Caterpillar — Illustration 4
A Caterpillar service procedure — check it applies to your exact model before use.
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Procedure
- Install engine oil filter (1).
- 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.