Description
TM 9-2300-216-35/2 Technical Manual Change 1 – 175mm M107 and 8-Inch M110 Elevating and Traversing Systems – July 1966
Item Overview
This July 1966 Change 1 publication updates TM 9-2300-216-35/2, the U.S. Army field and depot maintenance manual for M107 and M110 elevating and traversing systems. It was issued for use with the original manual dated July 30, 1962. The covered equipment includes the 175mm M107 self-propelled field artillery gun and the 8-inch M110 self-propelled howitzer. As a numbered technical manual update, it is useful for collectors building a period reference set and researchers tracing changes to Army artillery maintenance publications.
Publication Details
The manual number and change designation identify this update within the Army’s heavy artillery maintenance series. Its Federal Stock Numbers identify the complete vehicles to which the parent publication applies.
- Publication: TM 9-2300-216-35/2
- Update designation: Change 1
- Change date: July 1966
- Original manual date: July 30, 1962
- Publisher: Department of the Army
- Parent manual type: Field and depot maintenance
- Subject: Elevating and traversing systems
- M107 application: 175mm self-propelled field artillery gun, FSN 2350-436-6635
- M110 application: 8-inch self-propelled howitzer, FSN 2350-439-6243
The base manual appeared during the early service years of the M107 and M110 family. The Army’s numbered change system allowed selected material to be updated while keeping the original publication number in use. The 1966 issue therefore forms part of the continuing record of that maintenance volume. Preserving a change publication alongside its parent manual helps document which information was current at a particular point in time. It also records how the Army maintained a large technical library as equipment remained in service.
Function and Contents
Change publications keep an existing manual set current by revising its instructions or reference material. This update belongs to the volume covering the mechanisms that raise, lower, and turn the cannon. The parent manual includes maintenance information for elevating and traversing drive assemblies, including their slip clutches and illustrated checks. These systems transfer movement from the gunner’s controls to the weapon mount. Change 1 is intended to be read with the base volume so the update can be understood within the full maintenance instructions.
Documented Applications
The listed applications are the original M107 gun and M110 howitzer configurations named in this update. Its role was to support the technical references used by field repair personnel and depot shops working on their cannon-positioning equipment. This specialized subject is useful when studying mount controls and drive mechanisms separately from the vehicle engine, running gear, or cannon tube. Matching the publication date and vehicle model helps researchers identify the proper reference for an early service configuration and distinguish it from documents covering later artillery variants.
Equipment History
The M107 and M110 entered U.S. service in the early 1960s as heavy artillery vehicles built on a common tracked chassis. Diesel power allowed crews to move each weapon under its own power. The cannon stood on an open rear platform, with working space around the breech and mount. A large rear spade helped steady the vehicle during firing. The related vehicle design gave artillery units common support features while allowing different cannon types to fill separate roles. Its exposed mount and controls are readily visible in period equipment photographs.
Weapon-System Background
The M107 used a long 175mm gun to deliver fire at ranges of nearly 33 kilometers, or about 20 miles. The original M110 mounted an 8-inch howitzer with a range of nearly 17 kilometers, or about 10.5 miles. The gun offered greater reach, while the howitzer was valued for its accuracy and heavier shells. Both supported missions beyond the normal work of lighter artillery. Their elevating and traversing equipment allowed crews to position these large weapons without moving the entire vehicle for every change in aim.
History of Use
M107 guns and M110 howitzers served with U.S. heavy artillery units during the Vietnam War, supporting troops from established firing positions. The use of this manual series is directly documented in the Army’s January 1968 Artillery Trends. A maintenance note cited TM 9-2300-216-35/2 when discussing drive slip-clutch checks on weapons in Southeast Asia. It referred maintenance personnel to the manual’s illustrated guidance and confirmed the published clutch settings. That record connects the parent volume to wartime equipment support and shows why keeping its associated updates with the manual mattered.
Condition
Please check the pictures for the general condition of the item.
Ideal For
This Change 1 update is well suited to a collection focused on Army technical publications, artillery maintenance, or the support work behind Vietnam-era equipment. It is useful for:
- Collectors assembling TM 9-2300-216-35/2 manual and change sets
- Researchers studying M107 and M110 maintenance history
- Museums documenting Cold War heavy artillery equipment
- Military vehicle historians comparing period technical references
- Restoration researchers studying early cannon-positioning systems
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.
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