F2B ENGINE 41 T RAKKER E URO 4/5 Print 603.93.641 Base - November 2006 Filling the cooling system Preliminary operations For vehicles equipped with just the standard cab heating system or manual air-conditioning: - Fully open the coolant cock on the instrument panel. For vehicles equipped with the automatic air-conditioning system: - Set the temperature control in the cab on the HI position. For vehicles equipped with an additional heater: - The heater must not be turned on. Operations Place a sheet of cardboard between the coolant radiator and the intercooler radiator in order to shorten the time it takes to reach the engine s working temperature (approx. 90 C).
Filling the system Figure 15 87198 After conscientiously following the above warnings, proceed as follows: - Remove the cap (2) from the expansion tub (3). - Pour the coolant into the expansion tub (3) till it is quite full. Bleeding air from the system NOTE For vehicles equipped with an additional heater: - Turn on the heater. - Start the engine and keep the speed just above idling for 5 min. NOTE If the tub empties completely during these first few minutes, stop and engine and top it up at a slow er rate than before. Restart the engine. - After 5 min. running, top up the level of fluid in the expansion tub, if necessary. - Close the expansion tub filler with the cap (2).
Take the engine up to top speed so that the coolant quickly reaches the temperature of full thermostat opening (approx. 90 C) and keep it in this state until all the air is bled out of the system. This is checked by seeing there is no foam or air bubbles in the tub. The longest time it takes to bleed the air from the system completely is approximately 15 minutes from the moment when the thermostat opens (opening starts 85 2 C). NOTE Do not take the filler cap off the expansion tub until the fluid in the system has cooled completely. Any topping up must only be done with the engine cold. This is to avoid: 1 - Operator burns.
2 - Damage to the engine since cooling system pressurization is only created with the fluid heating from the condition of the engine cold. NOTE GENERAL WARNINGS Filling must be done with the engine cold. The cap (1) must not be removed for any reasons whatsoever. To prevent pockets of air forming in the system, the fluid has to be transferred slowly (approximate flow rate 8 litres/min). For vehicles equipped with an additional heater: the percentage of glycols in the coolant must be no greater than 50%.