Perkins 415GM - How to Drain the Coolant Circuit - 4.4 GM & 4.4 TGM Rad

N39453 Chapter 4
Page 71
How to drain the coolant circuit - 4.4GM & 4.4TGM rad.
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 ller cap on top of the radiator (KK1).
2. Remove the drain plugs (LL1) from the side of the cylinder block and the manifold.
3. Remove the drain plug (MM1) from the bottom of the radiator.
4. After the system has been drained, t the ller cap and the drain plugs.
5. Fasten a label in a suitable place to indicate that the cooling 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 cooling system must be lled again with an approved
antifreeze mixture. See “Coolant specication” for details of the correct coolant to be used in the circuit.