Maintenance and care
112
If it is necessary to fill the expansion tank when the engine is hot, the following should be noted:
D In order to be able to operate the hot engine
again without an alarm, after opening the lock
ing cap, there must be an admission pressure
of 0.7 bar in the cooling system.
D In order to achieve this a pressure valve (1) is
fitted on the expansion tank, to which a propri
etary air pump can be connected. This can be
used to pump the system pressure up to
0.7 bar
1
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