Thursday, September 15, 2011

Ball joints, tie rods, struts and bearings in plain english?

I went to get my oil changed and the mechanic showed me my front wheel basically shakes and he said it could fall off. I need to know what these parts do and what the mechanic means. This is what he said I need : LF lower ball joint, RF inner tie rod, 2 front struts blown out, 2 rear struts blown out, RR wheel bearing very loose, 1 alignment, 2 belts.
Ball joints, tie rods, struts and bearings in plain english?
The ball joints and tie rods are the connections that control the wheels when turning. They work together. If you think of them as your arm, the ball joint would be your elbow, the tie rod would be your forearm, and the wheel bearing would be your wrist.

Struts are the shock absorbers. If those have failed, everything else mentioned here would eventually shake loose. I suspect this is where the trouble started. Without any suspension, you should have noticed a really rough ride.

The alignment is obvious, given all the other problems, and the belt replacement is a normal recommendation.

Get a second opinion before you do anything though. These are tough times, and some people will do desperate things to make a buck. Make sure the diagnosis is accurate.
Ball joints, tie rods, struts and bearings in plain english?
the balljoints hold the spindle (part that holds the wheel to the suspension) onto the suspension arms allowing them to move and turn. The tie rod is a joint in the steering that allows the spindle to turn on the balljoints when the steering gear moves. The struts are like shock absorbers, blownout meaning they have lost the oil charge that makes them work. the wheel bearing allows the wheel to rotate freely on the spindle, and is an important part of holding the wheel on the car. Alignment sets all of your wheels to run in the same exact direction to maximize gas mileage, make ithe car drive straight, and prevent bad tire wear. And the belts operate the water pump, alternator, power steering and air conditioning. The worn parts in the suspension can come apart, causing loss or control (imagine the tire coming up into the wheelwell far enough that the bottom of the car hits the road) the tir rod can cause you to not be able to steer, or to roll the car if it breaks, the wheel bearing could seperate (car loses a wheel) or lock up (one wheel stops moving) causing a wreck. And the belts breaking could cause overheating, loss of power steering, loss of ac, or loss if the alternator (no battery charging ability)
Well, I'll start with a general assessment...it sounds like maybe the struts went out on your car and then the excessive vibrations from that caused further damage over time. At the same time, that is a lot of expensive stuff which always makes me want to check it out myself when an oil change guy says it. My advice...and I highly recommend this...is to go to a different shop (maybe ask around and see if you can get a recommendation for someplace that is honest) and get a 2nd opinion. Important: don't tell them that another mechanic looked at it...just say that it's seemed to drive strange lately and you want to make sure everything is %26quot;safe%26quot;. Then if/when they say something is wrong, compare to what the other shop said.



Now on to the explanation of the parts mentioned. Most of it is all steering and suspension stuff. Ball joints are what attach the tire(and attached wheel and hub assembly) to the rest of your car while allowing the tire to move back and forth for steering. It is somewhat common for them to go bad after 100,000-200,000 miles depending on the car and how it's treated as they get alot of wear and tear. The tie rod end is another joint that connects the steering components to the tire (tire's hub actually) for steering. Again, they get alot of wear and tear over time and eventually have to be replaced. Struts are similar to %26quot;shocks%26quot;, basically their job is to absorb the bumps in the road to lessen their impact on your car and ultimately you sitting in the car. The wheel bearing is a little ring of rollers packed in grease that allows the wheel to turn freely. If the bearing goes bad or is not installed properly, it will eventually destroy your hub and the wheel can come off. Alignment is just the procedure of lining up the wheels properly so the car drives straight on the road. An alignment procedure is necessary whenever steering components like the ball joint or tie rod end are replaced. By %26quot;belts%26quot; I assume he meant the belts that tie all the engine components together. Hard to say without specifying which belts.
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