John Deere 1100 series

Coolant capacity & service interval

John Deere 1100 series coolant capacity ranges from 30 to 34 liters. Service intervals include checks at 10 hours or 12 months/200 hours and changes at 24 months. The data covers 10 configurations.

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

TypeSpecifications
1174 SII (1991-1992)
  • Use: Normal
  • Capacity 30 liter
  • Check 12 months/ 200 hours
1174 SII Hydro/4 (1991-1992)
  • Use: Normal
  • Capacity 30 liter
  • Check 12 months/ 200 hours
1177 SII (1991-1992)
  • Use: Normal
  • Capacity 30 liter
  • Check 12 months/ 200 hours
1177 SII Hydro/4 (1991-1992)
  • Use: Normal
  • Capacity 34 liter
  • Check 12 months/ 200 hours
1188 SII Hydro/4 (1991-1992)
  • Use: Normal
  • Capacity 34 liter
  • Check 12 months/ 200 hours
1166 (1989-1994)
  • Use: Normal
  • Capacity 30 liter
  • Check 12 months/ 200 hours
1166 SII (1989-1994)
  • Use: Normal
  • Capacity 30 liter
  • Check 12 months/ 200 hours
1166 SII Hydro/4 (1989-1994)
  • Use: Normal
  • Capacity 30 liter
  • Check 12 months/ 200 hours
1188 (1988-1992)
  • Use: Normal
  • Capacity 34 liter
  • Check 10 hours
  • Change 24 months
1188 Hydro/4 (1988-1992)
  • Use: Normal
  • Capacity 34 liter
  • Check 10 hours
  • Change 24 months

Additional Notes

  • Across the John Deere 1100 series, cooling system capacities fall into two values: 30 liters and 34 liters. The 30-liter figure applies to the 1166, 1166 SII, 1166 SII Hydro/4, 1174 SII, 1174 SII Hydro/4, and 1177 SII configurations, while the 34-liter figure applies to the 1177 SII Hydro/4, 1188, 1188 Hydro/4, and 1188 SII Hydro/4.
  • The 4-liter difference between the 1177 SII and the 1177 SII Hydro/4 cooling systems is notable within the same model family. The standard 1177 SII holds 30 liters, whereas the Hydro/4 variant of the same model requires 34 liters, reflecting the additional thermal load or circuit volume associated with the hydrostatic four-wheel-drive drivetrain.
  • The 1188 and 1188 Hydro/4 (1988-1992) share a 34-liter cooling system capacity and carry a specified coolant change interval of 24 months under normal use conditions. A 24-month change interval is a time-based service limit, meaning the coolant is replaced regardless of hours accumulated once that calendar period has elapsed.
  • The 1188 and 1188 Hydro/4 also specify a check interval of every 10 hours, which is considerably more frequent than the 12-month or 200-hour check intervals listed for the SII-generation models. A 10-hour check interval is typically associated with daily or near-daily inspection routines during active harvest operation.
  • The 1188 SII Hydro/4 (1991-1992) retains the 34-liter capacity of the earlier 1188 variants but shifts to the 12-month/200-hour check interval rather than the 10-hour check and 24-month change schedule. No coolant change interval is listed for the 1188 SII Hydro/4, in contrast to the non-SII 1188 models.
  • The check interval of 12 months or 200 hours, whichever comes first, applies to all 1166 and 1174 SII variants as well as the 1177 SII and 1177 SII Hydro/4. A dual-trigger interval of this type means the service action is due when either the time threshold or the operating hour threshold is reached first.
  • The 1174 SII and 1174 SII Hydro/4 share an identical 30-liter capacity and 12-month/200-hour check interval, with both models spanning only the 1991-1992 production years. The Hydro/4 designation indicates a hydrostatic four-wheel-drive system, yet the cooling system specifications remain unchanged from the standard 1174 SII in this case.

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