Re: CV joint boot grease leakage
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Re: CV joint boot grease leakage
| Elle | 21 Dec 2007 00:27 |
>> If I were the tech working on this car, then I would >> hesitate to just tighten up the boot bands. [quoted text clipped - 10 lines] > to enter, but is > just enough to allow grease to leave. I hear you. I also found a few reports (though lacking updates) of same in the Honda newsgroups. Indeed, especially with aftermarket shafts, and with three of four leaking, it seems like a good first guess.
I have yet to hear of a catastrophic CV joint failure on the Honda newsgroups, besides. Clicking and clunking, but not a dangerous failure while driving. Though I am sure it could happen.
> In such a case it is standard operating procedure to > simply replace the [quoted text clipped - 22 lines] > length of time under unknown conditions that the joint > should be replaced. http://www.tegger.com/hondafaq/rustybrakes/brakes4.html#cv seems to imply that one should just replace the boots if one finds them split. It's a little vague. I think I'd be more emphatic that the choice these days is to replace the halfshaft.
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| Tegger | 20 Dec 2007 23:46 |
> If I were the tech working on this car, then I would > hesitate to just tighten up the boot bands. It sometimes happens (only on aftermarket) that the bands are insufficiently tightened. When that occurs it's not like the boots are loose the way your sleeve is on your arm, but that they're loose just enough to be unable to keep violently flung grease from being flung out the tiny gap. The gap is far too tiny to allow dirt or water to enter, but is just enough to allow grease to leave.
In such a case it is standard operating procedure to simply replace the bands and make sure the new ones are sufficiently tight.
However, as I said, my advice was based on a possibly faulty reading of the OP's description of the problem. If, and only if, there are no visible splits in the boot, should the bands be replaced. A professional tech should be able to tell the difference between a split boot and loose bands.
> Aside: I was reading at your site a little while ago on > this, to see if we were of the same thinking. Have you > changed your position about changing only the boots when the > boot splits but the joint seems fine? Where do I say that? If that appears anywhere I'd better get rid of it.
My opinion has always been that if the boots have been split for an unknown length of time under unknown conditions that the joint should be replaced.
 Signature Tegger
The Unofficial Honda/Acura FAQ www.tegger.com/hondafaq/
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| Elle | 20 Dec 2007 20:01 |
> "Elle" <honda.lioness@nospam.earthlink.net> wrote >> If grease is leaking from the boots, failure is likely [quoted text clipped - 11 lines] > which is different from leaking due to a split in the > boot. I think we should see what KR says about the halfshafts' history.
KR, did you buy this car new or used? If new, has any work been done on the halfshafts before the boots started leaking? If used, have you any of the cars' maintenance and repair history?
If I were the tech working on this car, then I would hesitate to just tighten up the boot bands. It's said that ingress of dirt of any kind into the CV joint grease leads to failure. Maybe if I'd seen more reports of just tightening working fine, I'd go with this fix. But it sure does not come up here much, if at all.
OTOH, since clicking (outer joints) and clunking (inner joints) normally present before full failure, your approach might be worth a try. Whether a shop will agree to do only this is another matter. I guess they might.
> So, to elaborate: If the boots are split, replace the > shafts. Aside: I was reading at your site a little while ago on this, to see if we were of the same thinking. Have you changed your position about changing only the boots when the boot splits but the joint seems fine?
Not that I am presenting myself as experienced as you. Just an observation.
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| Tegger | 20 Dec 2007 19:40 |
"Elle" <honda.lioness@nospam.earthlink.net> wrote in news:13mlglrst7vac79 @corp.supernews.com:
> If grease is leaking from the boots, failure is likely not > far away. You don't want them failing when you are driving > down the highway. How long they'll last is hard to say, but > point is, you want some peace of mind. OP should ascertain if the boots are split or not.
When I read his message I gathered it was leaking from the boot/band join, which is different from leaking due to a split in the boot.
So, to elaborate: If the boots are split, replace the shafts. If the boots are leaking because the bands are insufficiently tight, replace the bands only.
And to the OP: CV joint boots split with regularity if not examined once in a while.
 Signature Tegger
The Unofficial Honda/Acura FAQ www.tegger.com/hondafaq/
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| Elle | 20 Dec 2007 19:30 |
If grease is leaking from the boots, failure is likely not far away. You don't want them failing when you are driving down the highway. How long they'll last is hard to say, but point is, you want some peace of mind.
Your garage is right about just replacing the half-shafts. Reason: "Simply" re-packing is expensive, because the tech first has to take off the half shaft, then remove the boot, then thoroughly clean (and CV joint grease is about the thickest grease-based lubricant you'll see on a car), then re-pack. Major time in labor. Also, rebuilt half-axles have become plentiful, forcing down their price. IIRC boot quality has improved since 1996, so this may be the last half shaft replacement the car needs.
To see how competitive your shop is, check prices for half shafts for your Accord at Majestic Honda (probably around $150 per half-shaft), Napa Auto Parts and Autozone (closer to $75 per half-shaft). Insist on OEM from your garage, though that may be automatic, since one half shaft from one model of Honda does not exchange generally with that of another model. Compare prices.
Figure labor of a couple hours? That's a rough ballpark. Lots here have done the job, so check back for how long they think this should take.
I disassembled a CV joint a year or so ago in an automotive course, then reported on current practices and the thinking behind them for repairing CV joints.
Elle Original owner, 1991 Civic
> 96 EX Accord w 150k miles. On right inner & outer & left > inner cv [quoted text clipped - 15 lines] > boot/clamp there is > seepage. Any ideas? |
| KR | 20 Dec 2007 18:39 |
96 EX Accord w 150k miles. On right inner & outer & left inner cv joints there is a grease leak from the ends of the boots. Boots are good & the boot clamps look ok. Why/how is grease getting out? No typical bad cv joint symptoms yet. Garage recommended new half axles - apparently nobody changes just boots anymore because of the labor costs. Before I go that route I'll get a lot more miles out of these - at least until they start clicking. I've not heard of grease leaking from good joints/boots. It's the vertical sling out pattern on the facing & backing surfaces & right where the boot/clamp there is seepage. Any ideas?
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