Bleed Procedure (32/40EKOZD & 28/35EFKOZD Models)
1. Remove the coolant fill cap. See the Typical (14-24EKOZD and 12-20.5EFKOZD Models) figure in the Service Views
section for location.
2. Slowly fill the coolant system.
Figure 39 Bleed Point Location
3. Loosen the cap screw C (shown in Figure 39) to release any air and tighten the cap screw C. Torque cap screw to
8 Nm.
Note:
The max. filling level for the exhaust manifold is in correspondence of cap screw C. Complete the coolant refilling
procedure as soon as the coolant starts leaking out of cap screw C.
4. Retighten cap screw C (if not already done) and the coolant fill cap.
5. After a few minutes of operation, stop the engine and allow the liquid to cool and recheck the coolant level.
3.9.3 Flushing and Cleaning
For optimum protection, drain, flush, and refill the cooling system at the interval listed in the service schedule.
Flushing and Cleaning Procedure
1. Press the generator set OFF/RESET button to shut down the generator set.
2. Disconnect the power to the battery charger, if equipped.
3. Disconnect the generator set engine starting battery, negative (-) lead first.
4. Open the pressure cap and open petcocks located at the heat exchanger, engine block, and cooling system, and let
the system drain completely. Some models may have petcocks located behind the belt guard. Remove the pressure
cap to simplify draining.
5. Drain, clean, and flush the coolant recovery tank.
6. Flush the system with clean water.
7. Fill the system with recommended coolant.
8. Check that the generator set is OFF.
9. Reconnect the generator set engine starting battery, negative (-) lead last.
10. Reconnect the power to the battery charger, if equipped.
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