Sampling Interval and Location of Sampling Valve
SMCS Code: 1348; 3080; 4070; 4250; 4300; 5050; 7542
Take the oil samples as close as possible to the standard
intervals. In order to receive the full value from SOS oil
analysis, you must establish a consistent trend of data. In
order to establish a pertinent history of data, perform
consistent scheduled oil samplings that are evenly spaced.
Eccentric Weight Housing
Wheel Drive Gearbox
Drum Drive Gearbox Oil
Vibratory Support Housing
Consult your Caterpillar dealer for complete information and
assistance in establishing an SOS program for your
More Frequent S· O· S Sampling Improves Life Cycle
Traditionally, the suggested SOS sampling intervals have
been at each oil change, 250 hours for engines, or every 500
hours for all other compartments. However, under the
following conditions, a SOS sample interval of 250 hours for
all compartments is recommended.
Studies have revealed, that in some high load applications or
high temperature applications, 500 hours between oil samples
is too long a time span for timely prediction of potential failure
modes. A 250-hour sampling interval provides more data
points between oil change intervals thus increasing the odds
for detecting a potential failure.
Determining Optimal Oil Change Intervals
Sampling compartments every 250 hours also provides oil
condition/performance information to ascertain the optimal
utility of a particular oil. Also, more data points enable close
monitoring of component wear rates while obtaining maximum
lubrication utility. For detailed information on extending oil
change intervals, please contact your Caterpillar dealer.
Optimizing Component Life Cycle
An increased sampling frequency also provides better defined
data tends from one oil change interval to the next. This
enables close monitoring of component life cycle wear patterns
to assure full component life cycle is realized.