[W126 Coupe] Differential / Axle Bolts?

[r_hogarth at foundrycove.com]

Does anyone know if the diff. ratio is the same on the 420 and the 560
and what the differences are by year?
-Richard Hogarth

> -------- Original Message --------
> Subject: RE: [W126 Coupe] Differential / Axle Bolts?
> From: "Sharan Bains" <sharanbains at hotmail.com>
> Date: Mon, November 21, 2005 12:12 pm
> To: mbcoupes at mbcoupes.com
> ??
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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> >W126 SEC Mailing List
> >Postings remain property of MB Coupes, L.L.C.
> 
> 
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> Postings remain property of MB Coupes, L.L.C.