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Bell System Practices 28 Disassembly And Reassembly

At&tco standard, nontyping reperforator
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Summary of Contents for Bell System Practices 28

  • Page 2 DISASSEMBLY AND REASSEMBLY A. Removal of a 28 Nontyping Reperforator 2.01 To Remove a Nontyping Reperforator of 28 Reper• fora tor-Transmitter (28 RT) Set: Disconnect all electrical leads. (2) Remove the mounting screw that secures the tape­ alarm cable clamp.
  • Page 3 (1) Place the reperforator on the base so that the three mounting holes line up with those in the base. (2) On the 28 ASR set, be careful not to damage the code­ bar extensions or the punch-slide latches. Loosen the mounting screw that secures the anchor bracket to the punch assembly frame.
  • Page 4 Page4 to the left, grasp the cam clutch by the cam disc (not by the drum), and pull it forward while slowly rotating the cam clutch. The cam clutch should come off easily. Do not force it. 2.06 To Remove the Selector Mechanism: Unhook the function-clutch latchlever spring.
  • Page 5 ..• . . • ..• ... . • ..• . • • • Teletypewriter Tools and Maintenance Supplies..P30.301 Alphabetical Index of 28-type Equipment, Bell System P34.001 Practices and Associated 28 ASR Station Drawings.. 28 NONTYPING REPERF DIS· P34.422 ASSEMBLY Page 5 A ND RE·...

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