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

Chapter 4 N39453
Page 66
How to ll the coolant circuit - 4.4GM, 4.4TGM, 4.4TWGM, 4.4TW2GM.
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” in section 5 for details of the correct coolant to be used in the
circuit.
1. Remove the ller cap (Y1) of the header tank and slowly ll the coolant system until the coolant level is
just below the level of the bafe (Y2).
Note: It is necessary to vent air from the system during initial ll, or if he system has been completely drained.
To vent air, remove the plug (Z1)
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 header tank and add coolant until the level of the coolant is
correct.
5. Fit the ller cap.