil (MTO)
Heavy-duty diesel engine oil with a minimum zinc content of 900 ppm If Caterpillar oils cannot be used, use heavy-duty oils with the following classification: Cat ECF-1, API CG-4, API CF and TO-4 These oils must have a minimum zinc additive of 0.09 percent (900 ppm).Note: Industrial hydraulic oils are not recommended in Caterpillar hydraulic systems.Monitoring the Condition of the Oil
The oil should be monitored during intervals of 500 hours. Caterpillar's standard S O S Fluids Analysis or an equivalent oil sampling program should be used.The current guidelines for cleanliness of the oil should be observed. Refer to "Measured Data".If an oil sampling program is not available, the standard 2000 oil change interval should be used.Measured Data
An oil sampling program may be used to monitor the following information:
Significant changes in wear metals should be monitored. These metals include iron, copper, chromium, lead, aluminum, and tin.
Significant changes in the following metals should be monitored: zinc, calcium, magnesium and phosphorus
Contaminants should not be present. These contaminants include fuel and antifreeze. Water content should be .5 percent or less.
The silicon level should not exceed 15 parts per million for new oil. The particle counts should be monitored.
The recommended level of cleanliness for Caterpillar machines that are operated in the field is ISO 18/15 or cleaner. The cleanliness should be monitored by particle count analysis. Contamination levels should not exceed normal levels by more than two ISO codes. Action should be taken