Radiator system Drive Rapid radiator cleaning system The Clean-Fix rapid radiator cleaning system (code M74) pro- vides effective cleaning of a soiled radiator by turning the fan blades about their own axis and raising the rpm. This ensures that the optimal cooling output is available in every situation. b b Note On vehicles with code M74, a safety insert is also installed in the air filter housing in addition to the air filter. This must also be replaced with every third air filter replacement. Activation of the reversible fan can be performed while dri- ving or working using a button on the center console.
It is also possible to activate an intermittent switching func- tion (automatic start-up every 10 min). G09.10-3152-00 Safety insert in air filter housing G20.20-3249-00 Clean-Fix fan (code M74) 1) Cooling 2) Switchover 3) Cleaning Introduction of the New Unimog Generation | Model Series 405 21 – This printout will not be recorded by the update service. Status: 03 / 2013 –