LINES GP-BOOM 3157457 - Caterpillar

Caterpillar recommends obtaining an oil sample and performing a SOS Oil Analysis at regular intervals to help prevent damage to components. Use the information in "Sampling Interval and Location of the Sampling Valve" in this OMM to find the proper sampling interval for your machine.
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Check the oil level with sight gauge (1) which can be seen through the right side access door.Note:
Maintain the pump drive oil level within sight gauge (1) .
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If oil needs to be added, remove the plug (2) for the fill port. Add oil through the opening.
Clean the plug (2) and install the plug (2) .