797F and 797F XQ Off-Highway Trucks Visual Service Procedure (VSP) Maintenance Intervals Caterpillar

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Hot oil and hot components can cause personal injury. Do not allow hot oil or hot components to contact the skin.

Obtain S·O·S samples as close as possible to the recommended sampling interval. To receive the full effect of S·O·S analysis, you must establish a consistent trend of data. To establish a pertinent history of data, perform consistent samplings that are evenly spaced. Supplies for collecting samples can be obtained from your Cat dealer.

Start By:

a. Prepare the machine for maintenance. Refer to Operation and Maintenance Manual, "Prepare the Machine for Maintenance".

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Illustration 1	g06140197

1. Start the engine, and operate the engine at low idle.

2. Open the cap for the sampling valve.

3. Clean the sampling valve, and obtain a sample of the hoist and brake oil through the sampling valve. Submit the sample for S·O·S analysis.

   Refer to the following publications for 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"

4. Close the cap for the sampling valve.

5. Stop the engine.