It is unlikely that you can straighten the wiper back to its original accuracy. If bent it
should be replaced as the grinder will retain grounds.
Remove the static wiper.
Included with the
tools is a small tool similar to a hex (or Allen)
wrench that fits into the retaining screw for
the "static wiper". This wrench is of the
"Torx" type, and has splines that fit into the
screw head. The static wiper is fastened to
the bottom of the top funnel right adjacent to
the outside of the flat burrs, and wipes
grounds off the burrs as they rotate. The
whole area around the retaining screw will
be covered in dense grounds that require
brushing out of the way.
Remove the moving wiper.
In the center of the rotating burr assembly is a stainless
steel socket hex screw. This retains the moving wiper to the rotating burr assembly and
also holds the rotating burr assembly to the shaft. There is a hole in the shaft near the
top plate of the grinder. The pin that came with the grinder tools fits this hole and is
used to hold the shaft while removing the screw. Remove the screw. If the grinder is
sitting vertical rather than on its back, be certain that the rotating burr assembly does
not fall.
Remove the burr assembly from its shaft
. You now have access to the two flat burrs
and the conical burrs.
Reassembly
is simply going through this procedure
in reverse, with some cautions.
To work properly, the burrs need to be carefully
aligned so certain surfaces must be VERY clean.
For the top burrs, the surfaces are obvious: the
mounting face in the top funnel, and all mating
surfaces of the top conical and top flat burrs. For the
bottom burrs, there are four surfaces to clean. The
controlling surface on the shaft is the round face
(visible in the photograph at left) that abuts the top of
the inner conical burr.
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