GAUGE AS-LIQUID LEVEL 6E6550 - Caterpillar

Consult your Caterpillar dealer for complete information and for assistance in establishing a S O S program for your equipment.Location of Sampling Valves
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Sampling valve for the engine oilThe sampling valve for the engine oil is located on the right side of the engine, below the engine oil cooler.
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Sampling valve for the transmission and torque converter oilThe sampling valve for the transmission and torque converter oil is located on the torque converter outlet relief valve. The torque converter outlet relief valve is located on the left side of the torque converter updrive housing.
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Sampling valve for the hydraulic system oilThe sampling valve for the hydraulic system oil is located on the steering control valve.
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Sampling port for the front differential
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Oil sampling port for the rear differential oil
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Sampling port for the final drive oilThe axles are not equipped with sampling valves. Obtaining a sample of the differential and final drive oils will require a vacuum pump or an equivalent. Withdraw the oil through the filler opening on each axle and final drive.
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The cooling system is not equipped with a sampling valve. Obtaining a sample of the coolant will require a vacuum pump or an equivalent. Slowly remove the cooling system pressure cap on the top of the radiator and withdraw the coolant through the filler opening.More Frequent S O S Sampling Improves Life Cycle Management
Traditionally, the suggested S O S 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