Iseki TJ/TJA

Coolant capacity & service interval

Iseki TJ/TJA coolant capacity ranges from 1,1 to 11 liters. Service intervals include checks at 10 hours and changes at 12, 24, or 1200 hours. The data covers 13 configurations.

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

TypeSpecifications
TJA8080, PL/L - Agco Eco 33 AWIC (2013- )
  • Use: Normal
  • Capacity 11 liter
  • Check 10 hours
  • Change 1200 hours/ 24 months
TJA8080, PL/L - Agco Eco 33 AWIC (2013- )
  • Use: Initial service
  • Capacity 11 liter
  • Change 12 months
TJA8080, P1L/L1 - Agco Eco 33 AWIC (2013- )
  • Use: Normal
  • Capacity 11 liter
  • Check 10 hours
  • Change 1200 hours/ 24 months
TJA8080, P1L/L1 - Agco Eco 33 AWIC (2013- )
  • Use: Initial service
  • Capacity 11 liter
  • Change 12 months
TJA8090, P/PL - Agco Eco 33 AWIC (2013- )
  • Use: Normal
  • Capacity 11 liter
  • Check 10 hours
  • Change 1200 hours/ 24 months
TJA8090, P/PL - Agco Eco 33 AWIC (2013- )
  • Use: Initial service
  • Capacity 11 liter
  • Change 12 months
TJA8090, P1L/L1 - Agco Eco 33 AWIC (2013- )
  • Use: Normal
  • Capacity 11 liter
  • Check 10 hours
  • Change 1200 hours/ 24 months
TJA8090, P1L/L1 - Agco Eco 33 AWIC (2013- )
  • Use: Initial service
  • Capacity 11 liter
  • Change 12 months
TJA8100, P1L/1L - Agco Eco 33 AWIC (2013- )
  • Use: Normal
  • Capacity 11 liter
  • Check 10 hours
  • Change 1200 hours/ 24 months
TJA8100, P1L/1L - Agco Eco 33 AWIC (2013- )
  • Use: Initial service
  • Capacity 11 liter
  • Change 12 months
TJA8100, P/PL - Agco Eco 33 AWIC (2013- )
  • Use: Normal
  • Capacity 11 liter
  • Check 10 hours
  • Change 1200 hours/ 24 months
TJA8100, P/PL - Agco Eco 33 AWIC (2013- )
  • Use: Initial service
  • Capacity 11 liter
  • Change 12 months
TJ75 (2008- )
  • Use: Normal
  • Capacity 6,5 liter (Radiator)
  • Capacity 1,1 liter (Reservoir)
  • Check 10 hours
  • Change 24 months

Additional Notes

  • The Iseki TJ75 cooling system splits its total capacity across two separate points: 6.5 liters in the radiator and 1.1 liters in the reservoir, bringing the combined system volume to 7.6 liters. Reservoir capacity is listed separately because the overflow tank is a distinct service point with its own fill level.
  • TJA8080, TJA8090, and TJA8100 variants fitted with the Agco Eco 33 AWIC engine all share an 11-liter cooling system capacity, regardless of transmission designation (P/PL or P1L/L1). The uniform figure across all three model numbers and both transmission variants indicates a common engine cooling circuit in the TJA series from 2013.
  • The TJ75 coolant change interval is set at 24 months under normal use, with no hour-based threshold specified. A calendar-only interval is common on smaller machines where annual operating hours may be too low to trigger a mileage or hour-based change within a reasonable timeframe.
  • All TJA8080, TJA8090, and TJA8100 configurations carry a dual-trigger change interval of 1200 hours or 24 months under normal use, whichever comes first. The 1200-hour threshold reflects the higher annual workloads typical of larger agricultural tractors, where calendar intervals alone may be insufficient to protect the cooling system.
  • The initial service interval for all TJA8080, TJA8090, and TJA8100 configurations is set at 12 months, half the 24-month normal-use calendar interval. An earlier first change is standard practice when a cooling system has been filled with factory coolant, as initial fill fluid may contain residual manufacturing contaminants or a different inhibitor concentration than the service-fill specification.
  • The TJ75 specifies a coolant level check every 10 hours, a frequency consistent with daily or near-daily pre-operation inspections on working agricultural equipment. The same 10-hour check interval applies to all TJA series configurations, indicating a shared inspection standard across the TJ/TJA range.

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