
112 LIGHT AND HEAVY VEHICLE TECHNOLOGY
itself.
To isolate the source of leakage generally re-
quires the application of a proprietary pressure cap and
cooling system tester, which combines a pump and
gauge together with suitable adaptors for attachment to
the pressure cap and the filler neck of the radiator.
Thermostatic control of the water-cooling system
It is worth reflecting that the function of the cooling
system is not so much to keep the engine cool, but to
prevent it from overheating. In this respect the intro-
duction of a thermostatically regulated cooling system
by the Cadillac Motor-Car Company of America for
their 1914 V eight-cylinde ...