Date: Wed, 3 Dec 2008 16:59:17 +1000
Reply-To: Dave Yates <transparu@GMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Dave Yates <transparu@GMAIL.COM>
Subject: Re: Rear wheel bearings
In-Reply-To: <DC76EECF57394F31A576011AA623F669@MAINCOMPUTER>
Content-Type: text/plain; charset=ISO-8859-1
Well folks,
I found (at least part of) the problem. The car is still in pieces though.
It was a right outer roller bearing, part no 211501283D , Brand KMM!
Now is THAT Chinese?
I decided to look at the right side first as I used a stethoscope and
when I jacked up the car and ran it that way reckoned there was a bit
of noise there that sounded a bit like a railroad over an above the
other noises on that side and compared with the left.
One of the rollers fell out of its cage as I removed the axle!. When
I tried to turn the bearing by finger it was a little rough. I
finally got the outer bearing off and as I cleaned it a large number
of flakes of silvery metal washed out onto a rag with the Kerosene.
When I had cleaned out the grease properly, through the gap in the
cage where the roller had fallen out I could see quite bad grinding
and score marks on the inside of the outer race. These extend in
patches about 25% around the inside of the race! I'll take some
photos.
My replacement is NOT KMM.
This is NOT good for a bearing after about 5,000km and I am hoping the
other side doesn't suffer the same fate!
The Inner bearing seems fine.
Thanks for your interest folks . . I would be very interested to hear
experience with KMM bearings and any other parts. I'll be sure to let
my US supplier know, pronto!.
All the best from downunder
Dave
NB A correction to my original post. Sorry for the confusion, but the
symptoms DO fit the info now.
>>>>> The noise/vibration is worst around 60kph. I can feel it in the
>>>>> brakes (foot and hand). When I do a RIGHT turn/curve it is there but
>>>>> when I do a LEFT turn it disappears.
2008/12/2 Courtney Hook <courtneyhook@shaw.ca>:
> Chinese bearings?
> Courtney
>
> ----- Original Message ----- From: "Dave Yates" <transparu@GMAIL.COM>
> To: <vanagon@GERRY.VANAGON.COM>
> Sent: Monday, December 01, 2008 7:19 PM
> Subject: Re: Rear wheel bearings
>
>
>> Thanks Guys.
>>
>> I had the right socket and torque/tension wrench and did all the right
>> things when tensioning the wheel nuts.
>>
>> I have got onto a local source for the bearings just now and will both
>> on hand when I pull it down again tomorrow.
>>
>> I AM pretty certain it is the left side though as it is that side of
>> the car that vibrates most at just the right(wrong) speed.
>>
>> Thanks again,
>> Dave
>> downunder
>>
>>
>>
>> 2008/12/2 Scott Daniel - Turbovans <scottdaniel@turbovans.com>:
>>>
>>> fwiw, I've been fooled on an FWD car before too, one time, long ago.
>>> but 'normally' ...........if it's noisier/rougher going left, and not
>>> there
>>> going right, especially on a 2WD rear -drive vehicle........
>>> it's the left side acting up.
>>> as for inner or outer race..........
>>> I like to check bearing races for wear or roughness two ways .........one
>>> is
>>> clean them with carb cleaner so there's no oil or grease.........that
>>> amplifies the roughness when you turn them by hand, in your hand.
>>> The other way is examine the bearing races with a microscope- they often
>>> look like the surface of the moon.
>>>
>>> I'll second that 'check the axle nut'.
>>> the torque on those is way up there. I stand on the end of a 4 foot
>>> cheater
>>> bar ........
>>>
>>> And holding the wheel hub from turning...........that can be tricky. I
>>> have
>>> a very solid wheel hub holding tool I made just for that.
>>> If you're using the 'friend standing on the brakes method' ..........or
>>> chocking the wheel with parking brake on, it may not get tight enough.
>>>
>>>
>>> ----- Original Message -----
>>> From: "aatransaxle" <daryl@AATRANSAXLE.COM>
>>> To: <vanagon@GERRY.VANAGON.COM>
>>> Sent: Monday, December 01, 2008 6:29 PM
>>> Subject: Re: Rear wheel bearings
>>>
>>>
>>>> Betting the axle nut was too loose after the repack/repl on that
>>>> side..Them
>>>> puppies have to be double tight and if your unsure how you
>>>> did..re-torqued
>>>> after a 100 miles to be sure. Thats the only time I have ever seen new
>>>> bearings go bad too soon.
>>>> No way to diagnose for sure without removal, but when doing a left turn,
>>>> the
>>>> right side is the one thats loaded and thats the side thats usually
>>>> bad...Just because it makes noise on a left turn doesn't mean its a left
>>>> brng bad.
>>>> But of course I have been fooled in the past by such things on front
>>>> wheel
>>>> drive rigs..ymmv
>>>> Daryl of AA Transaxle
>>>> (425) 788-4070
>>>> aatransaxle.com
>>>> 86 Syncro Westy
>>>> Zetec in the trunk
>>>> ----- Original Message -----
>>>> From: "Dave Yates" <transparu@GMAIL.COM>
>>>> To: <vanagon@GERRY.VANAGON.COM>
>>>> Sent: Monday, December 01, 2008 6:01 PM
>>>> Subject: Rear wheel bearings
>>>>
>>>>
>>>>> As preventative maintenance, I recently (about 5000km ago) replaced
>>>>> all wheel bearings (front and back) on my Vanagon. I used
>>>>> German-branded parts. I did the job carefully, packing with the
>>>>> correct grease and properly tensioning etc.
>>>>>
>>>>> The left rear has just started making a dreadful rumbling/drumming
>>>>> noise which I can only put down to a collapsed bearing - amazing
>>>>> considering I had 26 years without this ever happening.
>>>>>
>>>>> The noise/vibration is worst around 60kph. I can feel it in the
>>>>> brakes (foot and hand). When I do a left turn/curve it is there but
>>>>> when I do a right turn it disappears.
>>>>>
>>>>> Has anyone any suggestions of how to try to work out if it is inner or
>>>>> outer bearing before I pull the confounded thing apart again?
>>>>>
>>>>> Thanks folks.
>>>>>
>>>>> Dave
>>>>>
>>>>> (Oh, replaced the hex-head CV joint bolts with start-bolts and found
>>>>> it much easier to do up the CV joints when I installed the bearings.)
>>>>>
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