Yes that makes sense. They're tell the technician not to have the dial
indicator just barely touching the spindle. Actually 2 mm is just
barely touching but i guess it's enough. If that's all there is too it,
seem like a strange direction on how to use a tool when a lot of
knowledge is presumed by these manuals.
On 3/11/2013 9:09 PM, Dieselhead wrote:
THey are saying to depress the dial indicator 2 mm when attaching, so
there is room for it to go up or down. IF you don't do this and the
dial indicator is bottomed out against the rotor, you can get a false
reading. After the preload, you zero the dial, and then take your
measurement.
The 2 mm is to more or less put the dial indicator into center of scale.
the reading you want is 0.01 to 0.02 mm that is about half a
thousandth I guess. (.00039 to .00078)
http://www.benzworld.org/forums/w123-e-ce-d-cd-td/1590160-front-wheel-bearing-removal.html
(Here's the link I forgot)
I know the recommended procedure people are following for setting
front wheel bearing is to use a dial indicator and, with the base on
the rotor measure the end play of the spindle. People are
recommending half a notch if one's dial indicator is measuring
thousands.
My question is that I have a 1977-1988 Mercedes Service Manual for
Chassis and Body Series 123. In section 33.3-300/2 it states :
"6 Place tester on front wheel hub and set dial gauge to approx. 2
mm pre-load."
"7 Check end play of wheel hub by pulling and pushing on flange."
Two millimeters is 0.078".... that's a lot of rattle room.
If you go to the link, at the bottom there is a pdf file which is a
copy of the manual I am referring to. Step 6 pg 266,
What gives???
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