408-1758 Datasheet, PDF (4/7 Pages) TE Connectivity Ltd – Crimping Dies 48752-1 through 48755-1

408-1758
Figure 4
4.2. Visual Inspection
Visually inspect the die closure surfaces for flattened,
broken, pitted, or chipped conditions. Although dies
may gage within permissible limits, worn or damaged
die closure surfaces are objectionable and can affect
the quality of the crimp. Examples of possible
damaged die surfaces are shown in Figure 5.
Broken
Corner
1. Clean oil or dirt from the bottoming surfaces,
die closure surfaces, and plug gage elements.
2. Remove two socket head cap screws and
locator from the moving die. See Figure 8,
Detail A. This will provide access to the wire
barrel dies for plug gaging.
3. Assemble stationary and moving dies so that
wire barrel dies are bottomed, but not under
pressure. See Figure 8.
Pitted
Chipped or
Flattened
Edge
4. With wire barrel dies bottomed, inspect the
wire barrel crimp die closure using the proper
plug gage. Hold gage in straight alignment with
the die closure and carefully try to insert, without
forcing, the GO element. See Figure 8, Detail A.
The GO element must pass completely through
the wire barrel crimp die closure.
5. Try to insert the NO-GO element. The NO-GO
element may enter partially, but must not pass
completely through the wire barrel die closure.
Figure 5
4.3. Plug Gage Inspection
Every die set is inspected and tested for proper die
closure dimensions before packaging. An inspection
should be performed periodically to check the die
closure for excessive wear. A suggested gage design
and the GO and NO-GO dimensions of the plug gage
elements are shown in Figures 6 and 7. The following
procedure is recommended for inspecting the die set.
6. Re-install locator and secure with the two
socket head cap screws.
7. Loosen socket head cap screws from both
stationary and moving insulation dies and move
pin-keys all the way out so that insulation
crimping sections of dies are in the tight position.
See Figure 8, Detail B.
8. Press and hold insulation die down against pin-
key, and tighten the socket head cap screws.
Rev D
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