Liugong Tracked excavators
Coolant capacity & service interval
Liugong tracked excavators require coolant with a capacity of 30 liters. Service intervals include checks every 10 hours and changes every 2000 hours or 24 months. The data covers 2 configurations.
The configuration chart below lists fill volumes and service intervals for each engine and trim variant.
| Type | Specifications |
|---|---|
| CLG920D, Cummins 6BTAA5.9-C (Stage II/T2) |
|
| CLG922D, Cummins 6BTAA5.9-C (Stage II/T2) |
|
Additional Notes
- The Liugong CLG920D and CLG922D tracked excavators, both fitted with the Cummins 6BTAA5.9-C (Stage II/T2) engine, share an identical cooling system capacity of 30 liters, which reflects a full system fill volume rather than a partial top-up quantity.
- A 30-liter cooling system capacity is consistent with the scale of a 5.9-liter inline six-cylinder diesel engine paired with the radiator, hoses, and reservoir that make up the complete circuit.
- The coolant change interval for both configurations is set at 2000 hours or 24 months, whichever comes first, meaning time elapsed can trigger a service requirement even when the hour threshold has not been reached.
- A 24-month calendar limit on coolant life reflects the chemical degradation of corrosion inhibitors and antifreeze additives over time, independent of machine operating hours.
- The cooling system on both models calls for a check interval of every 10 hours, which is among the most frequent service touchpoints and aligns with daily or near-daily inspection routines on active job sites.
- The 10-hour check interval for coolant does not involve a fluid change but rather a level and condition inspection, distinguishing routine monitoring from the 2000-hour full replacement service.