I can use and will appreciate any tips you may offer.
Which bolt was trouble?
Understand the Allen key for the hub bolt is 8 mm.  How 'bout the pulley?

Which 603 do you have?

BTW, R-12 check is on the way.

Wilton

----- Original Message ----- From: "Rolf" <r...@winmutt.com>
To: "Mercedes Discussion List" <mercedes@okiebenz.com>
Sent: Wednesday, September 08, 2010 10:28 AM
Subject: Re: [MBZ] 91 350SDL water pump


I missed the beginning of this thread, I just replaced the water pump on my 603 if anyone needs help. It was pretty easy with the exception of one bolt.

-Rolf

On 09/07/2010 02:19 PM, WILTON wrote:
'Been concerned 'bout that; thanks for the cardboard tip.

Wilton

----- Original Message ----- From: "Alex Chamberlain" <apchamberl...@gmail.com>
To: "Mercedes Discussion List" <mercedes@okiebenz.com>
Sent: Tuesday, September 07, 2010 1:45 PM
Subject: Re: [MBZ] 91 350SDL water pump


On Mon, Sep 6, 2010 at 3:27 PM, Peter Frederick <psf...@earthlink.net> wrote:
On my 300D, there is a pair of raised ridges on the bearing housing. Bend a
stiff wire that fits into the holes in the fan housing and use those two
ridges to hold the wire while unscrewing the 8mm bolt from the hub. Should be fairly easy with a short piece of pipe over the 8mm Allen key, which is
the way I do it. You will have to use both hands to unscrew the bolt.


I'd go a step further than Peter and make a ratcheting tight-clearance
Allen wrench by cutting an inch off the 8mm key and holding it in a
GearWrench.  Otherwise you are sure to bang the radiator at some point
while repositioning the wrench for the next rotation.  Damage can be
mitigated by putting a couple of sheets of cardboard between you and
the radiator, but why take the chance?

Alex

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