JCB ATV/Utility vehicles, Workmax/Groundhog

Coolant capacity & service interval

JCB ATV/Utility vehicles, Workmax/Groundhog coolant capacity ranges from 2,8 to 10 liters. Service intervals include checks at 10 hours and 2000 km/125 hours, and changes at 1000 hours/24 months and 16000 km/24 months/1000 hours. The data covers 3 configurations.

The configuration chart below lists fill volumes and service intervals for each engine and trim variant.

TypeSpecifications
Groundhog 4x4, Kohler KDW1003 Stage III/T3
  • Use: Normal
  • Capacity 5,5 liter
  • Check 10 hours
  • Change 1000 hours/ 24 months
Groundhog 6x4, Kohler KDW1003 Stage III/T3
  • Use: Normal
  • Capacity 10 liter
  • Check 10 hours
  • Change 1000 hours/ 24 months
Workmax 800D, Yanmar 3TNE68
  • Use: Normal
  • Capacity 2,8 liter
  • Check 2000 km/ 125 hours
  • Change 16000 km/ 24 months/ 1000 hours

Additional Notes

  • The Groundhog 6x4 with Kohler KDW1003 Stage III/T3 engine carries a cooling system capacity of 10 liters, which is nearly double the 5.5-liter capacity of the Groundhog 4x4 fitted with the same engine. The difference reflects the larger cooling circuit required by the 6x4 configuration despite sharing an identical powertrain.
  • Both Groundhog variants specify a coolant check interval of every 10 hours under normal use conditions, indicating a relatively frequent monitoring requirement compared to many utility vehicle applications.
  • The Groundhog 4x4 and 6x4 share a coolant change interval of 1,000 hours or 24 months under normal use, whichever comes first, meaning time and operational hours are treated as parallel triggers rather than independent ones.
  • The JCB Workmax 800D with Yanmar 3TNE68 engine holds 2.8 liters of coolant, the smallest cooling system capacity across the three configurations listed here.
  • The Workmax 800D coolant check interval is expressed in dual terms: 2,000 km or 125 hours under normal use conditions. The inclusion of a distance-based figure alongside an hour-based one reflects the road-capable nature of the 800D compared to the hour-only intervals on the Groundhog models.
  • The Workmax 800D coolant change interval extends to 16,000 km, 1,000 hours, or 24 months under normal use, with all three metrics serving as independent triggers. The 16,000 km distance threshold is a specification unique to the 800D among the configurations listed.

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