Description
TM 9-2300-216-20P Change 3 – M107 175mm Gun and M110 8-Inch Howitzer – June 1967
Item Overview
This June 1967 Change 3 publication updates TM 9-2300-216-20P, the U.S. Army organizational maintenance repair parts and special tools list for the M107 175mm self-propelled field artillery gun and M110 8-inch self-propelled howitzer. It belongs with the original manual issued July 17, 1962. The item listed is the Change 3 update, intended to revise that earlier reference rather than serve as a complete stand-alone manual.
Publication Details
The manual number, change designation, and vehicle stock numbers identify this publication within the Army's technical reference system. FSN stands for Federal Stock Number.
- Manual and revision: TM 9-2300-216-20P, Change 3.
- Publication type: Organizational maintenance repair parts and special tools list update.
- Change date: June 1967.
- Original manual date: July 17, 1962.
- Issuing authority: Headquarters, Department of the Army.
- M107 175mm self-propelled field artillery gun: FSN 2350-436-6635.
- M110 8-inch self-propelled howitzer: FSN 2350-439-6243.
Function and Contents
The parent manual identifies repair parts and special tools used for organizational maintenance, the work assigned to maintenance personnel within the operating unit. These references helped mechanics identify needed items and helped supply personnel prepare requests for them. Change 3 amends information in that parts-list system and should be read alongside the parent publication. Its purpose is to update the equipment support reference; detailed repair procedures belong to the separate maintenance manual.
Publication History
The July 1962 parent manual came from the early years of the M107 and M110 program. Change 3 followed in June 1967, nearly five years later, during a period of active service for both systems. Army change publications allowed existing technical references to be revised without issuing an entirely new manual each time. For collectors and researchers, this update records a specific stage in the parts-list revision history and helps place the original publication in its service-era context.
Documented Applications
This publication applies to the M107 and original M110 vehicles identified above. Both used a common tracked carriage, but each carried a different artillery weapon. Their shared vehicle design made a combined parts reference practical while still requiring attention to model-specific equipment. The documented application is unit-level maintenance and supply support for these two self-propelled artillery systems. The stock numbers identify the complete vehicles covered, rather than individual replacement parts.
Equipment History
The M107 and M110 were developed as a family of mobile heavy artillery vehicles during the early 1960s. The M110 entered service in 1963. Their common carriage used diesel power, tracks, and an open rear working area for the gun crew. A rear spade helped steady the vehicle during firing. Sharing a carriage also allowed the Army to change the balance of 175mm guns and 8-inch howitzers as needs changed. The M110 family went on to serve the Army and Marine Corps for more than 30 years.
Weapon-System Background
The M107's long 175mm gun tube gave it a reach of almost 33 kilometers, or about 20 miles. That range allowed heavy artillery units to cover large areas. The original M110 used a shorter 8-inch howitzer and fired a projectile weighing about 200 pounds to almost 17 kilometers, or roughly 10.5 miles. It was valued for accurate heavy fire. These different strengths explain why the Army supported both weapons on a shared vehicle platform.
History of Use
Both systems saw combat during the Vietnam War. Eight-inch howitzers served with most U.S. division artillery organizations, while field force artillery used both 8-inch howitzers and 175mm guns. Heavy batteries operated from prepared positions and fire support bases, with self-propelled artillery moving by ground convoy. Widely scattered firing units created added supply and maintenance demands. Parts-list updates formed part of the support system behind that work.
Ideal For
This dated change publication is useful for building a technical reference collection or studying how the Army supported heavy artillery during the 1960s.
- Collectors of U.S. Army technical manuals and change publications.
- M107 and M110 vehicle history enthusiasts.
- Researchers studying military repair parts and supply records.
- Museums preparing exhibits on Vietnam-era artillery support.
- Owners of the July 1962 parent manual seeking its Change 3 update.
Approx length 8", Approx width 10", Approx height .1", Approx weight .1lbs.
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.
Please visit our page about order lead times here: Order Lead Times.