ELBOW-FLARED 0307953 - Caterpillar

Table 1
Compartment     Change Interval     Sampling Interval     Sampling Valve    
Engine     250 Hours     250 Hours     Yes    
Transmission     1000 Hours     500 Hours     Yes    
Hydraulics     2000 Hours     500 Hours     Yes    
Differential and Final Drive     2000 Hours     500 Hours     No    
Cooling System     6000 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 g00270599
The sampling valve for the engine oil is located on the engine oil filter base on the right side of the machine.
Illustration 2 g00275274
On later machines, the sampling valve for the transmission oil is located on the transmission oil filter base behind the cab.
Illustration 3 g00038569
For earlier machines without a sampling valve, obtaining a sample of the transmission oil will require a vacuum pump or an equivalent. Withdraw the oil through the filler opening under the access door behind the cab.
Illustration 4 g00275471
Sampling valve (1) for the hydraulic oil is located on the top of the hydraulic tank filter on the right side of the cab platform.
Illustration 5 g00275473
On later machines, there is also sampling valve (2) for the steering hydraulic oil. This sampling valve is under the access door behind the cab.
Illustration 6 g00275009
Front Axle
Illustration 7 g00275010
Rear AxleThe axles are not equipped with sampling valves. Obtaining a sample of the differential and final drive oil will require a vacuum pump or an equivalent. Withdraw the oil through the filler opening on the left side of each axle.
Illustration 8 g00039034
The cooling system is not equipped with a sampling valve. To obtain a sample of the coolant, use the drain valve under the engine compartment on the left rear side of the machine.More Frequent S O S Sampling Improves Life Cycle Management
Traditionally, the suggested S O S sampling intervals have been at each oil change (every 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 the oil in 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 a particular oil. Also, more points of data will allow closer monitoring of component wear rates. Close monitoring also allows you to obtain the maximum use of the oil. For detailed information on extending oil change intervals, please contact your Caterpillar dealer.Optimizing the Component Life Cycle
An increase in the number of