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24 votes
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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 ...
Nick C's user avatar
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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 ...
Harper - Reinstate Monica's user avatar
11 votes
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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/...
motosubatsu's user avatar
  • 10.2k
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 ...
Fred Wilson's user avatar
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6 votes
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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 ...
PeteCon's user avatar
  • 8,712
6 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. ...
GdD's user avatar
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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 ...
PeteCon's user avatar
  • 8,712
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 ...
blacksmith37's user avatar
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5 votes
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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 ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
4 votes
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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 ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
4 votes
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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. ...
vini_i's user avatar
  • 16k
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 ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
4 votes
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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 ...
Solar Mike's user avatar
  • 34.6k
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 ...
Captain Kenpachi's user avatar
4 votes
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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....
Pᴀᴜʟsᴛᴇʀ2's user avatar
3 votes

On rebuilding an engine: can anyone define "free spinning the crankshaft"?

This is essentially looking for binding. It has nothing to do with how long it will spin on its own inertia. As you progress thru the assembly, it should turn with little effort to ensure there is no ...
CharlieRB's user avatar
  • 9,015
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 ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
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 ...
Martin's user avatar
  • 8,458
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 ...
Eric Urban's user avatar
  • 1,286
3 votes
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What are the long term consequences of not replacing the worn bearing in my A/C compressor?

Not necessarily specific to your car - If the bearing collapses and the pulley falls off, you will loose all drive to the other ancillaries e.g. alternator, water pump, power steering .... Without ...
HandyHowie's user avatar
  • 25.4k
3 votes
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Is there a hack to repairing a seized engine?

for a little background, I am a Kia master tech. Hyundai and Kia are brother sister companies who share mostly the same drive-train components. both companies have had issues with the 2.0 or 2.4 ...
Max's user avatar
  • 146
2 votes

Back passenger rim heating up after tire change

The most likely thing that will be causing your hot rim is that the brake on that wheel being slightly seized on. The piston in the calliper is probably corroded causing the piston to not retract. ...
HandyHowie's user avatar
  • 25.4k
2 votes

Squeeze some extra life out of radiator and condenser fans

I don't see that there is much you can do about the squeaking. Unless you can crack open the electric motor housing, there isn't much to disassemble to get at the motor bearing. eBay says this is ...
Zaid's user avatar
  • 39.2k
2 votes

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

Sounds like the throwout bearing if you're hearing it mainly when you're operating the clutch pedal. Some vehicles do have an inspection port on the gearboxes bell housing, however in a lot of cases, ...
Aaron Lavers's user avatar
  • 1,596
2 votes

Hub bearing grease: regular or for cv joint?

If the bearing didn't come with grease, or a recommendation for grease, I'd be inclined to use high temperature wheel bearing grease.
PeteCon's user avatar
  • 8,712
2 votes

Back passenger rim heating up after tire change

Assuming the wheel and tyre are the the correct size etc for the vehicle and nothing is rubbing, then the only other thing that could be heating up the wheel are the brakes. Also, sometimes If the ...
Orb's user avatar
  • 5,067
2 votes

Connecting rod bearing

I gave this answer here : Oversize rod bearings question A decent machine shop should machine the crank pins and provide the correct bearings as part of the job.
Solar Mike's user avatar
  • 34.6k
2 votes

On rebuilding an engine: can anyone define "free spinning the crankshaft"?

After a full rebuild, with every part lubed as it should be I would not expect to be able to spin any 4+ cylinder engine over freely by hand. If say you we're turning it at the flywheel, or the ...
Orb's user avatar
  • 5,067
2 votes

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

First of all: I am just an amateur that makes a diagnosis based on a single picture.. Diagnosis: My understand is that a wheel has just some limited excuses for falling of: Someone didn't torqued ...
Martin's user avatar
  • 8,458
2 votes

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

Pretty much the only reason the wheel would fall off is because the wheel nuts weren't torqued. I've never seen one fall off because of a worn wheel bearing. The stud and nut threads can stretch from ...
Ben's user avatar
  • 10.7k

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