howling

[TC4x4]

When i drive and use the gas and some times coasting i hear a howling or a whooing higher pitched sound coming from whay sounds like my rear driver side tire area, what would be causing this, if you have any ideas let me know>? thanks guys

corey

 

[Elevator Man]

sounds like pi nion bearing or carrier bearings to me.

 

[TC4x4]

Whats that and wheres that? And is it hard to replace and fix. thanks

 

[Elevator Man]

in the rear end i'de check and see if it had any oil in it

 

[TC4x4]

its the only fluid that i have not checked yet.

 

[TC4x4]

where in the rear end, and is there some kind of bearings at the ends of the axles by the wheels bec i swear it sounds like it is one the drivers side but im not sure???

 

[TC4x4]

ttt

 

[noJeepshere]

the fill plug on the diff should be on the pass side of the housing, it should be a 1/2in socket fitting. pressure wash away and youll find it

about the grinding, my guess is the wheel bearings in the rear axle.

 

[TC4x4]

haha, i was not talking about the fill plug when I said "where" i was asking where the bearings are located in the rear end, and is there more than one bearing? but i like how you referenced the power washer. lol that was a good one.

 

[TC4x4]

is the wheel bearing a easy fix and can i do that myslef with not many tools because I am away from my home at the time so i do not have the luxery of a tool filled garage.

 

[noJeepshere]

all youd really need is a crowbar to pull the old bearing out and a heavy rubber mallet to put the new one in. thats how i replaced my wheel bearings. youll also have to pull the diff cover off to get at the c-clips that hold the axleshaft in place. its really a pain in the butt.

btw, nice sig line

 

[noJeepshere]

haha, i was not talking about the fill plug when I said "where" i was asking where the bearings are located in the rear end, and is there more than one bearing? but i like how you referenced the power washer. lol that was a good one.

oh... i see, the bearing are at the hub, one per side

 

[TC4x4]

There are bearings at the hub right bec the howling seems to becoming from the side.

 

[noJeepshere]

yup, right behind the wheel studs. the way it was designed you have to pull the diff cover off and pull the spider gear pinion and have a buddy push on the shaft and you pull the c-clip off, then itll all slide out. i did this fix somewhere in alaska on my friends s10 blazer near sunset. a moose investigated the whole process for a while. good times.

 

[TC4x4]

How can i tell if it is the bearing in the differential(carrier bearing i think its called) of tell if its a wheel bearing? And to change the "wheel bearing" I have to remove the spider and pinion gears, i was a tad confused?

 

[noJeepshere]

the axle is a semi-floating design and there is a little c-clip in the diff that holds the axle on. i wish i had pics to show you but i dont. some axles, like those found on jeeps, have a way to mount the axle to the outer hub, but not gm. heres a quick sketch to show what im saying. hope it helps

 

[TC4x4]

how can i tell which bearing is the one thats gone bad if there is one if the diff and one behaind the rotor?

 

[noJeepshere]

not sure... anyone else?

 

[TC4x4]

I searched on the internet for how to tell if your carrier bearing is going bad and this is what i found and exactly pretty much wht I am feeling.

"You will get vibration when slowing down with you foot off the pedal or coasting if the carrier bearing is going bad, while accelerating it won't vibrate since there is a load on it. I had mine go bad on me and I asked the service manager a million questions about how and why and it killed some time on our test ride. I had quite a bit of play in mine too and he said that they all have a little play in them after using the truck and it's hard to tell that way but the vibration never lies."---random person i dont know.

So i think that is it, SO would you say its hard to replace myslf, i have never done any work in the diff, myself.

 

[DR]

I searched on the internet for how to tell if your carrier bearing is going bad and this is what i found and exactly pretty much wht I am feeling.

I think you are refering to the pinion bearing. A carier bearing is in the middle of a long driveshaft. Like, big four door trucks and one tons. The pinion bearing is on the output of your diff. More or less right behind where your u-joint bolts on.