Perkins 35943 - How to Drain the Raw Water System

35943 Chapter 4
Page 17
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” in section 5 for details of the correct coolant to be used. See section 7
for details of how to add coolant to the raw water system for engine preservation purposes.
1. Ensure that the seacock is closed.
2. Loosen the six setscrews (A1) of the cover for the raw water pump.
3. Rotate the crankshaft to ensure that the raw water pump is empty.
4. Tighten the six setscrews of the cover for the raw water pump.
Caution: When the raw water system is to be used again, ensure that the seacock is open.