Z001019/0_6_July 2008 Page COOLING SYSTEM - 21
SERVICE MANUAL MARINE ENGINES
05 COOLING SYSTEM
05.01.03 Checks
Check exhaust duct for cracks. Check raw water
circuit of the heat exchanger in a pressure test with
closed outlet nipple. Pressurize inlet nipple with a
pressure gauge and immerse manifold into water. At
a pressure of 22-25 kPa, the manifold should show
no leaks.
ATTENTION:Mostly, structural cracks are highly
dependent on thermal influence. In
order to achieve a more reliable result
of the pressure test, the component
should be heated up to approx. 80°C.
ToC
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