Description
U.S. War Department Technical Manual TM 9-1245 for 37mm M3 and M3A1 Antitank Guns and M4 and M4A1 Carriages, February 1943 (REPRINT)
Item Overview
This U.S. War Department technical manual covers ordnance maintenance for the 37mm Antitank Guns M3 and M3A1 and Carriages M4 and M4A1. Issued on February 6, 1943, TM 9-1245 contains 138 illustrated pages prepared for military maintenance personnel. This listing is for the technical manual only. It does not include a gun, carriage, ammunition, vehicle, tools, or accessories.
Publication Details
This World War II publication replaced the January 15, 1941 edition, Change 1 dated September 10, 1942, and Technical Bulletins 1245-1 and 1245-2. The revised manual added information about the M3A1 gun and M4A1 carriage, expanded maintenance instructions, and included more illustrations.
- Manual number: TM 9-1245
- Publication date: February 6, 1943
- Title: Ordnance Maintenance—37-mm Antitank Guns M3 and M3A1, and Carriages M4 and M4A1
- Manual type: Ordnance maintenance
- Length: 138 illustrated pages
- Issuing authority: War Department, United States
- Historical period: World War II
- Item included: Technical manual only
Manual Coverage
TM 9-1245 provides detailed instructions for disassembly, assembly, inspection, maintenance, and repair. It explains the gun, breech mechanism, recoil system, firing controls, trails, wheels, and other carriage parts. Additional sections cover lubrication, storage, special maintenance, and care in unusual climates. The illustrations help identify components and show correct workshop procedures.
About the M3 and M3A1 Antitank Guns
The M3 was a single-shot, flat-trajectory antitank gun with a vertical sliding breechblock. Developed during the late 1930s, it became the first dedicated antitank gun placed in regular U.S. Army service. The M3A1 was a modified version with threads at the muzzle for a gas deflector. Although the deflector was later removed from use, guns made with the threaded tube kept the M3A1 designation.
About the M4 and M4A1 Carriages
The M4 and M4A1 were low-profile, split-trail carriages built to make the 37mm gun mobile and stable. Pneumatic tires allowed the weapon to be towed on roads or across rough ground. A hydrospring system controlled recoil, while hand controls allowed one gunner to aim, elevate, traverse, and fire the weapon. The M4A1 introduced revised controls and other changes intended to make operation simpler and faster.
Weapon-System History
The 37mm M3 was designed when armies still expected light antitank guns to defeat most armored vehicles. Its small size, accuracy, and mobility made it useful during the early years of World War II. As German tanks gained thicker armor, the M3 became less effective in Europe and was replaced there by the larger 57mm M1 antitank gun. Its light weight and easy movement still made it valuable in other theaters.
History of Use
U.S. Army and Marine Corps units used the 37mm M3 and M3A1 in early World War II campaigns, including the Philippines, North Africa, and the Pacific. The gun remained effective against many lighter Japanese tanks. Crews also fired high-explosive and canister ammunition against bunkers, pillboxes, troops, and close-range attacks. Its service on Guadalcanal, Kwajalein, and other Pacific battlefields gave the weapon an important place in American wartime history.
Collector and Research Value
TM 9-1245 is a useful reference for collectors, museums, restorers, reenactors, and historians studying U.S. antitank equipment. It documents the construction and maintenance of an important early-war weapon while showing how Army ordnance personnel kept guns ready for service under field conditions.
Condition
This 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. Please check the pictures for the general condition of the item.
Ideal For
This manual is well suited for collections, research projects, restorations, and displays related to American weapons and World War II history.
- U.S. Army technical-manual collections
- 37mm M3 and M3A1 gun restoration
- M4 and M4A1 carriage research
- World War II ordnance displays
- Pacific War history collections
- Museum and archival reference libraries
Approx length 6", Approx width 9", Approx height .3", Approx weight .5lbs.
Pictures are stock images of our inventory. Unless otherwise noted, you will not be receiving the exact item shown in the pictures. The pictures are representative of the item’s general condition. The item you receive might be slightly better, or worse, condition than was shown in the pictures.
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