TM-9-2350-274-BD M109 Battlefield Damage Assessment and Repair Download
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TM 9-2350-274-BD COMMUNICATIONS SYSTEM 11-11. REPLACE AN/VIC-1 INTERCOM WITH SOVIET R-124 INTERCOM General Information This procedure gives installation and operating instructions for the Soviet R-124 intercom. Limitations: ● Turret cannot be rotated with drivers box secured. Personnel/Time Required: ● 1 soldier ● 1 hour Materials/TooIs: ● Handset, H-189/GR, or standard CVC helmet (each chest plate) ● Plate, chest, Soviet (one for each control box) ● Tape, electrical ● Wire, 4-conductor, ill-gauge, 5-foot length or cable, telephone, WD-1/TT, 5-foot length (two required) ● 12 Gauge wire, 3-foot (two required) ● Gun, soldering ● Solder, rosin-core Other Option(s): ● Field expedient intercom (refer to para. 11-10.) Procedural Steps: NOTE All wires in the R-124 interconnecting cables are soldered directly to the internal connecting points in the individual boxes. Use care in removal/installation. Do not disconnect individual boxes unless absolutely necessary. 1. Remove the R-124 from Soviet vehicle and install in U.S. vehicle. 2. Locate the power cable that runs from the turret wall. Remove the cable from the connection. Without removing the connector from the cable, strip back and remove approximately four inches of the outer insulation. Stagger the splices, and scrape approximately 1/4 to 1/2-inch of the inner insulation off each of the four wires in the cable. 3. Using two 12 gauge wires attach the red and white wires from the power cable to the black terminal on the bottom of the A-1 box of the R-124. Attach the blue and green wires from the power cable to the ground strap on the A-1 box. See position 6 in the intercom figure. 11-11