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#1
03-01-2008, 10:15 PM
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Mercedes Pin Sockets available
I'm getting ready to replace a leaking transmission output flange seal, as well as a leaking differential input flange seal on a fintail, so I started searching for the special pin sockets that fit the special nuts in both of these locations.
Found that they are not available through Mercedes, or Assemacher, but Sir Tools does still make them. Spoke with Mark at ZDMack tools and he's started carrying them as a pair and he's added them to his ebay store if anyone's interested in adding them to the tool quiver.
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 1966 W111 250SEC:
DB268 Blaugrün/electric sunroof/4 on-the-floor/4.5 V-8 rear axle 
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#2
03-02-2008, 01:59 AM
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When doing the differential seal, be sure to index the nut to the pinion shaft relation b/c if you over-torque upon re-assembly , you will have to replace the crush sleeve in order to regain the proper pinion shaft bearing pre-load specs........once the crush sleeve has been tightened beyond bearing load spec, it can not be loosened/turned back and must be replaced.
I use an inch/lb wrench to set the rotational load [ preferred method], but indexing will work..... Or at least get you back to where it was before you took it off............
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A Dalton
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#3
03-02-2008, 03:17 AM
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Quote:
__________________
1966 W111 250SEC:
DB268 Blaugrün/electric sunroof/4 on-the-floor/4.5 V-8 rear axle
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#4
03-04-2008, 10:31 AM
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Back Axle
Quote:
naj
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#5
03-04-2008, 11:05 AM
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Quote:
With completely assembled axle [ minus brake/drag] , you want rotational torque load at pinion to be 22-26 in/lbs [26-30 cm.-kg]. This usually equates to a pinion shaft nut tightening torque range of 110-150 ft/lbs torque. So it is the rotational load that you are concerned with, not the nut ft/lbs. The ft/lbs should just fall into that range to accomplish the proper load and is only an approximation, as all unit will differ. When doing seals , I use the lower spec. of 21/22 in/lbs, but that is just my preference.......... If doing just a pinion/crush sleeve [ un-assembled diff.], you want 14-15 in/lbs for NEW bearings and 4-9 in/lbs if using the originals [ used]. Small nut tightening increments with the ft/lbs [ I use 1/8" movements] followed up with in/lb. measures at each incremental change is the way to assure you do not over-compress the crush/load .You already know what that entails, so be careful and take your time. The Index method is the most commonly used procedure, but I am not a fan of that school b/c indexing only gets you back to where it was , and that would assume the guy before you knew what he was doing ,let alone not taking into consideration bearing wear [ if any] from the last time it was done [ if ever]. I always go to the preferred exacting measures, as you are in there anyway and then you are sure.. However, when using index, many times you could take a rotational force reading check after the index is aligned and find the specs to be fine.. so a final measure . even if just indexing, is always assuring. The indexing procedure is most commonly used due to the lack of an inch/lb wrench with that low a range and the lack of the proper pin wrench in ones tool assortment. I have seen many Benz Experts [ self-proclaimed] just knock the nut home with a Punch and a Hammer ... with total disregard of even indexing ...ouch !!!! They must have a good sense of feel.... 
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A Dalton Last edited by Arthur Dalton; 03-04-2008 at 01:49 PM.
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#7
03-05-2008, 09:44 AM
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Quote:
__________________
A Dalton
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