TM-9-2350-275-BD Battlefield Damage Assessment and Repair for M113 Family Download
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TM 9-2350-275-BD APPENDIX B SECTION IV. Welding Expedients B-4. CONTROLLED AMPERAGE General Information Battlefield repairs requiring welding can be done by using the auxiliary generator (Little Joe) from the M88 or generator recovery vehicle if a regular welder is not available. Limitations: ● Possible degraded armor protection Materials/Tools: ● Auxiliary generator (24 vdc) ● Control unit from a welder or similar control ● Welders helmet and gloves ● Welding rod, coat hangers, or barbed wire ● Heavy gauge cable (2.0 gauge or larger) ● Vise grips or clamps ● Fuel line Personnel/Time Required: ● 2 soldier ● 1-2 hours Other Options ● Use uncontrolled amperage ● Weld using vehicle battery power Procedural Steps: 1. Remove auxiliary generator from M88 recovery vehicle and place close to area to be welded. Connect heavy gauge cables to (+) and (-) output posts. Also connect control unit to (+) and (-) output posts. Tighten terminal securely. 2. Connect negative (-) cable to tank hull with clamp close to area to be welded. Connect welding rod to positive (+) cable with vise grips. Insulate vise grips with gloves, rags, or several layers of dry paper. WARNING Use welder’s helmet to protect eyes and face from arc. Do not touch exposed cable or vise grips with bare hands; metal gets very hot. Do not perform this task in rain or on wet ground because of electrical shock hazard. B-9