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139
Dukane Manual Part No. 403–566–01
Section 13 – Care & Maintenance
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CAUTION
Use extreme care to keep
the part level when moving
it across the emery cloth. Be
careful not to tilt the part.
An uneven mating surface
could leave the mating sur-
face inoperative.
Surface flatness is more im-
portant than surface finish.
moved across the emery cloth. Complete a
second stroke across the cloth just like the first.
7. Keep the element's surface flat against the
emery cloth and turn it 120° (one–third of a
complete rotation) so the thumb covers the next
spanner wrench hole. Again move the part
twice across the emery cloth as covered in the
previous step.
8. Give the part a final one–third turn and repeat
the two strokes described in Step 6.
9. Reexamine the mating surfaces. Repeat Steps
6 through 8 until the corrosion has been re-
moved.
10. Clean any grit from the resurfaced element and
the stud mounting threads using a clean cloth
or paper towel.
11. If you had to remove the mounting studs, they
need to be reinserted. Before they are rein-
serted, it is necessary to ensure proper thread
engagement.
a. Inspect and clean the stud.
b. Clean the threaded hole with a clean cloth.
c. Thread the stud into the hole. Tighten the
stud to the torque specifications given in
Table 10—II.
12. Reassemble the stack and install it using the
procedure in Section 10 using Figures 10–6
and 10–7 as guides.
13. Complete the Operational Test in Section 11.
CAUTION
It is important to perform
only two strokes each
time the component is ro-
tated. Performing more
than two strokes affects
whether the surface re-
mains flat. It is important for the mat-
ing surface to maintain its
perpendicularity in relationship to the
component's centering axis. If this re-
lation between the surface and the
axis is altered, the welding system
may become inoperative.
NOTE
If the studs are overtightened, the threads may
deform. Removing a stud that has been over-
tightened could damage the threads in the
horn/booster. If this should happen, retap the
horn/booster threads and replace the stud with
a new one.
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Figure 13–7 Manual Resurfacing