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408-7235 Datasheet(PDF) 3 Page - TE Connectivity Ltd |
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408-7235 Datasheet(HTML) 3 Page - TE Connectivity Ltd |
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3 / 4 page  408-7235 3 of 4 Rev H 5. MAINTENANCE AND INSPECTION PROCEDURE It is recommended that a maintenance and inspection program be performed periodically to ensure dependable and uniform terminations. Though recommendations call for at least one inspection a month, frequency of inspection depends on: — the care, amount of use, and handling of the hand tool, — the presence of abnormal amounts of dust and dirt, — the degree of operator skill, and — your own established standards. The hand tool is inspected before being shipped; however, it is recommended that the tool be inspected immediately upon arrival to ensure that the tool has not been damaged during shipment. 5.1. Daily Maintenance 1. Hand tool should be immersed (handles partially closed) in a reliable commercial degreasing compound to remove accumulated dirt, grease, and foreign matter. When degreasing compound is not available, tool may be wiped clean with a soft, lint-free cloth. DO NOT use hard or abrasive objects that could damage the tool. 2. Make certain that the retaining pins are in place and that they are secured with retaining rings. 3. All pins, pivot points, and bearing surfaces should be protected with a THIN coat of any good SAE 20 motor oil. DO NOT oil excessively. 4. When the tool is not in use, keep handles closed to prevent objects from becoming lodged in the jaws. Store the tool in a clean, dry area. 5.2. Periodic Inspection A. Lubrication Lubricate all pins, pivot points, and bearing surfaces with SAE 20 motor oil as follows: Tool used in daily production - lubricate daily Tool used daily (occasional) - lubricate weekly Tool 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. B. Visual Inspection 1. Close the tool handles until the 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 6, REPLACEMENT AND REPAIR. 2. Inspect the jaws for worn, cracked, or broken areas. If damage is evident, return the tool for evaluation and repair. See Section 6, REPLACEMENT AND REPAIR. C. Crimp Height Inspection 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 manufacture or market crimp-height comparators. Detailed information on obtaining and using crimp- height comparators can be found in Instruction Sheet 408-7424. Proceed as follows: 1. Select a receptacle and maximum size wire for each crimping chamber. 2. Refer to Section 3, CRIMPING PROCEDURE, and crimp the receptacle accordingly. 3. Measure the wire barrel crimp height as shown in Figure 4. If the crimp height conforms to that height, the tool is considered dimensionally correct. If not, return the tool for evaluation and repair. See Section 6, REPLACEMENT AND REPAIR. Figure 4 D. Ratchet Inspection 1. Select a receptacle and maximum size wire for the tool. 2. Position the receptacle and wire between the jaws as described in Section 3, CRIMPING PROCEDURE. 3. Hold the wire in place and squeeze the handles until the ratchet releases. Hold the handles in this position, maintaining just enough tension to keep the jaws closed. HAND TOOL MAXIMUM WIRE SIZE (AWG) CRIMP HEIGHT ±0.10 [±.004] 90165-1 18 1.75 [.069] 14 1.80 [.071] 90166-1 18 1.40 [.055] 90166-2 Position Point on Center of Wire Barrel Opposite Seam Modified Anvil Crimp Height (See Table) |
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