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Steve M.
Samba Member
Joined: July 30, 2013
Posts: 6833
Location: Fort Lauderdale, Fl.
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 Posted: Wed Dec 13, 2017 6:43 pm Post subject: CV boot flange deformed or is this normal? |
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Okay today's moment of puzzlement came as I popped underneath to check the Temp Sensor and found grease on it...
The Left Inner CV Boot Flange had the clamp come off.
These have less then 900 miles on them and no noises at all from the cv joint.
The most articulation the axle has had has been when lifting it up on jacks.
The flange lip as can be seen is no longer straight where the boot sits on it.
Unless it is not supposed to be straight and this is meant to help keep the boot on and the mfg. clamp was not tight?
So what's your opinion of it?
Now the only clamp was the one on the big end, the small end was free.
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Last edited by Steve M. on Wed Dec 13, 2017 7:15 pm; edited 1 time in total |
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Vanagon Nut
Samba Member
Joined: February 08, 2008
Posts: 10379
Location: Sunshine Coast B.C.
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| Posted: Wed Dec 13, 2017 7:14 pm Post subject: Re: CV boot flange deformed |
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Abrasion marks on flange where boot fits might indicate a loose clamp?
Flange lip looks like it uniformly flares slightly larger? If so, i agree. Might be designed that way to help keep the flange clamp (end of boot) from slipping off.
I dont recall seeing that type of design. Most or any boot ive seen appeared to be bonded to the flange.
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1981 Westy DIY 15º ABA
1988 West DIY 50º ABA
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Steve M.
Samba Member
Joined: July 30, 2013
Posts: 6833
Location: Fort Lauderdale, Fl.
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| Posted: Wed Dec 13, 2017 7:17 pm Post subject: Re: CV boot flange deformed or is this normal? |
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I cleaned the grease off the inside lip of the boot and used a big Zip-Ty on it.
So I guess I'll find out tomorrow if it held.
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xavior12
Samba Member
Joined: September 25, 2006
Posts: 92
Location: Portland, Oregon
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| Posted: Wed Dec 13, 2017 7:31 pm Post subject: Re: CV boot flange deformed or is this normal? |
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| Looks like the axle shaft rubbed on the inside and flared out the flange? |
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Wildthings
Samba Member
Joined: March 13, 2005
Posts: 50353
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| Posted: Wed Dec 13, 2017 8:25 pm Post subject: Re: CV boot flange deformed or is this normal? |
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Where are your schnorr washers? Naughty, naughty, you should never run without them. Don't see many of your style boots, but I have occasionally seen other styles fall apart as well.
Last edited by Wildthings on Wed Dec 13, 2017 9:00 pm; edited 1 time in total |
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Steve M.
Samba Member
Joined: July 30, 2013
Posts: 6833
Location: Fort Lauderdale, Fl.
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| Posted: Wed Dec 13, 2017 8:52 pm Post subject: Re: CV boot flange deformed or is this normal? |
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| Wildthings wrote: |
| Where are your schnorr washer? Naughty, naughty, you should never run without them. Don't see many of your style boots, I have occasionally seen other styles fall apart as well. |
I was snoring when I did that part. (out of stock locally).
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AtlasShrugged
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Joined: October 30, 2008
Posts: 1605
Location: Decatur, Ga. USA
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| Posted: Thu Dec 14, 2017 5:22 am Post subject: Re: CV boot flange deformed |
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| Vanagon Nut wrote: |
Abrasion marks on flange where boot fits might indicate a loose clamp?
Flange lip looks like it uniformly flares slightly larger? If so, i agree. Might be designed that way to help keep the flange clamp (end of boot) from slipping off.
I dont recall seeing that type of design. Most or any boot ive seen appeared to be bonded to the flange. |
Looks like a Rockford boot. Maybe the OP can confirm? The Rockford has four ribs..the OPs boot looks like it has three ribs and has some extra boot rubber showing extending outside the location for the small axle clamp, hard to tell but if so could be the wrong CV boot for the application
Could be the Oetiker clamp just did not hold and the boot slipped off. Those Rockford boots are thick and don't flex easily.
The Oetiker clamps on mine look thinner..maybe a good thing.
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Abscate
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Joined: October 05, 2014
Posts: 22670
Location: NYC/Upstate/ROW
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| Posted: Thu Dec 14, 2017 6:29 am Post subject: Re: CV boot flange deformed or is this normal? |
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| Wildthings wrote: |
| Where are your schnorr washers? Naughty, naughty, you should never run without them. Don't see many of your style boots, but I have occasionally seen other styles fall apart as well. |
Didn't VW tell you to discard these in a later TSB?
Just as a reminder - anytime CVS have been off, they go back on, torque to spec, then check again in 100 and 500 miles.
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Steve M.
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Joined: July 30, 2013
Posts: 6833
Location: Fort Lauderdale, Fl.
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| Posted: Thu Dec 14, 2017 8:27 am Post subject: Re: CV boot flange deformed or is this normal? |
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| Abscate wrote: |
| Wildthings wrote: |
| Where are your schnorr washers? Naughty, naughty, you should never run without them. Don't see many of your style boots, but I have occasionally seen other styles fall apart as well. |
Didn't VW tell you to discard these in a later TSB?
Just as a reminder - anytime CVS have been off, they go back on, torque to spec, then check again in 100 and 500 miles. |
Torqued to 33 ft-lbs (45Nm). Dam creeper kept sliding out on me!
Looks as if the Zip-Ty worked. Drove 18 miles on it and no grease visible looking through the wheel well. Have to get under there in a bit.
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Abscate
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Joined: October 05, 2014
Posts: 22670
Location: NYC/Upstate/ROW
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| Posted: Thu Dec 14, 2017 8:36 am Post subject: Re: CV boot flange deformed or is this normal? |
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Sorry, I should have made clear the torque is completely irrelevant to the boot coming loose.
Ive had a zip tie on a Volvo front axle CV now for 50,000 miles.
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Wildthings
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Joined: March 13, 2005
Posts: 50353
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| Posted: Thu Dec 14, 2017 8:53 am Post subject: Re: CV boot flange deformed or is this normal? |
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| Abscate wrote: |
| Wildthings wrote: |
| Where are your schnorr washers? Naughty, naughty, you should never run without them. Don't see many of your style boots, but I have occasionally seen other styles fall apart as well. |
Didn't VW tell you to discard these in a later TSB?
Just as a reminder - anytime CVS have been off, they go back on, torque to spec, then check again in 100 and 500 miles. |
The Schnorr washers are used under the bolt heads, while the belleville style washers that fit over the shafts behind each CV joint were eliminated.
Last edited by Wildthings on Thu Dec 14, 2017 9:06 am; edited 1 time in total |
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Steve M.
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Joined: July 30, 2013
Posts: 6833
Location: Fort Lauderdale, Fl.
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| Posted: Thu Dec 14, 2017 8:57 am Post subject: Re: CV boot flange deformed or is this normal? |
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| Abscate wrote: |
Sorry, I should have made clear the torque is completely irrelevant to the boot coming loose.
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Of course! 
They used stainless steel locking ties like these. Not Oetiker clamps.
They probably did not tighten it down properly
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Steve M.
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Joined: July 30, 2013
Posts: 6833
Location: Fort Lauderdale, Fl.
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| Posted: Thu Dec 14, 2017 9:02 am Post subject: Re: CV boot flange deformed or is this normal? |
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The "flaring" looks as if it is normal design as it is perfectly even and the the edge is bent over at the end to make a smooth edge.
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Vanagon Nut
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Joined: February 08, 2008
Posts: 10379
Location: Sunshine Coast B.C.
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| Posted: Thu Dec 14, 2017 11:42 am Post subject: Re: CV boot flange deformed |
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| AtlasShrugged wrote: |
| Vanagon Nut wrote: |
...... I dont recall seeing that type of design. Most or any boot ive seen appeared to be bonded to the flange. |
Looks like a Rockford boot. Maybe the OP can confirm? ....
..... Those Rockford boots are thick and don't flex easily.
The Oetiker clamps on mine look thinner..maybe a good thing.
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Thanks.
I can see those factors playing into this. Especially if the boot is stiffer than normal.
Neil.
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1988 West DIY 50º ABA
VE7TBN |
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Wildthings
Samba Member
Joined: March 13, 2005
Posts: 50353
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| Posted: Thu Dec 14, 2017 12:12 pm Post subject: Re: CV boot flange deformed or is this normal? |
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| These may be the Rockford boots that were being sold several years back that were too short and thus too stiff. Possibly Rockford would be willing to provide free replacements? |
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