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Old 12-19-2005, 01:38 PM
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I have a bad bearing in the back, I've ignored it for a bit, but it is louder than the flowmaster now. The gears, carrier bearings, and pinion bearing are good. I have a 500 mile one way trip this weekend, I tend to drive 80+ MPH on the highway. I can replace them but have no time, the last wag that went in for bearings was $700 by the time they were done with everything else(brakes, drums, wheel cylinders, rear brakel line). Should I suck it up and get it done or will I be OK?

[ December 22, 2005, 12:07 PM: Message edited by: Jayrodoh ]
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Old 12-19-2005, 01:46 PM
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St Peter may be tappin' ya on the shoulder soon if ya keep on driving it like that.

I'd get it done soon--and before your trip if you can shake it. At least it will minimise damage to other stuff.
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Old 12-19-2005, 01:57 PM
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Yeah, I didn't think it was good. I imagine the wheel/axle would come out if the bearing came apart. Guess I need to make an appointment or take a vacation day.
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Old 12-19-2005, 02:06 PM
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When a rear wheel bearing experiences a catostrophic failure on a RWD rig, the entire axle shaft tends to slide out of the housing, along with the brake drum, hub, and the wheel and tire that is bolted to the axle shaft.
If this occurs, the rear of the truck will drop suddenly and may start to fishtail back and forth. Now, you should be able to look forward and see your axleshaft rolling, tumbling and spinning down the freeway in front of you. Hopefully, it won't hit that family in the minivan in the other lane.
Often, the entire rear axle assembly will now need to be replaced, due to it's bending as it hit the pavement.
Been there, done that.
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Old 12-19-2005, 02:18 PM
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Wheel probably won't come off, but when bearing locks up and you go into a skid It's Katy bar the door. I am guessing you have an auto that will ake it even more fun because on like a manuel you won't be able to step on the clutch because all the power will go to the wheel thats still turning. Unless you have axles with clips replacing the bearing is not that hard. Jack it up pull the wheel then the brake drum. Now your axle flange should have a hole in it that you can fit a sockett on an extention and pulle the bolts. Now you may need to beg or rent a slide hammer to pull out the axle once you do that you take it to either a machine shop or maybe NAPA could do it for you have them press off the old bearing then press on the new one. Reaseembly is reverse of disassmbly. This is a very simplified write up I am sure that others will chime in with a better understanding of jeep rear diffs than I have .
Good luck remeber you don't know you can't do it till you try.
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Old 12-19-2005, 02:21 PM
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Quote:
Originally posted by bigun:
Good luck remeber you don't know you can't do it till you try.
I've done em, but timing is horrible this week. It wasn't that bad but the last two days it has gotten really loud. I'm tempted to pull them tonight, but it is so much easier to drop it off at Dino's.
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Old 12-19-2005, 02:32 PM
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I've seen a failure just like Illegal describes on a '67 Super Wag. The wheel and axle shaft also did some substantial damage to the body as well as all the mechanical mayhem.
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Old 12-19-2005, 02:50 PM
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Quote:
Originally posted by illegalFSJ:
When a rear wheel bearing experiences a catostrophic failure on a RWD rig, the entire axle shaft tends to slide out of the housing, along with the brake drum, hub, and the wheel and tire that is bolted to the axle shaft.
If this occurs, the rear of the truck will drop suddenly and may start to fishtail back and forth. Now, you should be able to look forward and see your axleshaft rolling, tumbling and spinning down the freeway in front of you. Hopefully, it won't hit that family in the minivan in the other lane.
Often, the entire rear axle assembly will now need to be replaced, due to it's bending as it hit the pavement.
Been there, done that.
I saw that happen ot old Dodge Scooby van on 285 when I was a kid. Starin' right at it when it happened. It had no rear doors on it and the 3 old plumbers in the back had some pretty funny expressions on their faces. The guy in the new Chevy pick up that it sammed into sure didn't.
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Old 12-19-2005, 02:53 PM
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If it's gotten worse in the last two days, wouldn't that suggest it's about to let go really really soon? The rear wheel locking up or coming out at 80mph sounds like certain disaster to me, I want to be able to ship back your crate, which I still have (once school is over, then I have time to run to FedEx. Any parts I should keep an eye out for that I can toss in it?).
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Old 12-19-2005, 03:02 PM
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Good point, Dan, I ran it for 9 months making noise, the sudden increase is probably a sign.

No rush on the crate, although, I may need to renew that fedex label. Let me know when you are dropping it off. The only thing I really need is tan rear door handles, if you run across any, I'll pay for them and your time.
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Old 12-19-2005, 03:05 PM
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While I've experienced the failure first hand...

*YOU* are the best judge on whether you can live with the damage that *MAY* occur.

Keep in mind a failure *COULD* result in some serious damage to yourself, loved ones, or some other poor unfortunate person sharing the road w/ you.

Timing/money is a lame excuse when it comes to a *POSSIBLE* safety hazard to yourself and others.

If a failure occurs, look forward to some additional expense/time/hassle...

Just fix it, maybe a memeber in your area can lend a hand?
I just did mine a short while ago, and it was a couple hundred, but I did most of the work myself.

My baby rides in the waggy, and I would *NEVER* be able to forgive myself if anything happened to her due to neglect/laziness on my part.
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Old 12-19-2005, 03:32 PM
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If I had known you needed tan door handles, I could have sent you about 20 during the summer, seemed like every Wag in every yard had tan interior. Now I think they're all gone. I need to get to a junkyard or two for misc parts, see if they have anything.
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  #13  
Old 12-20-2005, 01:27 AM
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Quote:
Originally posted by babywag:
While I've experienced the failure first hand...

*YOU* are the best judge on whether you can live with the damage that *MAY* occur.

Keep in mind a failure *COULD* result in some serious damage to yourself, loved ones, or some other poor unfortunate person sharing the road w/ you.

Timing/money is a lame excuse when it comes to a *POSSIBLE* safety hazard to yourself and others.

If a failure occurs, look forward to some additional expense/time/hassle...

Just fix it, maybe a memeber in your area can lend a hand?
I just did mine a short while ago, and it was a couple hundred, but I did most of the work myself.

My baby rides in the waggy, and I would *NEVER* be able to forgive myself if anything happened to her due to neglect/laziness on my part.
It's not a money or laziness thing, I was curious what would happen if they did go south. I'd rather do them myself next week and save some cash, but obviously they need to be taken care of so it's going in the shop tommorow.
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Old 12-20-2005, 01:48 AM
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One time I was heading back into town from a rural call when I heard this chittering coming from the front end, like 2 chipmunks quarrelling over sunflower seeds. As I pulled onto the main road from the side road the chipmunks grew to 100lbs each judging by the noise, as the chittering turnded into a knocking scrunking kind of sound. I drove carefully to a friend's service garage a further half block away and fortunately found him still open and his overhead door up. I drove straight onto his lift and got out and said "Hope you don't mind, I'm in a jam here. I hoisted her up and removed the right wheel and hub and was rewarded with a shower of brg rollers.

Fortunately there was still enough of the inner and outer race that damage had not yet occurred to the spindle or the hub. Whew!

A local open-late auto parts place (NAPA) had what I needed the next morning and I was able to get the thing back together and off the lift so my friend could go on with his work.

Lesson I learned quickly is when bearings make noise it's "heads-up" time, and plans need to be made. When the noise suddenly gets worse it's time to stop and do the work now.

[ December 20, 2005, 07:52 AM: Message edited by: drlocke ]
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Old 12-20-2005, 01:56 AM
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that happened with me as well in my 67 j2000. but, i never noticed any typical bearing noises. i was doing about 60 mph on an interstate highway. the symptoms happened so fast that i didn't have time to pull off onto the shoulder. first, the driverside rear locked up for a split second. then, i lost power to the rear. a few seconds later my axle, hub, drum, and tire came out of the tube and went tumbling down the highway barely missing a couple of cars and then bounced over the guardrail into the oncoming lanes of traffic. fortunately for me, the assembly didn't strike another vehicle or pedestrian.
since then, i have been anal about routinely checking and greasing wheel bearings.
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Old 12-20-2005, 02:31 AM
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Quote:
Wheel probably won't come off
It sure as $hit will come out if the bearing fails. I had a similar incident to J10Mike- heading down the interstate at 70MPH, the right rear axle/drum/tire exited the J4000 and kept rolling by as I pulled on the shoulder. It went through a grassy median, launched over the nothbound lanes missing a car by a foot, and ended up on a fence separating the highway from a farm field. It came to rest with about 30' of barbed wire from the fence coiled around the axle shaft. The adrenalin must have really been pumping as I hoisted the whole assembly over my head and RAN back to my truck about 100' away. Funniest part of this scary saga was that several people I knew saw my truck on the shoulder but I was already on my way to a gas station to call a wrecker. They both said that no one else had an orange and white (original paint job) Jeep pickup so they knew it was mine.

Moral of the story- DO NOT attempt to make a long-distance trip on the highway with suspect rear wheel bearings.
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Old 12-20-2005, 03:08 AM
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Seems to me that an extra item to keep in my FSJ toolbox is a fresh change of shorts.
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Old 12-20-2005, 03:21 AM
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I think the guy in the car that the axle flew over was the one needing the new shorts. The actual slide once the axle was gone was pretty benign. Luckily, I was able to get it on the shoulder quickly and even got the backing plate in the grass next to the shoulder. It ground off about 2" of the backing plate on the pavement and of course screwed the brakes up badly- all the springs went with the plate and the shoes fell off.

Also, it was determined that the bearing failed due to the fact that the axle flange was bent slightly. My mechanic friend told me (after the fact) that he had seen my right rear tire wobbling driving behind me one time. He thought it was just a bent rim so he didn't mention it. I had the axle straightened at a machine shop but the bearing was starting to howl again about 2 years later so I just broke down and had Moser Engineering make me a new axle.
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Old 12-20-2005, 03:57 AM
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I've never had a rear (knock on wood) lock up but I did have a front one on my old 68 f250 while pulling my 26 foot travel trailer burn up on I10. The old truck just wasn't pulling up the hill like it usually did so I pulled off at a rest area. I did as I usually do started around the rig from the driver's side around the back then up to the passenger side front feeling tires and hubs to see if any one is showing more heat than the rest. When I got to the passenger side front I stood there for a second while my brain processed what I was seeing the wheel was hanging off the spindle at about a 30* angle. I thought Hm this ain't right, I jacked it up and put a jack stand under it and finished pulling it apart. The large bearing inner race was welded to the spindle. I was able to take a chisel and crack it and was then able to peal it off the spindle. This rest stop was right on the NM/ AZ. border, so I approached a couple explained to them my problem and caught a ride into Lords burg NM. Where I was able to talk a local bank into cashing one of the pay checks I had not cashed, then I went to the Western Auto next door and bought the parts I needed. I started walking back to the truck, when I caught another ride to the bottom of the continental divide. needless to say nobody stops at on the their way up the divide a 7.5 mile hike latter I finally got back to my rig. The big bearing wouldn't fit till I took some Crocus clothe and smoothed it off till the bearing slipped on like it was supposed to. I then was able to putit all together and after 2 days get on my way. Whew is that long or what? You should have been there sitting on the side of the road wondering if your goiung to be able to fix it.
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Old 12-20-2005, 05:34 AM
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Thanks for the stories, as much fun as the 3 wheel thing sounds, think I'll get it fixed. Going in the shop tommorow.
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