[W126 Coupe] Differential / Axle Bolts?

[Sharan Bains]

Mike,

You'll never get anywhere with an air gun....

You'll need max pressure/force...and have someone stamp on the brake pedal 
whilst you're trying to loosen.

Loose the air gun - use a power bar.

They are loctited in - put the 10mm allen key in the bolt, put an extension 
on and hammer hard 3-4 times. You need to be  hammering very hard to shake 
those bolts - then attach the power bar, get someone to press the brake 
pedal and then crack open - I did my 560 diff change about 5 months back - 
absolute pain in the backside...took me a good 90 minutes to just loosen up 
all twelve bolts.

Before you remove though, get new bolts from MB - they have been changed to 
Torx heads, so you don't get the problem of slippage/rounding of heads that 
you get with the allen heads. Once you have finished loosening those allen 
bolts, they will not be in a re-usable state really...

Simply using an air gun on those will ruin the heads...and you're really be 
in trouble....

talbir



>From: "Mike R." <mramay at att.biz>
>Reply-To: Mercedes Coupes Mailing Lists <mbcoupes at mbcoupes.com>
>To: "'Mercedes Coupes Mailing Lists'" <mbcoupes at mbcoupes.com>
>Subject: [W126 Coupe] Differential / Axle Bolts?
>Date: Mon, 21 Nov 2005 09:44:36 -0800
>
>Trying to pull the 2:47/1 diff. on the SEC. The 10mm bolts that are in the
>axle flange on the differential won't come loose. These are the six allen
>head bolts that hold the axle to the axle flange on the differential.
>
>I've tried a 450 ft/lb Mac Tools air gun in both CW and CCW direction and
>the bolts won't budge, even with the air pressure up to 100 PSI. I can see
>the allen heads move a couple of thousandths, almost like the bolts are
>captured somehow, but nothing appears to be holding them. No safety wire, 
>no
>flanges, nothing.
>
>Are these bolts supposed to just unscrew normal counter-clockwise to remove
>them? Do I just need to overpressurize the air gun with more than 100psi to
>"convince" them to come out?
>
>
>
>Thanks,
>
>Mike R.
>
>(702) 494-8056
>
>
>


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