?2011 tyco electronics corporation, a te connectivity ltd. company all rights reserved *trademark te connectivity, te connectivit y (logo), and te (logo) are trademarks. other logos, product and/or company names may be tradem arks of their respective owners. 1 of 4 instruction sheet tooling assistance center 1-800-722- 1111 product information 1-800-522-6752 this controlled document is subject to change. for latest revision and regional customer service, visit our website at www.te.com loc b 408-6795 mta terminating head 58082-1 01 sep 11 rev a figure 1 1. introduction this instruction sheet covers the operation and maintenance of te connectivity mta terminating head 58082-1 for use in pistol grip manual handle assembly 58074-1, or pistol grip pneumatic handle assembly 58075-1. read these instructions thoroughly before using the heads. refer to the instructions packaged wit h the pistol grip handle assembly for head installation and removal. dimensions in this instruction sheet are in millimeters [with inches in brackets]. figures and illustrations are for reference only and are not drawn to scale. reason for revision is given in section 8, revision summary. 2. description this head is designed to terminate wires in mta (mass termination assembly) posted connectors with contacts on 3.96 mm [.156] centers (mta-156). see table in figure 1. the mta system uses the insulation displacement technique which is a method of inserting unstripped wire into a slotted contact beam to form a reliable electrical connection between the conductor and contact. after the head is inserted into the pistol grip handle assembly, it serves as a guide and support for the connector during termination. features of the head (see figure 1) and their functions are as follows: wire inserter - forces wire into th e two slotted beams of the contact. (note that it provides support for the contact beams when applying insertion force on the wire.) adjuster - is a piston for - and regulates travel of - the wire inserter. feed slide - automatically positions the connector after each termination. index pawl - aligns connector for insertion, and retains it during termination 3. setup adjustments and test the adjuster (insertion rod) of the wire inserter is present for wire sizes 18 through 26 awg. if the wire is being inserted too deep or not deep enough inside the contact, it may be necessary to adjust the depth of the wire inserter; or, if the pneumatic handle assembly is being used, it may be necessary to adjust either the air pressure or the dept h of the wire inserter. 3.1. for pistol grip manual handle assembly 1. determine the wire size, and select the appropriate connector. (connectors are color-coded according to the wire sizes they accommodate.) 2. using a small knife, cut off the wire retainers (strain relief). this will provide a clear view for inspecting the connector for a properly terminated wire in the contact. see figure 2. wire retainers are removed to provide a connector for testing only. do not use such connectors for production applications. 3. place connector in tool and make a test termination using procedure described in section 4, terminating procedure, steps 1 through 6. 4. push connector out of right side of head. 5. inspect termination in accordance with section 5, inspection, steps 1 through 6. if you determine that the wire insertion depth is incorrect, proceed to paragraph 3.3, wire insertion depth adjustment. wire size (awg) posted connectors (mta-156) color code closed end feed through 18 orange 641435 641522 20 yellow 641436 641523 22 red 641437 641524 24 natural 641438 641525 26 blue 641439 641526 index pawl feed slide wire inserter adjuster head note i caution ! original instructions
408-6795 2 of 4 rev a figure 2 3.2. for pistol grip pneumatic handle assembly 1. perform the procedure outlined in paragraph 3.1, for pistol grip manual handle assembly, steps 1 through 4. 2. inspect termination to ensure that conductor is terminated past the lead-in transition and is positioned about halfway into the contact slot. see figure 2. 3. inspect termination to en sure that insulation is 2.03 to 2.54 mm [.080-.100 in.] beyond the front contact beam. 4. if, upon inspection, it is determined that the wire is not inserted deep enough, increase the air pressure by 68.95 kpa [10 psi], and repeat the termination and inspection procedure. continue in this manner until either the proper insertion depth is obtained, or the air pressure is set to 482.6 kpa [70 psi]. if the proper insertion depth is not reached at 482.6 kpa [70 psi], return the air pressure to 275.8 kpa [40 psi] and follow the procedure in paragraph 3.3, wire insertion depth adjustment. if the wire is inserted too deep, refer to the procedure in paragraph 3.3, wire insertion depth adjustment. 3.3. wire insertion depth adjustment use a 9/16-in. socket wrench or box wrench when turning the adjuster. do not use an open-end wrench or pliers; both of these tools will deform or nick the adjuster. wire too deep in contact slot - if the wire is inserted too deep, remove the head, and turn the adjuster 1/6 revolution clockwise (see figure 3). this will reduce the wire insertion depth by approximately 0.20 mm [.008 in.]. repeat steps 3, 4, and 5 or section 3, setup adjustments and test. figure 3 4. terminating procedure (figure 4) 1. insert connector into left side of head as indicated. 2. align contact to be terminated with wire inserter. 3. make sure index pawl rests between connector index ribs. 4. insert an unstripped wire into the funnel area between contact and wire inserter until it bottoms on tool base. test connector wire retainer (removed) contact (partially removed) production connector lance improper cut right wrong wrong lead in contact slot front beam deformation caution ! turn clockwise to reduce wire insertion depth turn counterclockwise for deeper wire insertion adjuster note: 1/6 turn equals 0.20 mm [.008 in.] adjustments.
408-6795 3 of 4 rev a figure 4 5. depress trigger (or squeeze cam handle) of pistol grip handle assembly and hold it until inserter bottoms or ratchet releases. 6. release trigger (or cam handle). the inserter will retract and the feed slide will automatically advance connector to next contact position. the index pawl will move up and down as the connector is automatically advanced through the head. however, if movement is obstructed, or if desirable, the index pawl can be depressed and the connector moved manually out the right side of the head. 7. repeat steps 2 through 6 until all contacts have been terminated. 8. inspect each terminat ion according to the procedures in section 5, inspection. 5. inspection (figure 2) inspect each termination to ensure the following: 1. conductor is terminated past the lead-in transition and about halfway in the contact slot. 2. insulation is 2.03 to 2.54 mm [.080 to .100 in.] beyond the front contact beam. 3. wire is not bottomed in contact slot. 4. contact beams are not deformed. if damage is apparent, replace contacts in accordance with the instructions packaged with the connector. 5. insulation of wire is not nicked or cut in any area other than the two wire slots. 6. wire extends below the strain-relief features of connector. 6. tool certification the procedures described in the following text have been established to ensure quality and reliability of te terminating tools. a brief ch eck should be made daily, and a more detailed inspection should be scheduled by your quality control group. 6.1. daily maintenance each operator should be aware of, and responsible for the following: 1. remove dust, moisture, and other contaminants with a clean brush, or soft, lint-free cloth. do not use objects that could damage the tool. 2. make sure all components are in place and properly secured. (if not, return the tool to your supervisor.) 3. actuate handle assembly to ensure mechanisms inside head move smoothly. 6.2. quality control maintenance regular inspections should be performed by your quality control personnel with a record of quality control inspections remain ing with the personnel responsible for the tool. te recommends one inspection a month; however, operation training and skill, amount of use, ambient working conditions, and your company?s established standards are all factors in establishing frequency of inspections. these inspections should be done in the following sequence: 1. remove any accumulated film with a suitable cleaning agent that will not affect plastic material. caution: do not push the connector through the tool from t he right side. otherwise, damage to the slide spring may result. wires index rib tool base slide spring left side of head index pawl note i
408-6795 4 of 4 rev a 2. make sure all components are in place and properly secured. see figure 5. 3. make a few test terminations and inspect the termination in accordance with section 5, inspection. 4. check for chipped, cracked, worn, or broken areas. if damage is evid ent, repair is necessary. see section 7, repair. 7. repair customer replaceable parts are listed in figure 5. parts and additional tools can be purchased from: customer service (038-035) tyco electronics corporation po box 3608 harrisburg pa 17105-3608 8. revision summary ? updated document to corporate requirements ? new logo figure 5 4 5 6 1 2 3 7 8 9 10 33.32 [1.312] 28.58 [1.125] 80.98 [3.188] weight: 0.085 kg [3 oz] customer replaceable parts item part number description qty per tool 1 312392-1 head 1 2 22278-6 spring, compression 1 3 310215-3 pawl, index 1 4 21028-6 pin, slotted spring 1 5 310212-4 feed slide subassembly 1 6 312393-1 inserter, wire 1 7 3-21028-2 pin, slotted spring 1 8 312148-4 rod, insertion 1 9 22488-5 spring, compression 1 10 312149-1 adjuster 1
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