[V8] Bumptey, Bumpety, Bump, Bump, Bump

Ingo Rautenberg ingo.rautenberg at gmail.com
Sat Dec 26 10:42:34 PST 2009


Mark,

This will get stripped on the list, but I've attached a PDF I made of the
pertinent Family Album section: Main Group 5, Sub Group 5, illustration
48-10.  Bump stop is number 9, and that includes a (iirc) black cover and
orange hard rubber bump stop, PN# 441 512 129

Regards,

Ingo

On Sat, Dec 26, 2009 at 1:30 PM, Mark Kalbskopf <gbmarc at cox.net> wrote:

> Ingo,
>
> I don't see a rubber bump stop. At least nothing that looks like the one in
> the manual diagram 42-70-1. There's nothing visible around the shiny piston
> part either. If I remove what the manual calls the  'protective boot' and
> 'protective cap' then I could possibly imagine the top 1/4" of something.
> Should it be clearly visible?
>
> Mark.
>
>
>
> On Dec 26, 2009, at 12:53 PM, Ingo Rautenberg wrote:
>
>  Mark,
>>
>> Couple things. Yes, could well be a blown shock. Or/and the rubber bump
>> stop may well have disintegrated. Have you had any suspension work done on
>> that side? If so it could also be something improperly-tightened/ loose.
>> Another source for a noise like you are describing is either missing or
>> failed rear differential mount (hard to see because it's above the diff
>> iirc). That's all I can with of for now. Good luck.
>>
>> Ingo Rautenberg
>>
>> -----Original Message-----
>> From: Mark Kalbskopf <gbmarc at cox.net>
>> Date: Sat, 26 Dec 2009 12:46:07
>> To: <v8 at audifans.com>
>> Subject: [V8] Bumptey, Bumpety,  Bump, Bump, Bump
>>
>> While dashing thru the snow on my 254 horse old sleigh,
>> I have this sporadic thump,  thump, thump from behind the rear LHS
>> passenger as we go over the deeper holes..
>> My road is like a rutted farm track with 'pot holes' in the snow down
>> to the asphalt every so often.
>> It sounds like something is hitting the body or almost like the Left
>> rear suspension is bottoming out (hard to beleive)
>> Everything is quiet once we're on smooth surface again.
>>
>> I have the car up in the air right now but can't see anything loose.
>> The exhaust is very firmly attached.
>> I have never changed the rear shocks in the 10 years I've had the
>> car.  Could this simply be worn out shocks?
>>
>> Mark.
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>


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