Volvo D11 series, Installation Manual

Page: 106 / 212

Cooling system
04
Recovery tank correctly connected
Expansion tank, function diagram
Correctly designed system
A Coolant level before start up. Max. filling level with
cold engine.
Coolant level is not to pass below the MIN mark
with cold engine.
Coolant level is not to pass the MAX mark with
warm engine.
B Connection for hose from thermostat housing.
C Low pressure relief valve. See next page.
D Pressure cap 75 kPa ( psi). See chapter
Extra
expansion tank
.
E Expansion volume.
F Deaeration from engine / radiator.
G Connected to the suction side of the seawater /
coolant pump.
• It is advisable not to surpass the in-between level
when engine is cold. This minimizes the "throw
out" if an undesired quick stop occurs.
With a correctly designed cooling system the
pressure cap prevents ventilation. Avoid opening
the pressure cap. If necessary, always open cap
when the engine is cold.
• Connection (B) is to be connected before the ther-
mostat with the hose continuously inclining in or-
der to ensure deairing when filling up coolant after
the system has been drained.
In the case of an existing manual drain cock the
hose is to be connected to the bottom of the tank
and connection (
B) blanked (sealed off).
NOTE! A restriction of 2.5 – 3.0 mm (0.0 – 0.2") is
to be fitted in each deairing hose. Locate the restric-
tion in an inclining part of the hose.
MAX
MIN
C
E
B
•
A
G
D
F
Cold engine:
Min 0 kPa (0 psi)
Warm engine:
Min 30–00 kPa
(5.8–4.5 psi)
Cold engine:
Min 0 kPa
(0 psi)
MAX
MIN
Warm engine:
40–70 kPa
(5.8–0.2 psi)
75 kPa
( psi)
Open
system
C
B
•
E
Drain
cock