driveshaft bearing R&R

Adam Gratz adamgratz at
Sat Feb 4 15:45:35 EST 2006


In the BMW world of the past, we would space sagging center bearings with 5
or six washers per side. Seems simple, but if the bearing is quiet (ie still
good) this can stop the clunk and vibration. Also, don't forget to check the
rear diff mounts. Broken mounts can cause symptoms as mentioned below.

my 02cents

Dr. Gratz

> Message: 3
> Date: Fri, 3 Feb 2006 14:03:50 -0500
> From: Brady Moffatt <brady at>
> Subject: RE: driveshaft bearing R&R
> To: 'Mike Del Tergo' <mdeltergo at>, 200q20v at
> Cc: PeterBergin at
> Message-ID: <673F9D8858A7D311B5BE0004AC96C6EF45C7EF at REGAL01>
> Content-Type: text/plain;       charset="iso-8859-1"
> When the center bearing on my 4kq went, it started screaming away, but did
> not clunk in any way. No other symptoms at all. Just the intermittent
> screeee sound from under the car. It got an injection of grease through
> the
> rubber insert, which helped for awhile.
> The rubber insert is quite soft even when new, at least on the 4kq
> bearing.
> I assume the thpe 44 bearing is quite similar, so I'd be wary of changing
> the bearing due to just a soft rubber insert/support of the support
> bearing.
> Cheers, Brady
> 83 urq,       [][] oooo [][]
> 86 4kq,        O O oooo O O
> 91 200qa20v, [  ]  oooo  [  ]
> 72 240Z
> -----Original Message-----
> From: Mike Del Tergo [mailto:mdeltergo at]
> Symptoms are a driveline "lash" (nice heavy metal clunk) seems to be
> coming
> from the middle or RR of the car during quick shifts.  Visual symptoms are
> a
> collapsed carrier bearing "rubber" insert. (not necessarily related)
> There is an overview on the KB, but I was sure some one has done it all
> with
> all the post requesting the MB/BMW part to do the R&R.  Any one buy Blaus
> kit?  Supposedly come with detailed R&R.
> Mike
> From: PeterBergin at
> Subject: Re: driveshaft bearing R&R
> Mike, what are your symptoms?  My Avant has made an intermittent
> rattling/metallic tapping noise briefly during hard accelerating  for a
> long
> time, no
> vibration or feel in the peddles or shifter.  When I am  pulling a trailer
> or
> have a lot of cargo weight their is no noise.  I  assumed it to be a heat
> shield
> or something.  I have 197k on the car.
> Pete
> 91 Avant

More information about the 200q20v mailing list