TM-9-2350-274-BD M109 Battlefield Damage Assessment and Repair Download
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TM 9-2350-274-BD COMMUNICATIONS SYSTEM 11-15. ISOLATION OF VOLTAGE SUPPRESSORS General Information This procedure gives instructions for the isolation and by-passing the MX-7777/MX-7778 Transient Voltage Suppressor. Limitations: ● Possible loss of all communications Personnel/Time Requied: ● 1 soldier ● 5-10 minutes Procedural Steps: CAUTION Without the transient voltage suppressor in the circuit, voltage spikes will be routed through the communications equipment and damage could occur. Use only as a last resort. 1. Removal of MX-7777/MX-7778 transient voltage suppressor: a. Locate the MX-7777/MX-7778 in the vicinity of the driver's compartment. b. Remove the CX 10613/G cable which runs between the vehicle power receptacle and the rear of the voltage suppressor. c. Remove the Bendix connector which is attached to one of two possible plugs on the top of the suppressor. d. Plug this Bendix connector directly into vehicle power receptacle. e. The suppressor is now out of the circuit. 2. Record the BDAR action taken. When the mission is complete, as soon as practicable, repair vehicle using standard maintenance procedures. 11-18