
BTT-ST family of BobTail® Hydraulic Tools
(HK1120)
Alcoa Fastening Systems
9
GENERAL
■ Operators should receive training from qualified
personnel.
■ Do not bend tool to free if stuck.
■ Tool should only be used to install fasteners.
■ NEVER use as a jack/spreader or hammer.
TO INSTALL A BOBTAIL FASTENER:
1. Check work and remove excessive gap. (Gap is the
space between sheets. Gap is excessive if not
enough pintail sticks through the collar for the nose
assembly puller to grab onto).
2. Put BOBTAIL pin in hole.
3. Slide BOBTAIL collar over pin. (The flanged end of
the collar must be towards the pieces being fastened.)
4. Push nose assembly onto the pin until the nose
assembly puller stops against the pin. Tool and nose
assembly must be held at right angles (90 degrees) to
the work.
5. Depress tool trigger to start installation cycle.
6. When forward motion of nose assembly anvil stops,
release trigger. Tool will go into its return stroke and
push off the installed fastener.
7. The tool and nose assembly are ready for the
next installation cycle.
O
O
PERATING
PERATING
I
I
NSTRUCTIONS
NSTRUCTIONS
For safe operation. Please read completely
WARNING: To avoid severe personal injury,
wear approved eye and ear protection.
Ensure adequate clearance for Operator’s
hands before proceeding with fastener
installation.
WARNING: Do not pull on a pin without
placing fastener/collar in a workpiece. This
condition can cause pin to eject with great
velocity and force if the pintail breaks off or
teeth/grooves strip. This may cause severe
personal injury.
CAUTION: Remove excess gap from between
the sheets. This permits enough pintail to
emerge from collar for ALL puller teeth to
engage with pintail. If ALL teeth do not
engage properly, jaws will be damaged.
WARNING: To avoid pinch point, never place
hand between nose assembly and work
piece.
WARNING: Only use compatible equipment
with this tool.
Refer to Figure BB, Switch Housing Assembly Drawing
on page 12 for identification of Lockdown Screw and
Limit Switch Adjustment Screw.
NOTE: It is important
to ensure that the face of the micrometer is firmly
against the Puller Head, and the micrometer depth
pin is in contact with the Actuator Rod when meas-
uring.
1. Check to see where the Limit Switch is set using the
Light Box and the Depth Micrometer.
2. Using an Allen wrench, loosen the Lockdown Screw.
3. To increase the switch setting turn the Limit Switch
Adjustment Screw counterclockwise; to decrease it,
turn it clockwise.
4. Adjust the switch to the specification of .485”. You will
notice the Light Box light will come on once the
switch has been made.
5. Tighten the Lockdown Screw.
NOTE: After tighten-
ing the Lockdown Screw, verify the adjustment
again by measuring with the depth micrometer. In
some cases, because of the tight tolerance, it is
possible for the adjustment to be jarred during
tightening the Lockdown Screw.
6. Once adjusted to the specification of .480”-.490”, dis-
connect the Light Box and reconnect the system. The
tool is now ready to drive fasteners.
TOOLS NEEDED:
• Controller or Light Box • Depth Micrometer • Allen Wrench
Light Box
Light Box
(Styles
(Styles
may vary)
may vary)
Hold micrometer face
Hold micrometer face
firmly to Puller face when
firmly to Puller face when
measuring.
measuring.
L
L
IMIT
IMIT
S
S
WITCH
WITCH
A
A
DJUSTMENT
DJUSTMENT
Содержание ALCOA BOBTAIL BTT25-ST
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