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Home›Repair guides›Perkins›Cooling System - Check (Overheating)

Perkins 1103 / 1104 — Cooling System - Check (Overheating)

Testing & diagnosis

For the Perkins 1103 / 1104, from the Perkins service manual.

Applies to: Perkins 1103, Perkins 1104, Perkins 1104 (1103 also covered) engine

Procedure

  1. Check the coolant level in the cooling system; low level allows air into the system.
  2. Check the antifreeze and water mixture; should be 50 percent water and 50 percent 21825166 POWERPART antifreeze.
  3. Check for air in the cooling system from incorrect filling or combustion gas leakage.
  4. Check the sending unit, the radiator for restrictions, the filler cap, and the hoses and clamps.
  5. Check for restrictions in the air inlet and exhaust systems.
  6. Check the water temperature regulator and the water pump impeller.
  7. Consider high outside temperatures; maximum ambient air should not exceed 50 °C (120 °F).
  8. Consider excessive load applied to the engine causing reduced coolant flow.

Specs & values

  • Maximum ambient air temperature 50 °C (120 °F).
  • Coolant mixture 50 percent water and 50 percent 21825166 Amazon eBay POWERPART antifreeze.

Full service-parts list: Perkins 1103 →, Perkins 1104 →

Source: Perkins service 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.

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