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Coolant - check/filling/replacement

  Important
  • Before proceeding with operation, read Par. 3.2.2.

NOTE: Before proceeding with any operation on the engine, stop it and allow it to cool.

 

  Warning

  • Presence of steam pressurized coolant danger of burn.
  • The freezing point of the refrigerant mixture depends on the amount concentration in water.
  • As well as lowering the freezing point, the antifreeze also raises the boiling point.
  • A 50% mixture is approved to ensure a general level at protection prevents the formation of rust, galvanic currents and calcium deposits.

NOTE: Component not necessarily supplied by KOHLER.
FILLING

  

  1. Loosen the cap A and fill the radiator with coolant composed of: 50% ANTIFREEZE and 50% decalcified water.
  2. Top liquid up until the pipes inside the radiator are covered by about 5 mm. Do not overfill the radiator, but leave room for the coolant to expand.
  3. For engines equipped with expansion tank, pour in fluid until reaching the max level mark.
  4. Re-tighten the cap A.
  5. Keep it running at idle speed until the cooling liquid level goes down and becomes steady (the waiting times varies according to the ambient temperature).
  6. Stop the engine and allow it to cool.
  7. If there is an expansion tank (C) top liquid up to the mark MAX.
  8. Without expansion tank top liquid up until the pipes inside the radiator are covered by 5 mm. Do not overfill the radiator, but leave room for the coolant to expand.
  9. Tighten the radiator cap A or the expansion tank (C) cap B.

 

 Warning

  • Before starting make sure that the radiator cap and expansion tank cap, if present, are installed correctly to avoid spillage of liquid or vapour at high temperatures.
  • After a few hours of operation stop the engine and allow it to cool. Check and top up the coolant liquid.

 

CHECK

 

 

  1. Perform the operations from point 2 to 9.

 

REPLACEMENT

 

  1. Undo the cap A carefully (circuit under pressure).
  2. Drain all the liquid inside the radiator via shut-off valve D into a suitable container.
  3. Loosen the screws E and remove the fuel filter bracket G.
  4. Unscrew cap F, remove gasket H to allow all the system fluid contained inside the pipes in the engine crankcase to drain.
  5. Tighten the drain oil plug F (tightening torque at 35 Nm).
  6. Fasten the fuel filter bracket G with screws E (tightening torque 25 Nm).
  7. Fill the radiator.

 


 

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