Doosan — Drain and Flush Cooling System
Maintenance
From a Doosan owner's manual covering: G 100, G100-SIIIA, G100SIIIA, G150, G150-SIIIA, G200-SIIIA, G60, G60-SIIIA, G60SIIIA, G80, G80-SIIIA, G80SIIIA. Check it applies to your exact model before use.
Applies to: Doosan G100-SIIIA, Doosan G150-SIIIA, Doosan G200-SIIIA, Doosan G60-SIIIA, Doosan G80-SIIIA, John Deere 4045HFG81 engine, John Deere 4045HFG82 engine, John Deere 6068HFG82 engine
Before you start
- Explosive release of fluid from pressurized cooling system can cause serious burns; only remove filler cap when cool.
Procedure
- Slowly open the radiator cap.
- Remove oil cooler housing drain plug and open radiator drain valve; drain all coolant.
- Close all drain orifices after coolant has drained.
- Fill with clean water, run engine until water passes through thermostat, then drain.
- Fill with cleaning product such as PMCC2610 or PMCC2638 and follow label directions.
- Drain cleaner, fill with water, flush, run and drain again.
- Check cooling system hoses; replace as necessary.
- Close orifices, fill with specified coolant; loosen temperature sensor or plug to vent air.
Full service-parts list: Doosan G100-SIIIA →, Doosan G150-SIIIA →, Doosan G200-SIIIA →, Doosan G60-SIIIA →, Doosan G80-SIIIA →, John Deere 4045HFG81 engine →, John Deere 6068HFG82 engine →
Source: Doosan 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.