METAL BODY REPAIR - OD1653 - LESSON 2/TASK 2
LESSON 2
OPERATIONS REQUIRED FOR
GLASS, RADIATOR, AND FUEL TANK REPAIR
TASK 2. Describe the operations required for proper radiator repair.
CONDITIONS
Within a self-study
environment
and
given
the
subcourse
text,
without
assistance.
STANDARDS
Within one hour
REFERENCES
No supplementary references are needed for this task.
1.
Introduction
The radiator of a motor vehicle is an essential element of the cooling
system.
It must function correctly if the engine is to escape serious
damage from overheating.
An engine is cooled by circulating water which-
passes through the cylinder block. It draws out the heat and then releases
it to the air while flowing through the radiator.
Therefore, if this
circulation is hindered or the water leaks from the radiator, immediate
repairs must be made to protect the engine.
Most radiator failures are
caused by vibration, freezing, disintegration, strain, or collision.
In
tubular cores, worn or frozen tubes, broken solder between tubes and header
plates, and cracked header plates are the most frequent causes of trouble.
Honeycomb cores usually leak in the seams at either the soldered offsets or
the header strips. Tank leaks are few, but they may appear at unsoldered
joints, cracked or worn spots, or fittings.
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