SERVICING THE LIQUID-COOLED
system is extremely important to the performance and service life of the engine. Major
engine damage could occur in a matter of minutes without proper cooling because combustion
heat collects in metal engine parts. This heat can melt pistons, crack or warp the
cylinder head or block, cause valves to burn, or the head gasket to "blow." To
prevent these costly problems, keep the cooling system in good condition.
As a mechanic,
you must be able to locate and correct cooling system problems quickly and accurately. It
is equally important that you know how to service a cooling system.