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Home > Ordnance Documents and other related manuals > > Lesson 3: Fundamentals Of Suspension Systems
Lesson 2: Answers to Practice Exercise
Frame Construction

Wheeled Vehicle Drive Lines, Axles And Suspension Systems
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Lesson 3/Learning Event 1
LESSON 3
FUNDAMENTALS OF SUSPENSION SYSTEMS
TASK
Describe the fundamentals of suspension systems.
CONDITIONS
Given information about the construction, operation, and maintenance of springs, shock
absorbers, frames, bogie suspension systems, tires, and wheels.
STANDARDS
Answer 70 percent of the multiple-choice test items covering fundamentals of suspension
systems.
REFERENCES
TM 9-8000
Learning Event 1:
DESCRIBE THE TYPES, CONSTRUCTION, AND OPERATION OF FRAMES,
SPRINGS, AND SOCK ABSORBERS
The purpose of the vehicle suspension system is to support the weight of the vehicle. A
perfect suspension system would give a smooth ride on rough roads while keeping the
wheels pressed firmly to the ground for traction. It would allow the vehicle to carry
small loads or very large loads without changing any of its other good features.
Unfortunately, it is not practical to build all vehicles with "perfect" suspension. Instead,
in each type of vehicle, the suspension system is built for a particular type of job.
Because most military vehicles must travel over rough roads and carry heavy loads, their
suspension systems are very strong and stiff.  However, some vehicles used by the
military have a more flexible suspension system. As a wheeled vehicle mechanic, you
must have knowledge of both types.  This lesson will cover suspension system
components, to include frames, springs, bogie suspension systems, shock absorbers,
wheels, and tires.
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