4/2/09

Beware of the Used Cars Owner Bearing Offers!

Hence, it is equally important to know the basic factors that need to be considered before the buyer decides on a particular used car, especially if the car will be bought directly from the owner.

Here are some tips that might help those who are planning to buy a used car from its owner.
1. When buying cars from the owner, the buyer should ask the seller for the “vehicle registration document” or the so-called V5. Through this document, the buyer will be able to know the full details of the car’s ownership like the name of the owner, the address, and other identity details.
2. If in case the V5 is with the Driver and Vehicle Licensing Agency or the DVLA, as told by the owner, the buyer should verify the reason. If it is due to recording purposes where the change of ownership shall be recorded, the seller should have a green slip that is to be presented to the buyer in exchange of the V5.
3. It is best for the buyer to ask the seller to see the insurance policy for the vehicle. If the seller cannot produce the document, it would be better not to buy the used car because there is a high probability that he is not the real owner or that there is something fraudulent with the transaction.
4. It is important to check if the identification details stipulated in the V5 is the same as that written in the driver’s license. The address and the name should be the same on the two most important documents. Other wise, it would be better not to pursue on buying the car if there is doubt on the details.

These things should never be taken for granted because if any of the conditions mentioned is present, there is a great chance that the car is stolen. Therefore, it’s better not to take any risk.
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Important Facts on a Mazda Wheel Bearing

The wheels on one’s Mazda car rotate smoothly, quietly, and with minimal friction due to the fact that they are supported by precision-built ball or roller bearings. In general, the type of bearings used in a number of cars and trucks depends entirely on the specific wheel design, but all have four qualities in common. For one, a high radial loading capacity is a given. That is, the ability to carry both the car and its load without risk of failure. Another is a high thrust load capacity which is necessary as the car turns corners. Quite another is the shock resistance — the kind of shock caused by tires hitting holes in the road, curbs, and other objects. There is also the fact that wheel bearings must have the ability to maintain wheel alignment-this one is an absolute necessity for proper steering and braking action.

These thus make up the many roles that a wheel bearing must see to. That said, one no longer has to give oneself a rub in the head whenever the subject of a wheel bearing springs, especially if it has something to do with one’s Mazda Wheel bearing. Since the wheel bearing is exposed to constant friction, proper cleaning adjustments and lubrication of the said wheel bearing at regular intervals are recommended. This will ensure that the wheel bearings will last as long as the car.

One way to see that this happens is to pay attention. Wheel bearing noises are a major indication that the system is suffering from a number of glitches. It can mean anything from a loose or damaged wheel bearing to an entirely defective bearing model. These flaws can cause a variety of sounds and it is often difficult to find the exact locations where the bearing is faulty. A way to deal with such troubles is to strip the wheel down and wash the wheel bearings. Examine the parts. Rotate slowly and look for wear, flaking, cracks, brinelling, corrosion, or chipping. Such defects are caused by dirt, moisture, improper adjustment, overloading, and in some cases, lack of sufficient lubrication.

On roller bearings, look particularly for chipping on the edges of each roller. While the roller surface may appear to be good, its edges may have become broken from over-tightening. Check both cups and cones, look for defects including actual hairline cracks. Check the color of bearing rubbing surfaces. Those that have been overheated will be blue or blue brown. This indicates that bearing hardness and life expectancy have been reduced and that the bearing should already be replaced. If bearing smoothness is to be tested by pressing the parts together and rotating them, be sure to apply a small amount of light engine oil first to the balls or rollers.When one part of a bearing assembly is unsuitable for further use, the entire assembly should be replaced. Both inner and outer bearings should be replaced at the same time and new races must be pressed into the hub. If the defective bearing only is replaced, it is quite likely that the piece that was left unreplaced will soon fail, requiring one to strip the wheel down again. Replacing both bearings and their races at the same time equalizes the load on them and reduces the possibility of early failure. Not to mention the fact that it saves tremendous time and energy in the process.
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Powerful Clutch With a Pontiac Release Bearing

The clutch is an important component that allows the engine power to be applied slowly when your vehicle is starting out and interrupts this power in order to avoid gear crunching when shifting. What happens when you apply the clutch is a transfer of power from the engine to the transmission and drive wheels. This power transfer is stopped when the clutch is disengaged and the engine is allowed to continue turning without force to the drive wheels. There are several components that work together so that the clutch can effectively function such as the clutch disk, flywheel, pressure plate, throw-out bearing or release bearing, and the linkage.

The Pontiac Release Bearing is a ball bearing and collar assembly. Also called a throw-out bearing or a clutch release bearing, like any typical bearing, it reduces the friction between the pressure plate levers and the release fork. It is a sealed unit pack with a lubricant and located between the clutch fork and the pressure plate fingers. From a hub sleeve extending out front of the manual transmission or transaxle it slides out. The release bearing snaps over at the end of the clutch fork and small spring clips hold the bearing onto the fork. The Pontiac Release Bearing then slides along the transmission hub sleeve if there is any fork movement in either direction. The bearing is not designed for continuous use and only operates when the clutch pedal is depressed. When the driver steps on the clutch pedal, the release bearing then applies force to the spinning pressure plate fingers to release the clutch. When the clutch pedal is pressed, a cable or hydraulic piston pushes on the release fork, which presses the release bearing against the middle of the diaphragm spring. And as the middle of the diaphragm spring is pressured in, a series of pins near the outside of the spring causes the spring to pull the pressure plate away from the clutch disc which releases the clutch from the spinning engine. The amount of force the clutch can hold depends on the friction between the clutch plate and the flywheel, and how much force the spring puts on the pressure plate. When the clutch pedal is released the release bearing does not have any contact with the pressure plate fingers and remains still and at rest.

The clutch on a manual transmission usually lasts for several years but then you also have to consider the personal driving habits as well as the usual driving area which can add to the general wear of your clutch. The one dramatic symptom of a clutch problem is poor gas mileage as well as a revving engine sound when you accelerate. Although the release bearing does not require routine maintenance but it should be replaced when there is a need to replace the clutch. A whirring or growling sound when the applying the clutch pedal which also goes away as soon as the pedal is released is one of the symptoms of a worn out Pontiac Release Bearing. When there is insufficient clutch play the release bearing is continuously spinning which causes its premature wear. And if the bearing fails, it may grab and quickly wear the pressure plate fingers.

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