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4--21028--4 Datasheet(PDF) 2 Page - Tyco Electronics

Part No. 4--21028--4
Description  Pneumatic CERTI-CRIMP Tool Holder
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Maker  MACOM [Tyco Electronics]
Homepage  http://www.macom.com

 2 page
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408- 4303
Pneumatic CERTI- CRIMP Tool Holder Assemblies 356302- 1, 356303- 1, and 1673611- 1
Rev F
of 4
Tyco Electronics Corporation
on the bottom of the tool holder. Tighten locking
ring to fully secure the tool holder.
When tool holder is properly installed, the tool
holder locking ring should be butted against the
stop ring, and threads of the tool holder should
not be visible. If not properly installed, check that
correct assembly of cam and tool holder is being
used and that they are aligned properly.
6. Rotate the tool holder one full turn in each
direction and note that the tool holder locking ring
rotates with the holder.
To avoid personal injury, periodically check that
tool holder locking ring is tightly securing the tool
After installation, ALWAYS ensure that the tool
holder pivot pins are fully tightened to avoid
personal injury or damage to the tool.
Removal is the reverse of installation.
7. For instructions on installing the crimping head
(and, if applicable, die set), refer to the instruction
sheet packaged with the head.
The tool holder assembly features an adjustable
eccentric and a ratchet mechanism with a range of
settings. The position of the pawl ensures that the
tool completes the cycle. The eccentric controls the
amount of cam pressure exerted on the crimping
head jaws or dies during the crimping procedure.
Although the ratchet is preset prior to shipment, it is
important that the crimp height be verified. Also,
general use and subsequent wear may cause the tool
to go out of adjustment. It is recommended that the
crimp height be inspected, and adjusted if necessary,
on a regular basis by quality control personnel.
1. Connect pneumatic tool to an adequate air
supply between 620 to 690 kPa [90 to100 psi]. For
specific information on air line requirements and air
hose installation, refer to the instructions packaged
with the pneumatic tooling assembly.
2. Place a contact on the crimp nest and place a
properly prepared wire of the correct size into the
wire barrel.
3. Place a 0.025--mm [.001--in.] shim between the
crimping jaws where the jaws bottom against each
4. Slowly crimp the contact onto the wire until the
crimping jaws or dies bottom on the shim. Check
that the ratchet releases after the jaws or dies
To avoid personal injury, DISCONNECT TOOL
FROM AIR SUPPLY before adjusting the pawl
position. After the adjustment, ALWAYS ensure
that the tool holder pivot pins are fully tightened
to avoid personal injury or damage to the tool.
5. If the ratchet releases before the jaws or dies
bottom, loosen the three securing screws (see
Figure 1), remove the eccentric adjustment screw
and rotate the eccentric clockwise to a higher
setting. Repeat as required.
If the ratchet does not release and the tool will
not return, slowly actuate the tool until the force
of the cam teeth is off the pawl, then push on the
pawl with a small screwdriver until the pawl is
released from the teeth, release the tool handle
and allow the tool to return. See Figure 3.
Figure 2
Tool Holder
Pneumatic Tooling
Assembly (Ref)
Head (Ref)

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