illustrates an acceptable face. Crop and repour
if six or more cavities are found.
2.
A cavity up to 1/8-inch wide and 1/8-inch deep
caused by breaching of several wires must
NOT be in the center of the zinc face within the
area of 3/4-inch diameter. An acceptable face is
shown in view B. A 1/8-inch cavity by 1/8-inch
cavity caused by any other factor than
breaching
wires
is
not
acceptable.
This
breaching is several wires coming together at
the surface, which does not permit the zinc to
fill the area. These allowable cavities are the
result of pouring, and not that of a pull test.
Inspect around the base of the terminal for a
penetration of zinc. This penetration must be present to
have an acceptable terminal. It is also a good indication
of a well-poured terminal. The wires of the strands of
the wire rope below the terminal must not show any
deformity due to having been held too tightly in the vise
during the pouring and finishing operations.
Testing the Terminal
During an arrestment, the wire rope system must
take a very high impact load; therefore, all fittings of
the system must be carefully poured. It is imperative
that the fitting be strong and well made. To determine
their condition and strength, the terminals must be
tested for soundness of the poured joint.
Terminals poured by a naval activity or by
personnel aboard ship are tested for reliability. The
cable terminal proof-loading machine is a self-
3-56
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
ABEf0362
1. Wedge set
2. Safety lock pin
3. Grip assembly lid
4. Retracting cables
5. Tension gauge
6. Hand hydraulic pump
7. Hose assembly
8. Ram (cylinder)
9. Connecting pin
10. Clevis socket
11. Lock ring
12. Cable terminal
13. Tension rod
14. Purchase cable
15. Needle valve
16. External load release valve
Figure 3-62.—Wedge-type proof-loading machine (single ram).
