
COO~ANT
RECOVERY TANK
,..
P~IISS'URE
CAP
Coolant Recovery Tank, Recommended Installation
Coolant from the engine, when heated during engine operation, will expand, lifting the spring-loaded mannold
pressure cap, and enter the coolant recovery tank
by
way of the hose connecting the recovery tank
to
the
exhaust
mannold.
When the engine is shut down and cools, a small check valve in the pressure
cap
is opened
by
the contrac-
tion
of
the engine coolant, allowing some
of
the coolant in the recovery tank
to
be drawn back Into the
engine's cooling system, free
of
air and without loss.
FUNCTION
OF
MANIFOLD
PRESSURE
CAP
COOLANT RETRACTION
to
Coolant Tlnk
COOLANT EXPANSION
Westerbeke Diesel
Engines
44
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