BELT-SERPENTINE 4762969 - Caterpillar

Sampling Locations
For systems equipped with a sampling valve, take sample with engine running at low idle. For systems without a sampling valve, take sample with engine stopped. Take ALL samples with transmission in neutral, parking brake applied, dump body lowered (except when the body support is installed), and steering frame lock Installed.Take ALL samples with transmission in neutral, parking brake applied, dump body lowered (except when the body support is installed), and steering frame lock Installed.Wipe the area around the sampling valve or the plug before taking a sample in order to prevent contamination. Use a clean sampling gun when accessing an oil sample through a plug opening. Clean and inspect the plug after obtaining an oil sample through a plug opening.Cooling System Coolant Sample (Level 1 and 2)
Illustration 1 g03486336
The sampling valve for the coolant is located under the hood on the coolant line above the engine.Differential and Final Drives Oil Sample
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Plug location for sampling the differential/final drive oil. Obtain the differential/final drive oil samples through the plug openings with a clean sampling gun.Obtain an oil sample from each of the three differential/final drive sets.Engine Oil Sample
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The sampling valve for the oil is located under the hood on the oil filter base at the left front side of the engine.Hydraulic System Oil Sample
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The sampling valve for the hoist/brake oil is located on the top of the hoist/brake tank. The hoist/brake tank is located on the left side of the machine under the hydraulic tank access cover.Torque Converter and Transmission Oil Sample
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The sampling valve for the torque converter/transmission oil filter is located under the hood near the primary fuel filter.Transfer Gear Oil Sample
Illustration 6 g02928176
Additional S O S Information:
Refer to the following publications for additional S O S information:
Operation and Maintenance Manual, "S O S Information"
Special Publication, SEBU6250, "Caterpillar Machine Fluids Recommendations", "S O S Services Analysis"
Special Publication, PEGJ0047, "How to Take a Good S O S Sample"
Special Publication, PEGJ0046, "S O S Services: Understanding Your Results"
Special Publication, PEHJ0191, "S O S Fluid Analysis"