Perkins 415GM - How to Fill the Coolant Circuit - 4.4 GM Rad, 4.4 TGM Rad, 4.4 TWGM Rad & 4.4 TW2 GM Rad

N39453 Chapter 4
Page 67
How to ll the coolant circuit - 4.4GM rad, 4.4TGM rad, 4.4TWGM rad & 4.4TW2GM
rad.
Warning! If coolant is to be added to the circuit during service, allow the engine to cool before the coolant is
added. Remove the ller cap slowly as dangerous coolant could be discharged if the coolant is still hot and the
system is under pressure. Do not put too much coolant in the coolant circuit. There is a relief valve in the ller
cap which will open and release hot coolant if too much coolant is added.
Caution: If coolant is added to the circuit during service, it must consist of the same original mixture as used
to ll the system. See “Coolant specication” for details of the correct coolant to be used in the circuit.
1. Remove the ller cap (AA1) of the radiator and slowly ll the coolant system until the coolant level is just
below the level of the ller neck (AA2).
2. Fit the ller cap.
3. Start the engine. When it has reached its normal temperature of operation, stop it.
4. Carefully remove the ller cap of the radiator and add coolant until the level of the coolant is correct.
5. Fit the ller cap.