Draining The Closed Cooling System; 5.7 Liter Engines (F-Series) - Volvo 5.0OSiE-J Operator's Manual

Maintenance
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4. Crank the engine briefly, (1 or 2 crankshaft revo-
lutions) but do not start the engine, to clear the
water from the pump.
NOTICE! It may be necessary to turn the ignition key
back to the OFF position 0 to prevent the
engine from starting.
5. Loosen clamp (C) and remove hose (D) from fuel
pump. Allow water to drain from hose.
6. Reinstall all hoses and secure all clamps in the
same orientation as removed.
NOTICE! Failure to connect the raw water pump hos-
es in the correct orientation may damage
the raw water pump impeller.

Draining the Closed Cooling System

5.0–5.7 Liter Engines (F-Series)
NOTICE! Check the coolant level and antifreeze con-
centration (check coolant manufacturer's in-
structions). Make sure the coolant's freeze
point is adequate for expected tempera-
tures. Failure to maintain adequate anti-
freeze may result in engine damage during
freezing temperatures.
To drain the raw water system of your Volvo Penta en-
gine (with factory installed closed cooling):
1. With the engine turned off locate and loosen the
lower drain cap from the heat exchanger (1).
After water has completely drained, retighten the
lower drain cap of the heat exchanger to
18-30 ft. lb. (25-41 Nm).
2. Note the hose orientation on the raw water pump
(G). Loosen the hose clamps (2) and remove the
hoses (E & H) from the raw water pump. Crank
the engine briefly, (1 or 2 crankshaft revolutions)
but do not start the engine, to clear the water from
the pump. Reinstall the hoses and secure the
clamps in the same orientation as removed.
3. Remove drain plugs from exhaust manifolds.
Change the level of the boat to ensure complete
drainage. Probe the drains with a wire to ensure
rust particles have not blocked the drain. After
water is completely drained, reinstall drain plugs
and tighten securely.
VPA 7748131 English 09-2007