Chevrolet 1963 Corvette, Руководство по ремонту и настройке

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GENERAL INFORMATION AND MAINTENANCE 19
HOW TO SPOT BAD HOSES
Both the upper and lower radiator hoses are called upon to perform difficult jobs in an inhospi-
table environment. They are subject to nearly 18 psi at under hood temperatures often over
280°F., and must circulate nearly 7500 gallons of coolant an hour—3 good reasons to have good
hoses.
A good test for any hose is to feel it for soft or
spongy spots. Frequently these will appear
as swollen areas of the hose. The most likely
cause is oil soaking. This hose could burst at
any time, when hot or under pressure.
Swollen hose
Cracked hoses can usually be seen but feel
the hoses to be sure they have not hardened;
a prime cause of cracking. This hose has
cracked down to the reinforcing cords and
could split at any of the cracks.
Cracked hose
Weakened clamps frequently are the cause of
hose and cooling system failure. The connec-
tion between the pipe and hose has deterio-
rated enough to allow coolant to escape when
the engine is hot.
Frayed hose end (due to weak clamp)
Debris, rust and scale in the cooling system
can cause the inside of a hose to weaken. This
can usually be felt on the outside of the hose
as soft or thinner areas.
Debris In cooling system