[W126 Coupe] Differential / Axle Bolts?

[Iain Gunn]

All loctite is broken down with heat. Link to technical data sheet for 
medium strength, blue,  http://tds.loctite.com/tds5/docs/242-EN.pdf   BTW 
250 degrees, not very high, can be obtained with a propane torch.
Most threadlocker that mb uses is medium strength.
Link to Loctite site 
http://www.loctite.com/int_henkel/loctite_us/index.cfm

----- Original Message ----- 
From: "Sharan Bains" <sharanbains at hotmail.com>
To: <mbcoupes at mbcoupes.com>
Sent: Monday, November 21, 2005 1:12 PM
Subject: RE: [W126 Coupe] Differential / Axle Bolts?


> 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
>>
>>
>>
>
>
>>The MB Coupes Website!
>>W126 SEC Mailing List
>>Postings remain property of MB Coupes, L.L.C.
>
>
> The MB Coupes Website!
> W126 SEC Mailing List
> Postings remain property of MB Coupes, L.L.C.
>
>