Damage at the cross joint

The car is rear-wheel drive system of frequently experienced problems on propeller shaft or more popularly referred to as coupling. If this part is damaged, then the car will experience excessive vibration felt in the passenger space when run on top of 60km/jam. And symptoms that will be increasingly harder as the speed of the car plus.

If you feel such symptoms, it's a sign there is a defect in the joint cross section as contained in the coupling. The fix would be so easy, just replace the cross joint. Only problem, often cross the new joint can no longer mounted on the yoke precisely because it has happened mounting holes wear and tear on his cross joint. Thus, despite having replaced new, the vibration was still stubborn.

Therefore, if the mounting holes in the cross joint that is worn, before mounting it's good plastic glue applied first encountered stout steel at the hardware store. The trick, first clean the hole, - as well as cross joint to terbebes of fat or oil. You can do this by using a cloth that has been moistened with petrol. After that, the new plastic smeared steel adonanya has been prepared, and immediately followed by the installation of a new joint cross. You do not need to wait until the pasta is dry plastic steel, as it will only bother the installation technique.

Once installed neatly, you'll want to put plastic steel that in some corners in order to

outside the home a cross joint yoke firmly attached to his house. Thus, cross joints can work as normal when the coupling is moved in four directions.

Good luck

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Muffler

BEHAVIOR

Cuts the noise coming from car and truck engines. Unless, of course,

some young driver cuts holes in it.

HABITAT

The muffler lives at the end of the combustion process, beneath the

back end of the car.

HOW IT WORKS

Exhaust gases are piped into the muffler at elevated pressures and then pass out the tailpipe. The escape of high pressure exhausting into the atmosphere generates noise.

Noise is suppressed inside the muffler by destructive interference. Sound energy reflects off the inside of the muffler and tends to cancel itself out. This is the principle of noise-canceling headphones: two identical sound waves that are exactly out of phase with each other can cancel each other.

Exhaust gases enter the muffler’s first chamber where they escape into a resonating chamber. The resonator is designed to reflect sound waves back at incoming waves so the two waves interfere with each other.

Exhaust and sound escape to a second chamber for further dampening.

The exhaust has to flow through small holes in the pipes inside the muffler, thus reducing the noise further.

The body of the muffler is a sandwich of metal with a layer of insulating material between them. This helps noise reduction by absorbing sound.

A different design for a muffler is the straight-through or glass pack muffler. Combustion gases enter through a perforated pipe inside the muffler. The gases escape through the perforations into a chamber filled with sound-absorbing material (fiberglass, for example) and then out the tailpipe. The straight-through design reduces back pressure, making the engine more efficient.

The design of mufflers is a balance between suppressing noise and reducing power output by the engine. Like sticking a banana up the tailpipe, a muffler creates back pressure, which retards exhaust gases

and decreases engine output. Too much exhaust restriction in the muffler will cause noticeable reduction in power.

INTERESTING FACTS

The silencer or muffler was invented by Hiram Percy Maxim. He used the same technology to invent the silencer for firearms. His father, Sir Hiram Stevens Maxim, was a more famous inventor. He invented the

machine gun and the modern spring mouse trap, and had pre-Wright Brothers success getting a steam-powered airplane to take off.

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Library of Congress Cataloging-in-Publication Data

Sobey, Edwin J. C., 1948–

A field guide to automotive technology / Ed Sobey.

Published by Chicago Review Press, Incorporated

814 North Franklin Street

Chicago, Illinois 60610

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