Perkins 1506 — Coolant (ELC) - Change

Maintenance · Cooling system

For the Perkins 1506, from the Perkins owner's manual.

Applies to: Perkins 1506A engine, Perkins 1506C engine, Perkins 1506D engine

Procedure

1. Stop the engine and allow to cool; loosen filler cap slowly to relieve pressure and remove.
2. Remove drain plug (1) and the radiator drain plug; allow coolant to drain.
3. Flush cooling system with clean water to remove debris.
4. Fill with clean water, install filler cap, run engine until normal operating temperature.
5. Stop engine, cool, remove cap and drain plugs; drain water and flush with clean water.
6. Check O ring seal on drain plug, replace if damaged; install drain plugs and tighten drain plug (1) to 80 N·m (59 lb ft).
7. Fill with Extended Life Coolant (ELC); do not install filler cap.
8. Run engine until normal operating temperature; stop engine.
9. Maintain coolant level at maximum mark.
10. Clean and inspect filler cap gasket; replace or pressure test cap as needed.
11. Start engine and inspect cooling system for leaks and proper operating temperature.

Source: Perkins owner's manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.

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