Hot answers tagged

24 votes
Accepted

Why do mechanics give the wheels a spin after raising a car for inspection?

Probably a combination of things - as you surmise, it's a good way to check for worn bearings (you may also spot them rocking the wheel up and down or side to side, that's also checking the wheel ...
  • 28.6k
12 votes
Accepted

How can you change a pressed wheel bearing without a hydraulic press?

There are tools available that can do the job without using a press: There are many more. The overall theme is the C-clamp like stile of pressing the bearing in and out. There is an old saying, ...
  • 15.9k
12 votes

Why do mechanics give the wheels a spin after raising a car for inspection?

What exactly are they looking for? Anything that could be wrong or irregular. Tire defects Bent wheel rims Worn bearings noisy anything dragging brakes health of differential gears condition of CV ...
11 votes
Accepted

Is it worth replacing the entire clutch assembly when the clutch release bearing fails?

At ~110k on the clock it's quite likely that it's the original clutch, and if so you're going to be significantly closer to the end of the clutch's life than the start. Given the big labor cost/...
  • 9,787
9 votes

bearing noise soon after tire replacement?

It might not be the tires so much as the alignment. If the bearing was worn but had "gotten settled" in a particular orientation, it might not have been noisy. Then you changed the alignment and ...
  • 2,301
7 votes
Accepted

What are crankshaft bearings and how are they different from camshaft end bearings?

The two primary bearing types found on a crankshaft are roller bearings and plain bearings located on the main journals of a crankshaft. There are two types of journals on a crankshaft. Main Journal ...
  • 32.8k
6 votes

Pranged bearing bracket on main driveshaft: can I drive the car?

My options would be to replace the shaft were it sits now. No fun as a "flat back" job but it is not very hard. Or tow it to a repair site. It does not look like it should be driven. A driveshaft that ...
  • 11.5k
6 votes
Accepted

Pranged bearing bracket on main driveshaft: can I drive the car?

I don't think it's safe/wise to drive 80 miles on that. It needs to be put on a trailer and dragged home at son's expense (some insurances cover towing also, but 80 miles is a bit far. If you have a ...
  • 8,602
6 votes
Accepted

bearing noise soon after tire replacement?

I've had this issue with cars fixed at my past shops. The old tires would mask the sound of the wheel bearing starting to go bad. New tires would suddenly make the sound stand out. Old tires can also ...
  • 3,363
5 votes

bearing noise soon after tire replacement?

This is a bit of a difficult question to answer over the internet because none of us can physically be there to observe the symptoms you're describing. However though, cars are just like any other man ...
  • 3,333
5 votes
Accepted

How can I tell which hub bearing is making a noise?

Since when a wheel bearing goes bad you can feel it more than you can hear it, and there usually isn't any deflection in the wheel itself until the bearing is pretty much shot, the way I usually check ...
5 votes

Could one smaller tire on back be the cause for the rear wheel bearing to go out on a subaru outback?

One tire with a months usage more than the other three will not be a cause of any issues. If you have a tire that is substantially different in circumference to the others, that's bad (which is why ...
  • 8,602
5 votes

What can cause a wheel to fall off/hub to break?

It was untightened lug nuts, period .Unfortunately , I have done that. Miraculously , I can tell about it. Just as your photo ; all my nuts were missing, 2 studs had broken by fatigue. I had a Nissan ...
  • 3,660
5 votes
Accepted

Disintegrated differential bearing: can it be blamed for pinion clanking over the ring gear?

In a word: Absolutely. The bearing you are pointing out is the carrier bearing for the differential, which keeps lateral movement (forward/aft) of the ring gear to a minimum (if not non-existent). If ...
5 votes

Remove and replace a wheel bearings without puller or press?

I've replaced bearings without either a puller or a press, it's perfectly doable, although a bearing insertion set does make things much easier. These are cheap and you can get them off the internet. ...
  • 15.1k
4 votes

Can shaft journals ever lose lubing against bearings?

Just like any other bearing in any automotive engine, it needs a constant source of oil in order to keep spinning. It does this by utilizing oil galleries which are drilled throughout the block. These ...
4 votes
Accepted

Throw out bearing, input shaft bearing, or drive shaft support bearing?

Throw out bearings (TOB) usually make noise when only when you press the clutch pedal. The reason for this is, it is the only time it is engaged and actually can make a noise. If you are hearing this ...
4 votes

Driving on bad wheel bearing 04 F-150

I agree this sounds more like a brake pad issue than a wheel bearing issue. The main reason is, with a wheel bearing issue, you will feel it more than you'll hear it. When the wheel bearing is bad ...
4 votes
Accepted

Why do some axle repair bearings have two seals?

Axle repair bearings are used when the surface of the axle is chewed up by the old bearing. The repair bearing moves the location of where the bearing rollers ride to a smooth location on the axle. ...
  • 15.9k
4 votes
Accepted

Oversize rod bearings question

You take the nominal diameter of the existing bearing and using the result of the plastigauge add / subtract to get to the diameter you need, then that gives you the amount of over or undersize ...
  • 34.4k
4 votes

Oversize rod bearings question

Realistically, if your rod journals are worn, you'll need to take it to the machine shop to have the crankshaft inspected and reground if it can be done. The machinist (or shop) will then figure out ...
4 votes

Is there a hack to repairing a seized engine?

It will almost definitely be cheaper to buy a reconditioned engine and drop that in than trying to sort out a seized engine. This is because you're going to have to pay for a lot of machining work in ...
4 votes
Accepted

Dust caps for idler pulley bearing?

The "cardboard thing" is just there to keep the bolt in place while in packaging. Discard it as it's not needed. Leave the cap off during installation, then place after everything's together....
3 votes

Back passenger rim heating up after tire change

During the tire change, the mechanic deployed your emergency brake. If you do not use it frequently, the mechanisms which actuate may have rust and corrosion on them. Even if the parking brake lever ...
  • 1,286
3 votes

Squeeze some extra life out of radiator and condenser fans

I would not try to grease the bearings. Normally a bearing this size is sealed by either a rubber ring (designation suffix 2RS) or a steel sheet ring (designation suffix 2Z), so just slopping some ...
  • 7,978
3 votes

Driving on bad wheel bearing 04 F-150

Sounds more like brake pads are worn out. But with the possible safety issues I would agree with the other answer or comment that this should be looked at by someone knowledgeable ASAP.
3 votes
Accepted

Is DIY bearing and hub for 4wd ok

Several suppliers sell a hub and bearing assembly. While more expensive it makes replacement a one trip job. There is no need to bring the assembly to a shop to have the hub removed and installed from ...
  • 19.8k
3 votes

Is DIY bearing and hub for 4wd ok

It is definitely not the same between a 4x4 and a 4x2 vehicle. The major difference between the two is that in a 4x4 application, there is the drive shaft which runs through the middle of the hub. You ...
3 votes
Accepted

Can shaft journals ever lose lubing against bearings?

Journal bearings have a small hole to constantly supply oil for lubrication. They do not rely on oil coming from the surrounding vicinity. That said, it is possible to run the bearing dry if there is ...
  • 39k
3 votes

Need to change Rod bearings...any tips?

This is just me being anal, but you'd actually be getting undersized bearings not oversized. You really needed to have pulled the engine, checked the crankshaft journals out in order to see if you ...

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