408-2349
3
of 5
Rev
E
4. When the tool is not in use, keep handles closed
to prevent objects from becoming lodged in the
crimping dies. Store the tool in a clean, dry area.
4.2. Lubrication
Lubricate all pins, pivot points, and bearing surfaces
with SAE 20 motor oil as follows:
Tools used in daily production - lubricate daily
Tools used daily (occasional) - lubricate weekly
Tools used weekly - lubricate monthly
Wipe excess oil from tool, particularly from crimping
area. Oil transferred from the crimping area onto
certain terminations may affect the electrical
characteristics of an application.
4.3. Periodic Inspection
A. Visual Inspection
1. Close tool handles until ratchet releases and then
allow them to open freely. If they do not open
quickly and fully, the spring is defective and must be
replaced. See Section 5, REPLACEMENT AND
REPAIR.
2. Inspect head assembly for worn, cracked, or
broken dies. If damage is evident, return the tool for
evaluation and repair. See Section 5,
REPLACEMENT AND REPAIR.
B. Ratchet Inspection
The ratchet on these hand tools should be checked to
ensure that the ratchet does not release prematurely,
allowing the crimping dies to open before they have
fully bottomed. Obtain a 0.025 [.001] shim that is
suitable for checking the clearance between the
bottoming surfaces of the dies. Then, proceed as
follows:
1. Select the appropriate crimp end and maximum
size cable for the tool.
2. Position the crimp end and cable between the
crimping dies according to Section 3, CRIMPING
PROCEDURE.
3. Holding crimp end and cable in place, squeeze
the tool handles together until the ratchet releases.
Hold the tool handles in this position, maintaining
just enough pressure to keep the dies closed.
4. Check the clearance between the bottoming
surfaces of the crimping dies. If the clearance is
.025 [.001] or less, the ratchet is satisfactory. If the
clearance exceeds 0.025 [.001], the ratchet is out of
adjustment and must be repaired. See Section 5,
REPLACEMENT AND REPAIR.
C. Gaging the Crimping Chamber
(Center Contact Section)
For Tools 69376 and 69376-1
This inspection requires the use of a plug gage
conforming to the dimensions shown in Figure 5.
Figure 5
1. TE does not manufacture or market these gages.
To gage the crimping chamber, proceed as follows:
2. Remove traces of oil or dirt from the crimping
chamber and plug gage.
3. Close the tool handles until it is evident that the
dies have bottomed; HOLD the tool in this position.
Do NOT force the dies beyond initial contact.
4. Align the GO element with the crimping chamber.
Push the element (without forcing it) straight into the
chamber. The GO element must pass completely
through the crimping chamber.
5. Align and try to insert the NO-GO element with
the same crimping chamber. The NO-GO element
may start entry but must not pass completely
through the crimping chamber.
If the crimping chamber conforms to the gage
inspection, it is considered dimensionally correct and
should be lubricated with a THIN coat of any good
grade SAE 20 motor oil. If not, the tool must be
repaired before returning it to service. See Section 5,
REPLACEMENT AND REPAIR.
Crimp height inspection is performed through the
use of a micrometer with a modified anvil,
commonly referred to as a crimp height comparator.
TE does not market crimp height comparators.
Refer to Instruction Sheet 408-7224 for detailed
information on obtaining and using a crimp height
comparator.
Proceed as follows:
1. Select a crimp end and appropriate cable from
Figure 6. The crimp end part number and cable
listed should be used for this inspection since the
dimensions listed apply only to those combinations.
2. Refer to Section 3, CRIMPING PROCEDURE,
and crimp the crimp end onto the cable accordingly.
GAGE ELEMENT DIMENSIONS
GO
NO-GO
“W” Width
(Max)
“R” Radius
(Max)
2.019-2.027
[.0795-.0798]
2.118-2.121
[.0834-.0835]
1.68
[.066]
0.838
[.033]
Suggested Plug Gage Design
For Center Contact Section of Crimping Chamber
In Tools 69376 and 69376-1
GO Dim.
NO-GO Dim.
25.4 [1.00]
W
R
