165
MAINTENANCE INSTRUCTIONS
G725 E726 G716
REPLACEMENT OF COOLING FLUID
Follow this procedure:
1. Open the heating circuit cock (A) and
release the overpressure lid on the
expansion tank (B)
2. Drain cooling fluid from the tank (C).
The drain screw is accessible after
removal of the left part of the bonnet.
3. Drain cooling fluid from the block of
the engine (D). The drain cock is ac-
cessible after removal of the right part
of the bonnet.
4. After drainage of cooling fluid close
the screw and cock (let the heating
circuit cock open).
5. Fill the cooling system with an anti-
freezing mixture.
6. Start the engine and let it running for
approx. 1 minute.
7. Refill anti-freezing mixture in the ex-
pansion tank up to the upper gauge
mark MAX.
8. Close the expansion tank by the
overpressure lid.
Replace anti-freezing mixture after two
years at the latest.
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