Description
TM 9-2300-216-20 Technical Manual for M107 / T235E1 and M110 / T236E1 – June 1962
Item Overview
TM 9-2300-216-20 is a U.S. Army organizational maintenance manual for two major heavy artillery vehicles. This June 1962 publication explains the maintenance work assigned to unit mechanics. It offers collectors and researchers a period reference to the mechanical systems that kept these tracked guns and howitzers ready for service.
Publication Details
The manual number, date, vehicle designations, and Federal Stock Numbers identify this edition and its listed equipment. These details are useful when matching a publication to a collection or research project.
- Manual Number: TM 9-2300-216-20
- Publication Type: Organizational Maintenance Technical Manual
- Publication Date: June 1962
- Issuing Authority: Department of the Army
- 175mm M107 / T235E1 Self-Propelled Field Artillery Gun: FSN 2350-436-6635
- 8-Inch M110 / T236E1 Self-Propelled Howitzer: FSN 2350-439-6243
Function and Contents
The manual covers service upon receipt, lubrication, preventive maintenance, troubleshooting, and descriptions of major assemblies. Its system sections address the power plant, engine, fuel and exhaust systems, cooling, electrical equipment, transmission, tracks, suspension, controls, hull, hydraulic equipment, armament, and sighting equipment. Additional coverage includes maintenance under unusual conditions. The appendices provide publication references and a maintenance allocation chart that assigns duties to each maintenance level. The introduction identifies TM 9-2300-216-20P as the separate repair parts and special tools list.
Publication History
The June 1962 manual belongs to the first generation of technical publications for this artillery family. Its introduction states that the first edition was published before a complete technical review had been finished. Readers were asked to report errors or omissions to the Army's Raritan Ordnance Arsenal. This detail makes the publication a useful record of how maintenance guidance developed as new equipment entered the Army's supply and support system.
Documented Applications
This edition applies to the early M107 gun and M110 howitzer identified by the stock numbers above. Its T235E1 and T236E1 designations connect the equipment to the development names used during their introduction. The vehicles were intended to support ground troops and armored columns. Today, the publication helps readers study the maintenance requirements of those specific early models.
Equipment History
The M107 and M110 belonged to a Cold War generation of mobile heavy artillery. The M110 entered U.S. service in 1963, shortly after this manual was published. Both vehicles used a shared tracked carriage with diesel power, torsion bar suspension, and an open working platform behind the engine compartment. A large rear spade helped steady the vehicle during firing. Their common carriage allowed the Army to support two different weapons with closely related automotive equipment. The M110 family later grew into improved models and served the Army and Marine Corps for more than 30 years.
Weapon-System Background
The M107 carried a long 175mm M113 gun built for extended-range fire support. Its reach of almost 33 kilometers, or about 20 miles, let batteries cover wide areas. The original M110 carried an 8-inch howitzer that fired a roughly 200-pound projectile to nearly 17 kilometers, or about 10.5 miles. It was valued for accurate, heavy fire. These different strengths gave commanders a choice between greater reach and the weight and accuracy of the larger howitzer round.
History of Use
Both systems served in the Vietnam War, where heavy artillery units operated from fire support bases and other prepared positions. The 8-inch howitzer supported many division artillery units, while field force artillery used both calibers. Batteries could change their mix of guns and howitzers as missions changed because the weapons shared the same carriage. These heavy tracked vehicles moved between positions by ground convoy. For the soldiers who maintained them, dependable engines, tracks, and hydraulic systems were essential to keeping artillery support available throughout a campaign.
Ideal For
This manual adds a maintenance-focused reference to a military publication collection. Its early date and coverage of a shared artillery platform make it useful for several areas of historical study.
- Collectors of U.S. Army technical manuals
- M107 and M110 artillery enthusiasts
- Researchers studying Cold War equipment development
- Museums documenting military vehicle maintenance
- Model builders studying early vehicle layouts and components
Approx length 8", Approx width 10", Approx height .5", Approx weight 1lbs.
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