Instruction Sheet 408-6795 MTA Terminating Head 58082-1 01 SEP 11 Rev A The MTA system uses the Insulation Displacement Technique which is a method of inserting unstripped Index Pawl wire into a slotted contact beam to form a reliable Wire Inserter electrical connection between the conductor and contact. Feed Slide 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 the two slotted beams of the contact. (Note that it provides support for the contact beams when applying insertion force on the wire.) Head Adjuster - is a piston for - and regulates travel of - the wire inserter. Feed Slide - automatically positions the connector Adjuster after each termination. Index Pawl - aligns connector for insertion, and retains POSTED CONNECTORS (MTA-156) it during termination WIRE SIZE COLOR CLOSED FEED (AWG) 3. SETUP ADJUSTMENTS AND TEST CODE END THROUGH The adjuster (insertion rod) of the wire inserter is 18 Orange 641435 641522 present for wire sizes 18 through 26 AWG. If the wire 20 Yellow 641436 641523 is being inserted too deep or not deep enough inside the contact, it may be necessary to adjust the depth of 22 Red 641437 641524 the wire inserter or, if the pneumatic handle assembly 24 Natural 641438 641525 is being used, it may be necessary to adjust either the air pressure or the depth of the wire inserter. 26 Blue 641439 641526 Figure 1 3.1. For Pistol Grip Manual Handle Assembly 1. Determine the wire size, and select the 1. INTRODUCTION appropriate connector. (Connectors are color-coded This instruction sheet covers the operation and according to the wire sizes they accommodate.) maintenance of TE Connectivity MTA Terminating 2. Using a small knife, cut off the wire retainers Head 58082-1 for use in Pistol Grip Manual Handle (strain relief). This will provide a clear view for Assembly 58074-1, or Pistol Grip Pneumatic Handle inspecting the connector for a properly terminated Assembly 58075-1. Read these instructions wire in the contact. See Figure 2. thoroughly before using the heads. Refer to the instructions packaged with the pistol grip handle Wire retainers are removed to provide a connector CAUTION assembly for head installation and removal. for testing only. Do NOT use such connectors for production applications. Dimensions in this instruction sheet are in NOTE millimeters with inches in brackets . Figures and illustrations are for reference only and are not 3. Place connector in tool and make a test i drawn to scale. termination using procedure described in Section 4, TERMINATING PROCEDURE, Steps 1 through 6. Reason for revision is given in Section 8, REVISION SUMMARY. 4. Push connector out of right side of head. 5. Inspect termination in accordance with Section 5, 2. DESCRIPTION INSPECTION, Steps 1 through 6. This head is designed to terminate wires in MTA If you determine that the wire insertion depth is (Mass Termination Assembly) posted connectors with incorrect, proceed to Paragraph 3.3, Wire Insertion contacts on 3.96 mm .156 centers (MTA-156). See Depth Adjustment. table in Figure 1. 2011 Tyco Electronics Corporation, a TE Connectivity Ltd. Company TOOLING ASSISTANCE CENTER 1-800-722-1111 This controlled document is subject to change. 1 of 4 All Rights Reserved PRODUCT INFORMATION 1-800-522-6752 For latest revision and Regional Customer Service, *Trademark visit our website at www.te.com LOC B TE Connectivity, TE connectivity (logo), and TE (logo) are trademarks. Other logos, product and/or Company names may be trademarks of their respective owners. ORIGINAL INSTRUCTIONS408-6795 Production Connector Test Connector Contact (Partially Removed) Improper Cut Contact Slot Lance Wire Retainer (Removed) Front Beam Lead In Right Wrong Wrong Deformation Figure 2 reduce the wire insertion depth by approximately 3.2. For Pistol Grip Pneumatic Handle Assembly 0.20 mm .008 in Repeat Steps 3, 4, and 5 or 1. Perform the procedure outlined in Paragraph 3.1, Section 3, SETUP ADJUSTMENTS AND TEST. for Pistol Grip Manual Handle Assembly, Steps 1 through 4. Turn Clockwise to 2. Inspect termination to ensure that conductor is Reduce Wire terminated past the lead-in transition and is Insertion Depth positioned about halfway into the contact slot. See Figure 2. 3. Inspect termination to ensure 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 Adjuster Turn Counterclockwise is not inserted deep enough, increase the air for Deeper Wire pressure by 68.95 kPa 10 psi , and repeat the Insertion 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 NOTE: 1/6 Turn Equals 0.20 mm .008 in. Adjustments. 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. Figure 3 If the wire is inserted too deep, refer to the procedure 4. TERMINATING PROCEDURE (Figure 4) in Paragraph 3.3, Wire Insertion Depth Adjustment. 1. Insert connector into left side of head as 3.3. Wire Insertion Depth Adjustment indicated. Use a 9/16-in. socket wrench or box wrench when CAUTION 2. Align contact to be terminated with wire inserter. turning the adjuster. Do NOT use an open-end wrench or pliers both of these tools will deform or 3. Make sure index pawl rests between connector nick the adjuster. index ribs. Wire Too Deep in Contact Slot - If the wire is inserted 4. Insert an unstripped wire into the funnel area too deep, remove the head, and turn the adjuster 1/6 between contact and wire inserter until it bottoms on revolution CLOCKWISE (see Figure 3). This will tool base. Rev A 2 of 4