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#1
12-08-2003, 10:09 AM
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front wheel bearings?
How hard is it to change the front wheel bearings on an 83 300sd. I have never done a car with discs, all of my other stuff is to old for that. Where would I find information on how to do this?
Many thanks. Hudson 
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#2
12-08-2003, 10:52 AM
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my50trk
The job is not difficult. Do a search, lots of info about wheel bearings there.
__________________
 1985 Euro 240D 5 spd 140K 1979 240D 5 spd, 40K on engine rebuild 1994 Dodge/Cummins, 5 spd, 121K 1964 Allice Chalmers D15 tractor 2014 Kubota L3800 tractor 1964 VW bug "Lifes too short to drive a boring car"
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#3
12-08-2003, 12:51 PM
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The drill is similar to other cars,
Difference is MB actually follows bearing manufature instructions for proper clearance. You'll need a dial indicator. I'd suggest MB grease too. Read the section in your W126 manual. It should be quite clear. Michael
__________________
Michael McGuire 83 300d 01 vw A4 TDI 66 Chevy Corsa 68 GMC V6 w/oD 86 300E
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#4
12-08-2003, 10:46 PM
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I just did them on my 81SD it took about two hours per side working slow and careful.I set them by feel tighting them up till they were hard to turn and then backing them off about one third turn.Lots of tips in search.Make sure that your new races are put in evenly and are fully bottomed out .........
William Rogers.........
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#5
12-08-2003, 11:12 PM
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William,
I guess your wheel bearings are adjusted (miss adjusted) too loose then! Really, Stu Ritter aka long time Benz mechanic states he has never seen a *professional* mechanic adjust the wheel bearings by feel to within factory tolerances. It was his way of making techs use the dial indicator. If they got it correct.. he would never say another word. Never happened You maybe a better man than the rest of us..... Michael
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Michael McGuire 83 300d 01 vw A4 TDI 66 Chevy Corsa 68 GMC V6 w/oD 86 300E
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#6
12-09-2003, 03:22 AM
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maybe so I get a lot of miles the way I do it and defy DIYer to set up a dial indicator and try and get even close MB factory specs most dial indicators are only acurate to plus or minus one thousandths while MB specs are in the ten thousandths range. possible a trained tech with the best indicator and base made could do it but I even dought that .I owned a machine shop for ten years and used an indicator a lot and dought very much that there is anywhere to set up for such a reading and further dought that the hubs or spindle are machined that close, so what you get is a fancy looking method at a fancy price.......
William Rogers........
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#8
12-09-2003, 02:21 PM
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Well,
They designed it a certain way for a reason. I've done lots of design work *and* worked in a machine shop too+ plus turned wrenches. I default to the Factory manaul which concures with SKF and Timken design manuals. I think the tolerance is around 0.001" for a W123. It's not hard to use a magnetic base, on the hub and setup the indicator on the spindle centerdrilled point. I'd understand if you didn't have the equipment..... but really maybe you should measure and see how close you are. Ignorance is bliss... Michael
__________________
Michael McGuire 83 300d 01 vw A4 TDI 66 Chevy Corsa 68 GMC V6 w/oD 86 300E
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