Cooling system
05
Recovery tank incorrectly connected.
Unacceptable system, fatal to the engine
IMPORTANT!
• If there is too little expansion volume (E) an un-
derpressure will be created when charged after
an idling period, thus causing cavitation of the
jacket pump.
• During idling the thermostats close, the coolant is
cooled off and contracting. The pressure cap has
a low pressure relief valve (
C) which opens up
around –5 kPa (–2.2 psi). It is not healthy for a
jacket pump to operate with an inlet pressure of 0
kPa (0 psi) and below, since cavitation is likely to
occur.
75 kPa
( psi)
0–75 kPa
(0– psi)
–5 –> 70 kPa
(–2.2 –> 0.2 psi)
E
B
C
•
Summary of Contents for D11 series
Page 1: ...Marine Propulsion Diesel Engines Installation 1 1 D E D5 D16 series ...
Page 2: ......
Page 208: ...206 References to Service Bulletins Group No Date Concerns ...
Page 209: ...207 Notes ...
Page 210: ...208 Notes ...
Page 212: ...7748655 English 11 2007 ...