Description
TM 9-2300-216-34-1 Technical Manual for M107, M110 and M110A1 – April 1977
Item Overview
TM 9-2300-216-34-1 is the April 1977 U.S. Army technical manual for hull and related component maintenance on the 175mm M107 self-propelled field artillery gun and the 8-inch M110 and M110A1 self-propelled howitzers. Written for direct support and general support personnel, it documents the repair work that kept these heavy tracked vehicles ready for service. It is a useful reference for military vehicle collectors, restoration projects, and Cold War artillery research.
Publication Details
This publication identifies its maintenance level, vehicle coverage, and issue date on its title pages. The National Stock Numbers below identify the covered artillery vehicles.
- Manual Number: TM 9-2300-216-34-1
- Publication Type: Direct Support and General Support Maintenance Manual
- Volume Subject: Hull and Related Components
- Publication Date: April 30, 1977
- Issuing Agency: Headquarters, Department of the Army
- M107 Application: 175mm self-propelled field artillery gun, NSN 2350-00-436-6635
- M110 Application: 8-inch self-propelled howitzer, NSN 2350-00-439-6243
- M110A1 Application: 8-inch self-propelled howitzer, NSN 2350-01-013-3914
Issued on April 30, 1977, this edition superseded TM 9-2300-216-34/1 dated January 30, 1969, including all changes. Its title lists the M110A1 alongside the established M107 and M110. The publication reflects the Army's continuing updates to heavy artillery maintenance during the 1970s. For collectors and researchers, its date and model coverage place it at a clear point in the technical manual series and the development of the M110 family.
Function and Contents
The manual's 23 chapters cover troubleshooting, major component removal and installation, inspection, repair, and assembly. Subjects include the powerplant and its accessories, auxiliary drive, cooling and air-cleaner systems, driver's controls, electrical wiring, and hull hydraulics. It also covers tracks, suspension, final-drive hubs, spade and lockout cylinders, seats, hull doors, deck panels, fuel cells, and the fixed fire-extinguisher system. Illustrations and repair-standard tables help readers identify parts and understand inspection points. Later chapters address crew shelters, heaters, winterization equipment, and an arctic traction kit. Final inspection and road-test information documents how repaired vehicles were checked before return to service.
Documented Applications
This volume applies to the M107, original M110, and M110A1 vehicles named on its cover. Its focus is the hull and supporting vehicle systems shared across the family. The text uses “A” and “B” codes to distinguish earlier and improved vehicle configurations, with serial-number ranges and modification records helping identify the correct coverage. These codes describe vehicle features within the manual. They should not be confused with the M110A1 model designation. This detail makes the publication useful when comparing preserved vehicles with period Army records.
Equipment History
The M107 and M110 entered U.S. Army service in the early 1960s as closely related heavy artillery vehicles. Both used a tracked chassis with a diesel powerplant at the front and an open gun platform at the rear. A rear spade helped brace the vehicle during firing, while the suspension supported travel over rough ground. Shared vehicle systems allowed much of their maintenance guidance to appear in one manual. The longer-barreled M110A1 entered service in 1977, extending the useful life and capability of the 8-inch artillery design.
Weapon-System Background
The M107 carried a 175mm gun built for long-range fire, reaching nearly 33 kilometers, or about 20 miles. The original M110 used an 8-inch howitzer known for accurate fire with a heavy, roughly 200-pound projectile. Its range was nearly 17 kilometers, or about 10.5 miles. These weapons gave commanders different options for heavy fire support on a common vehicle base. The M110A1's longer M201 howitzer increased the reach of the 8-inch system. Their different armaments explain why the family included both a field artillery gun and heavy howitzers.
History of Use
The M107 and original M110 saw combat in Vietnam, supporting ground forces from artillery positions and firebases. Army histories describe 8-inch howitzers supporting divisions and mixed 175mm and 8-inch units serving under field force commands. Their heavy fire supported operations beyond the reach or capacity of smaller artillery. Keeping these vehicles in service required repair support for the chassis, powerplant, hydraulics, and running gear. The M110A1 belonged to the later Cold War phase of the family's service. This 1977 manual documents the maintenance support behind that transition from Vietnam-era equipment to an improved 8-inch system.
Ideal For
This manual adds detailed vehicle-maintenance documentation to a collection or research library focused on U.S. heavy artillery. Its hull coverage is especially useful for studying the mechanical systems beneath these large weapons.
- Collectors of U.S. Army technical manuals and Cold War military publications.
- M107, M110, and M110A1 vehicle owners researching period maintenance information.
- Restoration teams identifying hull components and vehicle configuration differences.
- Museums developing displays about tracked artillery and military repair support.
- Historians studying the 1970s development of the M110 howitzer family.
Approx length 8", Approx width 11", Approx height 1", Approx weight 2lbs.
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