You want a torque angle gauge
https://www.google.com.au/search?q=Torque+Angle+Gauge&hl=en&safe=off&client=ubuntu&hs=NK4&tbo=u&channel=fs&source=univ&tbm=shop&sa=X&ei=RuXcUJe6KY-6iAeFm4CwDA&ved=0CFYQrQQ&biw=1920&bih=909
Have you looked at the special tools required
for the job? Sometimes MB will not show the tool
in the instructions but lists part number and
picture further down in the instructions.
Generally MB job instructions are a little vague
and assume basic mechanical knowledge and access
to proper tools. The genuine factory
instructions where never meat for shade tree
mechanics. That's where the aftermarket manual
makers come in.
Hendrik
who has genuine factory manuals
Those gauges presuppose that you have something
to anchor the dial to. THe one with the flexible
magnet is particularly suspect. How much can
that flexible holder move and change the angle by
5-10ยบ?
I had a masonite gauge about 6" dia for timing
the camshaft on OM621 engines by the book. To
get within 1/2 degree, you really need somewhere
around 6" dia to be reliable. those gauges look
small, like 2-2/1/2" dia, so I'd guess they are +
or - 2-3 degrees. I can do that well by lining
up perpendicular to the head and ending parallel
to the head. Over-reliance on flakey gauges by a
parts changer is worse than what a reasonable
mechanic with some common sense can do.
I have always read the factory manuals to figure
out what they are trying to accomplish, then
figure out some way to do the same thing without
the (expensive) factory tools, but with tools I
have or common tools I can use for something else.
Disselhead, who also has factry manuwells, but no angle gage.
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