Description
U.S. Army Technical Manual TM 9-1375-204-10 for M157 Projected Charge Demolition Kit, June 1962
Item Overview
This U.S. Army operator’s manual covers the M157 Projected Charge Demolition Kit. Issued as TM 9-1375-204-10 on June 11, 1962, it was prepared for personnel responsible for inspecting, assembling, operating, and caring for this specialized minefield-clearing system. This listing is for the technical manual only. It does not include an M157 kit, explosive sections, fuzes, tank accessories, tools, weapons, or vehicles.
Publication Details
The “-10” suffix identifies this as an operator-level manual. Army terminology of the period also described this work as first-echelon maintenance. The publication states that operator responsibilities were limited to inspection, attachment of accessories, operation, and other approved care.
- Manual number: TM 9-1375-204-10
- Publication date: June 11, 1962
- Official title: Operator’s Manual, Demolition Kit, Projected Charge, M157
- Covered kit NSN: 1375-00-729-4632
- Covered kit DODIC: M444
- Manual level: Operator and first-echelon maintenance
- Issuing authority: Headquarters, Department of the Army
- Country of origin: United States
- Item included: Technical manual only
Manual Coverage
TM 9-1375-204-10 explains the M157’s construction, major sections, tank accessories, tools, and general operating principles. It also covers inspection after receipt, assembly, fuzing, installation of tank accessories, night assembly, safety, emplacement, correction of alignment problems, detonation, extreme-cold operation, basic maintenance, shipment, and emergency destruction to prevent enemy use. The manual includes photographs, diagrams, equipment tables, and references for trained military personnel.
About the M157 Demolition Kit
The M157 was a large antitank minefield-clearing system standardized by the Army in May 1960. When assembled, it consisted of 79 linked aluminum-alloy sections arranged as a nose section, 13 body sections, 62 center-loading sections, two impact-fuze sections, and a tail section. The complete assembly was approximately 400 feet long and weighed about 11,000 pounds in the manual’s original configuration. Its flexible joints helped it cross uneven ground, while internal pushing bars kept the long assembly aligned during emplacement.
M48 and M60 Tank Application
The M157 was designed to be towed and pushed by an M48 or M60-series medium tank equipped with special accessories. Chains, cables, extension bars, a drag plate, pulleys, and a gearbox connected the charge to the tank. The tank first towed the assembled kit toward the minefield and then pushed it into the desired area. Unlike later systems such as the M173 and M58 MICLIC, the M157 did not use a rocket to launch its demolition charge.
System Purpose and Function
The M157 was intended to open a path for tanks, other vehicles, and personnel through minefields containing single-impulse, pressure-type antitank mines. Its loaded sections formed a long demolition charge across the selected route. Once the kit was in place, the impact-fuze sections could be initiated from the protected tank using one of its mounted machine guns. Army guidance also described possible use against some log posts, steel rails, antitank ditches, and small concrete obstacles, although results depended on the terrain and obstacle design.
Historical Background
The M157 was developed during the early Cold War, when the Army was improving the ability of armored forces to cross defended ground. Its May 1960 standardization and use with M48 and M60-series tanks place it within the transition from Korean War-era equipment to a more mobile mechanized force. The June 1962 manual was identified as the first edition and was issued before the Army completed its full technical review. Change 1 followed on April 23, 1963, and was included in some official reprinted copies.
History of Use
The M157 supported combat-engineer training, readiness, and armored minefield-breaching doctrine. Its size and weight required vehicles, trained crews, careful assembly, and suitable terrain. Later rocket-projected systems offered a different way to place a linear charge, but the M157 remained listed in Army demolition references for decades. The available military records document its intended service role but do not establish a specific combat history for this manual or any individual kit.
Collector and Research Value
This manual is a valuable reference for studying Cold War combat engineering, M48 and M60-series tanks, minefield-clearing equipment, military demolition systems, and early Army maintenance practices. Its detailed illustrations also make it useful for museum research, archival collections, and restoration of demilitarized equipment.
Condition
This vintage military technical manual may show cover wear, edge wear, folds, yellowing, stains, writing, stamps, punched holes, loose pages, or other signs of age and storage. Printing details and condition may vary between available copies.
Ideal For
TM 9-1375-204-10 is well suited for military-document collections, historical research, museum exhibits, and displays focused on combat-engineer equipment.
- U.S. Army technical-manual collections
- M157 demolition-kit research
- M48 and M60-series tank displays
- Cold War combat-engineer exhibits
- Minefield-breaching equipment studies
- Museum and archival collections
Approx length 8", Approx width 10", Approx height .2", Approx weight .35lbs.
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