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Finishing and Inspecting the Terminal - 14001_130
Wedge-type proof-loading machine (dual ram)

Aviation Boatswains Mate E 3 & 2 - Aviation theories and other practices
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pounds, and is positioned in the line leading from the pump to the ram (see figs. 3-61 and 3-62). The machine operating procedure is as follows (refer to fig. 3-62). 1. Thoroughly clean the portion of cable (19) that will be in contact with the wedge set (1) during the test. Do NOT use solvent for this cleaning operation. 2. Relieve all pressure in the hydraulic system by cracking open the external load-release valve (21) to slowly release the proof-load on the gauge. NOTE Slowly releasing the gauge load will prevent rapid snapback, with resultant possible breakage of the gauge pointer. 3. Manually move the crosshead away from rams and install the crosshead terminal. 4. Remove the safety lock pin and slide the lid toward the cylinders to open. 5. Install the wedge set, Lucker Manufacturing Company Part No. 3130-143 (for testing 1 7/16-inch-diameter purchase cable). WARNING Do not lubricate the cable gripping surface or the lid sliding surface. 6. Retract the wedges by pulling on the retracting cables. Lubricate the wedge sliding surfaces with "Lubri-Plate" No. 630AAA, manufactured by Fiske Bros. Refining Company, Newark, New Jersey, before each test. 1. Wedge set 9. Connecting pin 2. Safety lock pin 10. Clevis socket 3. Grip assembly lid 11. Lock ring 4. Retracting cables 12. Cable terminal 5. Tension gauge 13. Tension rod 6. Hand hydraulic pump 14. Purchase cable 7. Hose assembly 15. Needle valve 8. Ram (cylinder) 16. External load release valve Figure 3-61.—Wedge-type proof-loading machine (single ram). 3-61







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