Caterpillar C1.7 / C2.2 — Cooling System Coolant (ELC) - Change
Maintenance
For the Caterpillar C1.7 / C2.2, from the Caterpillar owner's manual.
Applies to: Caterpillar C2.2
Before you start
- Pressurized System: Hot coolant can cause serious burns.
Procedure
- Stop the engine and allow it to cool; loosen the filler cap slowly to relieve pressure.
- Remove the engine drain plug and the radiator drain plug; drain the coolant.
- Flush the cooling system with clean water to remove debris.
- Close the drain valve and install the drain plugs.
- Fill the cooling system with clean water and install the filler cap.
- Run the engine at low idle until temperature reaches 49 °C to 66 °C.
- Stop the engine and allow it to cool; drain and flush with clean water.
- Fill the cooling system with Extended Life Coolant (ELC).
- Run the engine at high idle for 1 minute to purge air; stop the engine.
- Maintain coolant at the maximum mark and install the filler cap.
Specs & values
- Do not fill the cooling system faster than 5 L per minute
- Filler cap pressure three cylinder engine 95 kPa
- Filler cap pressure four cylinder engine 110 kPa
Full service-parts list: Caterpillar C2.2 →
Source: Caterpillar 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.