Perkins 415GM - How to Drain the Raw Water System

N39453 Chapter 4
Page 49
How to drain the raw water system
Caution: The raw water system cannot be drained completely. If the system is drained for engine preservation
purposes or for protection from frost, the system must be lled again with an approved coolant mixture. See
“Coolant specication” for details of the correct coolant to be used.
1. Ensure that the seacock is closed.
2. Remove the drain plug on the 415GM and 422GM (F1) or 422TGM (G1) from the raw water cooler.
3. After the system has been drained, ret the drain plug.
Caution: When the raw water system is to be used again, ensure that the seacock is open.