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Construction Mechanic Basic Volume 02 - Construction methods and practices | Next
Figure 4-2.—Double-disc clutch, exploded view. |
CHAPTER 4
AUTOMOTIVE CLUTCHES, TRANSMISSIONS, AND
TRANSAXLES
INTRODUCTION
AUTOMOTIVE CLUTCHES
Learning Objective: State the operating principles and
identify the components and the maintenance for a clutch,
a manual transmission, an automatic transmission, and a
transaxle.
Learning Objective: State the operating principles and
identify the components and maintenance requirements
for an automotive clutch.
In a vehicle, the mechanism that transmits the
power developed by the engine to the wheels and/or
tracks and accessory equipment is called the power
train. In a simple application, such as a stationary
engine-powered hoist, a set of gears or a chain and
sprocket could perform this task. However, auto-
motive and construction equipment are not designed
for such simple operating conditions. They are
designed to provide pulling power, to move at high
speeds, to travel in reverse as well as forward, and to
operate on rough terrain as well as smooth roads. To
meet these varying conditions, vehicle power trains
are equipped with a variety of components. This
chapter discusses the basic automotive clutch,
transmissions (manual and automatic), and transaxles
(manual and automatic).
An automotive clutch is used to connect and
disconnect the engine and manual (hand-shifted)
transmission or transaxle. The clutch is located
between the back of the engine and the front of the
transmission.
With a few exceptions, the clutches common to the
Naval Construction Force (NCF) equipment are the
single-, double-, and multiple-disc types. The clutch
that you will encounter the most is the single-disc type,
as shown in figure 4-1. The double-disc clutch (fig. 4-2)
is substantially the same as the single disc, except that
another driven disc and an intermediate driving plate are
added. This clutch is used in heavy-duty vehicles and
construction equipment. The multiple-disc clutch is
used in the automatic transmission and for the steering
clutch used in tracked equipment.
Figure 4-1.—Single-disc clutch.
4-1
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