Coolant replacement

6 Maintenance

Coolant replacement

Every 2000 operating hours.

53 Coolant replacement

The coolant has to be replaced every 2000 operating hours or at least once every two years.

N.B. Replacing the coolant may also be necessary as part of the winter storage procedure; in case that the coolant present in the cooling system offers insufficient protection for the winter.

Danger

Be aware of the risk of skin burning during draining the hot coolant! Used coolant must be collected in a container for proper disposal according to laws and regulations.

Warning

Cooling system protective liquids must be disposed of in accordance with environmental regulations.

6 Maintenance

1 1

Coolant replacement

Every 2000 operating hours.

2

54 Draining of coolant

18

• Remove the drain plug from the heat exchanger housing (1). • Remove the filler cap to bleed the cooling system and check that all the fluid is running out.

• Refit the drain plug after all the liquid has run out. N.B. A small part of the coolant will remain in the engine block.

• If necessary, remove the drain plug (2) from the engine block to fully drain the engine.

6 Maintenance

Coolant replacement

Every 2000 operating hours.

55 Filling the cooling system

• Fill the cooling system as indicated on pages 20 to 23.

Use a mixture of 40% antifreeze (ethylene-glycol based) and 60% tap water or use a special coolant.

For specifications see page 119. Coolant quantity:

litres Imp. pt US pt 4 cyl. : 8 14.1 16.9 6 cyl. : 11 19.4 23.2 • Check the coolant level in the expansion tank after the engine has first been in operation, such that the operating temperature has been reached and the engine has cooled back to the ambient temperature.

Top up, if necessary.

Caution

Never fill the cooling system with sea water or brackish water.