CONTROL GP-FAN 2929624 - 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 Tools and Shop Products Guide" for tools and supplies suitable to collect and contain fluids on Caterpillar products.Dispose of all fluids according to local regulations and mandates.
Take the oil samples as close as possible to the standard intervals. To receive the full value from S O S oil analysis, you must establish a consistent trend of data. To establish a pertinent history of data, perform consistent oil samplings at set intervals.Operate the machine for a few minutes before you obtain the oil sample. This will thoroughly mix the oil for a more accurate sample.Reference: Refer to Special Publication, PEHP6001, "How To Take A Good Oil Sample" for more information about obtaining an oil sample.
Table 1
Type of Fluid     Change Interval     Sampling Interval     Sampling Valve    
Engine Oil     250 Hours     250 Hours     Yes    
Transmission Oil     1000 Hours     500 Hours     Yes    
Hydraulic Oil     2000 Hours     500 Hours     Yes    
Differential and Final Drive Oil     2000 Hours     500 Hours     No    Consult your Caterpillar dealer for complete information and for assistance in establishing an S O S program for your equipment.Location of Sampling Valves
Illustration 1 g00811917
The hydraulic oil sampling valve is located under the cab.
Illustration 2 g00811918
The engine oil sampling valve is located on the left side of the machine near the engine oil filter.
Illustration 3 g00811920
The transmission oil filter is located on the machine near the articulation joint of the machine.
Illustration 4 g00667052
Typical example of the front axleThe axles are not equipped with oil sampling valves. The oil sample must be obtained by using a vacuum pump or an equivalent. Withdraw the oil through the filler plug opening on the side of the axles.The cooling system does not contain a sampling valve. The coolant sample needs to be obtained through the filler cap in the radiator tank.More Frequent S O S Sampling Improves Life Cycle Management
The suggested sampling intervals have been at each oil change (250 hours for engines and every 500 hours for all other compartments). However, more frequent oil sampling is recommended in severe applications. If the machine is operated under a high load and/or in high temperature conditions, sample all compartments at every 250 hour interval.Application
Studies have revealed that obtaining oil samples at every 500 hours is too long a time interval in some applications in order to predict potential failure modes. A sampling interval at every 250 hours provides more data between oil change intervals. More data increases the chance for detecting a potential failure.Determining Optimum Oil Change Intervals
Sampling the compartments at every 250 hours provides information for oil condition and for oil performance. This information is used to determine the optimum usable life of