hatRunner

Can the grease packed around the bearings in the hub leak into the CV boot and subsequently out a crack in the CV boot?


I have a 4WD 4Runner this issue is on the front right. I'm hearing a mild grinding from up there while driving at various speeds. Not sure if its CV or Bearing. The CV boot has been broken for about 500 miles.


Thanks
Gary

xxxtreme22r

no, but there is grease in the cv boot. to begin with.

does it sound like this:

http://www.youtube.com/watch?v=ZlCTjm620GY

http://www.youtube.com/watch?v=yIVNWWWmEYA

MudHippy

Could be the CV outer gone dry, or the inner spindle bearings/bushing. If there's grease coming out of the spindle then you need to replace the rear spindle seal and the seal on the end of the CV halfshaft that mates with it. And check the wheel bearings for lack of lubrication.

hatRunner

Very similar not as loud as in those videos though. Its more subtle.

I wanted to make sure that the two (spindle/CV) were supposed to be separate.

Gary

xxxtreme22r

check for rocks etc between the brake rotor and dust shield.

hatRunner

No Rocks checked that already. This grinding causes a noticeable vibration in the floor boards but not in the steering.

TNRabbit

They are separate.

However, by continuing to drive an open CV boot for 500 miles, you're effectively grinding it into replacement. They really are VERY resilient & last for years if kept greased & dry.

xxxtreme22r

mine have been busted for almost 2 years now. Having manual hubs have probably helped my case though. Lets see if mine makes it one more winter. lol.

hatRunner

Needs to be fixed just doing my homework so the repair guy is less likely to screw me...

TNRabbit

The parts are MINIMAL; it's the labor that will rape you~

limon32

Do it yourself, its a 3 hour job for the first time with help from this site. I just did mine and I would NEVER pay to have this done, too easy.

Murakami

i think i'm having the same issue. i hear some grinding faintly when driving in 1st at about 10mph, but more so I can feel the vibration in the floor board with the heel of my foot. Not the CV because i have manual hubs and they aren't turning. just waiting to get out to my garage so i can lift the wheel off the ground and check the bearings. Let me know what you find out.

limon32

If your hubs are not turned in and your still vibrating it sounds like wheel bearings. Get a big hammer and a brass drift, oh and the 54mm socket and get er done, no too tuff.

87 'runner boosted

same issue here guys...noticeable vibration (pretty bad) from 40-55mph, vibration disipates after 55 mph but you can still here the noise. hoping to check it out thanksgiving weekend, gonna have some time to tear her down. lookin like wheel bearings and cv's maybe. how much slack should i feel in my cv joints by the way?? are they kinda like u-joints and shouldnt have any?

A_Shifter

2nd gen in the air getting brakes all the way around & realize I should do axles while I'm in here (210,000 miles & shredded boots). Search brings me to this thread https://www.yotatech.com/forums/f116...-w-pix-144314/ but pics are no longer visible (at least, on my machine)...Sounds like illustrations could save me lots of time & aggravation. Anybody kind enough to point me in the direction of a current thread?

limon32

I don't have a current thread or pictures, but its so easy you don't need them. The key to easy axle replacement is alignment. Take the tire off the side your working on ONLY. Set that side down on a jackstand that is set lower than the other tires, so that corner is the lowest point on the truck, make sense? Then put a floor jack under you lower ball joint on the side with no tire and start jacking until your axle is parrallel with the floor. Once that is achieved, complete removal of the hub, axle nut/washer and snap ring. Take off the diff side axle nuts and it will slip toward the hub side, you will need to spin the axle and diff output until they slip by, it WILL fit by you just have to turn it just right and talk to it nicely! Once that side is done put it all back together, put the tire back on and go repeat on the other side.

A_Shifter

Hey, thanks for the reply, limon32.
My hubs are disassembled while the rotors are being machined, so I'm going to screw with it tomorrow morning & see if I can mess with jacks/stands/bite my tongue just right & drag 'em out that way. If I'm successful, I'll post results. If not, I'll wait for rotors, reassemble and do it this way.