and when locating using the bomb sight to locate on the center stud not the
head O.D. due to the fasteners poor head to shank concentricity.
2.7.3
Blind Fasteners:
Blind Cherry Fasteners, flush and protruding head, are removed in a simple
one step process with the E-Drill. The process of weakening the lock collar
wall and creating a fracture point within the head is accomplished with one
cut. The Cherry setting in the Hand Held Terminal, and accurate location of
the hand-tool to the fastener head will accommodate ease of Cherry Rivet
removal. Cherry fasteners have a different set of parameters than other more
standardized fasteners due to the nature of their construction. Known as an
extremely high strength fastener they have a complex structure, therefore the
set up will be different. Pay particular attention to the electrode
recommendation on the terminal, since typically nominal Cherry fasteners
require an oversize electrode.
Once the cut is completed, a parallel punch which equals the fastener nominal
stem size should be used. One simple punch with a hammer will shear the
fastener head and knock stem and sleeve out together. DO NOT use an anti-
skid punch or punch-buddy for blind fastener removal.
2.8 Electrode Replacement:
Electrode replacement is necessary when either:
A)
The current electrode is consumed as indicated by a flashing green light on
the hand-tool and a message on the Touch-Screen Display, or…
B)
When changing to a different fastener with different stem diameter or
oversize type.
CAUTION
Each FASTENER SIZE and diameter, and oversize fastener has a matching electrode
SIZE. When changing to a different stem diameter or oversize type Fastener, the
proper corresponding ELECTRODE MUST BE INSTALLED FOR SUCCESSFUL
SYSTEM OPERATION.
To replace an electrode, the procedure is as follows:
1.
Unlock the E-Drill Adapter by twisting in a counter-clockwise direction (when
viewed from the front of the E-Drill), then pull the adapter straight off.
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