[W126 Coupe] 560 SEC Hydraulic Pump

[Markus Meyer]

Henry,

As Mike says, if you are handy with tools and have some time and patience,
you can do this yourself.  There isn't a ton of room in there to access the
bolts, but if you take your time, it can be done.

To answer your question what happens if you don't have it rebuilt and let it
run empty?  You will have a rough/harsh suspension in the rear, no fun to
drive.  You will burn up the pump as well, not sure what that does to the
motor since it runs off it.  I'd either fix it, or remove the SLS and
convert to conventional rear suspension as on the 300, 420 and 500 models.

Markus

On Thu, Jan 28, 2010 at 8:01 AM, Mike R. <mramay at att.biz> wrote:


>  Henry,

>

> The pump can be rebuilt for under $10. Four allen head bolts hold it to the

> engine, two more hold it together. There are three o-rings inside and any

> local hydraulic hose shop can find you a set. The rebuild kit from MB is

> (IIRC) around $50 and while it only includes one of the o-rings, it does

> include the shaft seal out the back to the pump drive. I did not replace

> that shaft seal but have rebuilt two of the pumps. Piece of cake!!

>

> Call me and I'll talk you through it.

>

> I put in new valve seals when I did the timing chain and that completely

> stopped my oil usage/plug fouling. It's a DIY task, but a difficult one.

> Might be a perfect task in the middle of winter though. :-)

>

> Mike

>

>

>

> *From:* mbcoupes-bounces at mbcoupes.com [mailto:

> mbcoupes-bounces at mbcoupes.com] *On Behalf Of *Henry Viveiros

> *Sent:* Wednesday, January 27, 2010 3:42 PM

> *To:* 'Mercedes Coupes Mailing Lists'

> *Subject:* [W126 Coupe] 560 SEC Hydraulic Pump

>

>

>

> The rear suspension hydraulic pump is leaking quite a bit and I have been

> told that it would cost $1,300 parts & labor to replace it.

>

> Can I just let the oil run out and not replace the pump? What would happen

> if I did that?

>

> I have also had a problem with the #4 spark plug fouling with oil and that

> needs either an upper end rebuild for several thousand dollars or an engine

> rebuild if the problem is oil rings.

>

> No virus found in this incoming message.

> Checked by AVG - www.avg.com

> Version: 8.5.432 / Virus Database: 271.1.1/2647 - Release Date: 01/26/10

> 19:36:00

>

> The MB Coupes Website!

> W126 SEC Mailing List

> Postings remain property of MB Coupes, L.L.C.

>

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.pairlist.net/pipermail/mbcoupes/attachments/20100128/7a5f6f29/attachment.html>