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Light and Heavy Vehicle Technology
book

Light and Heavy Vehicle Technology

by M.J. Nunney
March 2016
Intermediate to advanced content levelIntermediate to advanced
514 pages
33h 25m
English
Newnes
Content preview from Light and Heavy Vehicle Technology
HYDRAULIC BRAKE SYSTEMS
437
exposed
to
the atmosphere there is
a
reduced risk of
damage by the ingress
of
foreign matter.
3
A
simpler valve arrangement may be used requiring
only one port each
for
the vacuum and atmospheric
connections.
A fail-safe feature common
to all
types
of
vacuum
servo-operated braking systems
is
that,
in
the event of
failure
of
the vacuum source,
the
hydraulic circuit(s)
remain unaffected although, of course, the driver pedal
effort must
be
increased.
Operation of vacuum suspended servo unit
Referring first to the general arrangement drawing that
names
the
parts
of a
typical direct-acting servo unit
(Figure 25.48)
an ...
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Publisher Resources

ISBN: 9781483105062