Perkins — Cooling System Coolant (ELC) - Change
Maintenance
From a Perkins owner's manual covering: 402D-05, 403D-07, 403D-11, 403D-15, 404D-22, 404D-22T, 404D-22TA. Check it applies to your exact model before use.
Applies to: Perkins 402D-05, Perkins 403D-07, Perkins 403D-11, Perkins 403D-15, Perkins 404D-22, Perkins 404D-22T, Perkins 404D-22TA
Before you start
- Pressurized system: Hot coolant can cause serious burns
- Do not use conventional coolant to top off ELC system
Procedure
- Stop engine and allow to cool. Loosen filler cap slowly to relieve pressure.
- Remove filler cap. Open drain cock or remove drain plug on engine and radiator. Drain coolant.
- Flush cooling system with clean water.
- Close drain cock or install drain plug on engine and radiator.
- Fill cooling system with clean water. Install filler cap.
- Start and run engine at low idle until 49 to 66°C (120 to 150°F).
- Stop engine and allow to cool. Drain water. Flush with clean water.
- Close drain cock or install drain plug. Fill with Extended Life Coolant (ELC).
- Start and run engine at low idle, then high idle for one minute to purge air.
- Check coolant level; maintain within 13 mm below filler pipe.
- Inspect filler cap gasket; replace if damaged. Pressure test cap.
- Start engine and inspect for leaks.
Specs & values
- Do not fill faster than 5 L (1.3 US gal) per minute
- Coolant level within 13 mm of filler pipe
Full service-parts list: Perkins 402D-05 →, Perkins 403D-07 →, Perkins 403D-11 →, Perkins 403D-15 →, Perkins 404D-22 →, Perkins 404D-22T →, Perkins 404D-22TA →
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.