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Caterpillar — Illustration 4

A Caterpillar service procedure — check it applies to your exact model before use.

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Procedure

  1. Install engine oil filter (1).
  2. Fill the engine with coolant to the correct level. Refer to Operation and Maintenance

Source: manual:Caterpillar-Cat-C9-Industrial-Engine-REH00001.pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.