Description
TM 9-2300-216-10 Technical Manual for 175mm M107 Gun and 8-Inch M110 / M110A1 Howitzers – July 1977
Item Overview
This July 1977 U.S. Army technical manual covers the M107 175mm Self-Propelled Field Artillery Gun and the M110 and M110A1 8-Inch Self-Propelled Howitzers. TM 9-2300-216-10 is the operator's publication for these heavy artillery vehicles. It brings crew-level information for three related systems into one reference. Its coverage includes the original short-barrel howitzer and the later M110A1, making this dated publication useful for collectors studying the Army's heavy artillery fleet during the 1970s.
Publication Details
The publication's identifying details and covered vehicles are listed below. These National Stock Numbers identify the complete artillery vehicles, rather than the manual itself.
- Manual Number: TM 9-2300-216-10
- Publication Type: Technical Manual, Operator's Manual
- Date: July 1977
- Issuing Authority: Headquarters, Department of the Army
- M107 175mm Self-Propelled Field Artillery Gun: NSN 2350-00-436-6635
- M110 8-Inch Self-Propelled Howitzer: NSN 2350-00-439-6243
- M110A1 8-Inch Self-Propelled Howitzer: NSN 2350-01-013-3914
Function and Contents
Written for vehicle operators and artillery crews, TM 9-2300-216-10 addresses the controls, equipment, and basic care needed at crew level. Illustrated subjects in the operator's manual series include driver's instruments, gunner's controls, sighting equipment, the hydraulic loader and rammer, recoil equipment, travel locks, and the rear stabilizing spade. Vehicle illustrations also identify the powerplant, track-related equipment, and fire extinguishers. Together, these subjects explain how the tracked carrier and artillery mount work as one system. The manual is a useful reference for identifying crew stations, equipment locations, and the tasks assigned to soldiers handling these vehicles.
Publication History
The TM 9-2300-216-10 series began in June 1962 with operator coverage for the M107 and M110. The July 1977 publication includes the M110A1, reflecting the growth of that equipment family. Army documentation from 1977 shows how technical publications supported the upgrade program: manuals and firing aids were delivered with conversion kits so units could use their modified equipment promptly. Separate maintenance and repair-parts manuals supported other levels of service. This operator's publication belongs to that wider system of Army equipment records and crew guidance.
Documented Applications
The documented applications are the full-tracked M107 gun vehicle, the original M110 howitzer vehicle, and the upgraded M110A1 howitzer vehicle. Each model has its own stock number even though the vehicles share a common design. The M110A1 designation is especially important when matching this publication to a vehicle, since its longer cannon differs from the original M110's shorter weapon. Coverage of all three models makes the manual relevant to collections and displays showing the relationship between the gun vehicle and both howitzer versions.
Equipment History
The M107 and M110 were developed as part of the Army's early 1960s artillery modernization. The M110 entered service in 1963. Their shared diesel-powered chassis carried the driver and powerplant toward the front, with the artillery mount and crew working area at the rear. An open layout gave crews access to the weapon but left them exposed to weather and enemy fire. The 1970s improvement program reused existing carriers for the M110A1. Army reports also described depot work intended to improve reliability and ease of maintenance, extending the usefulness of the basic vehicle design.
Weapon-System Background
The M107's 175mm gun emphasized long-range support, reaching nearly 33 kilometers, or about 20 miles. The original M110's 8-inch howitzer fired a roughly 200-pound projectile to nearly 17 kilometers, or about 10.5 miles, and was noted for its accuracy. The M110A1 introduced the longer M201 cannon and the M139 direct-fire telescope as part of the improvement program. This advanced the 8-inch system while retaining the familiar carrier. Further development led to the M110A2 with a muzzle brake. These differences explain why model designations matter when studying the weapons and their supporting publications.
History of Use
M107 guns and original M110 howitzers served in Vietnam, where they supported ground forces from defended artillery positions and fire support bases. Some units operated mixed batteries of 175mm guns and 8-inch howitzers. The M110A1 belongs to the later modernization period: a 1977 Army report identified the 3rd Battalion, 6th Field Artillery, 1st Infantry Division, at Fort Riley, Kansas, as the first unit equipped with the upgraded howitzer. Training, vehicle care, and crew instruction remained central to service with these heavy systems. Through successive models, the M110 family served the Army and Marine Corps for more than 30 years.
Ideal For
This manual suits collections focused on heavy artillery, tracked military vehicles, or Army technical publications. Its period equipment coverage can support historical research, exhibit interpretation, and model-building projects that require careful attention to the correct vehicle version.
- Collectors of U.S. Army technical manuals and military publications
- Researchers studying Cold War artillery and 1970s equipment upgrades
- Museums displaying M107, M110, or M110A1 vehicles
- Military vehicle owners seeking period documentation for the covered models
- Scale model builders comparing original and upgraded artillery configurations
Approx length 6.5", Approx width 9.5", Approx height .75", Approx weight 1.5lbs.
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