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Chapter 4
N37347
Page 22
How to drain the coolant circuit
Warnings!
•
Do not drain the coolant while the engine is still hot and the system is under pressure because dangerous
hot coolant can be discharged.
•
Discard used coolant in a safe place and in accordance with local regulations.
1.
Remove the filler cap of the coolant circuit.
2. Remove the drain plug (C1) from the side of the cylinder block and the drain plug (D1) from the heat
exchanger. Ensure that the drain holes are not restricted.
3.
After the system has been drained, fit the filler cap and the drain plugs.
4. Fasten a label in a suitable place to indicate that the coolant system has been drained.
Caution:
The closed circuit system cannot be drained completely. If the coolant is drained for engine
preservation purposes or for protection from frost, the coolant system must be filled again with an approved
antifreeze mixture. See “Coolant specification” in section 5 for details of the correct coolant to be used in the
circuit.
Engines
fitted with keel coolers
The coolant capacity and the method used to drain the coolant circuit of an engine connected to a keel cooler
will vary in different applications.
Use the instructions given by the keel cooler manufacturer to drain and renew the engine coolant when a keel
cooler is fitted.
Summary of Contents for M92B
Page 1: ...User s Handbook GB Part No N37347 M92B...
Page 2: ......
Page 4: ...Title N37347...
Page 8: ...Contents N37347...
Page 11: ...N37347 Chapter 1 Page 3...
Page 16: ...Chapter 1 N37347 Page 8...
Page 26: ...Chapter 3 N37347 Page 18...
Page 48: ...Chapter 4 N37347 Page 40...
Page 52: ...Chapter 5 N37347 Page 44...
Page 56: ...Chapter 6 N37347 Page 48...
Page 62: ...Chapter 9 N37347 Page 54...