Cleaning the Cooling System After Contamination

Cleaning the cooling system after water has been contaminated with oil

Cleaning

1. Drain the coolant (drain plugs on cooler and crankcase). There is no drain plug in the crankcase as from Model 89. Drainage facility from the plastic auxiliary connection piece of the water pump.





2. Remove the water expansion tank and clean separately with cold cleaning agent.

3. Pour 2 liters of cold cleaning agent into the coolant system. Fill up with water (approx. 6 liters).

4. Allow the engine to warm up and bleed.

5. Once the thermostat has opened, run the engine at a higher speed for approx. 2 minutes with the heating turned on.

6. Shut down the engine, drain oft all cleaning fluid.

7. Fill the cooling system with new cold cleaning agent and fresh, warm water and clean again.


Rinsing

Then rinse out with clear, warm water. Repeat the rinsing procedure until there is no evidence of oil or cold cleaning agent in the water.


Filling the cooling system

1. Fill the cooling system with warm water and antifreeze.

2. Bleed the cooling system.