Description
Technical Manual (TM 9-1240-285-34P) for M114 Telescope Mount March 1971 FSN 1240-676-2176
U.S. Army Technical Manual TM 9-1240-285-34P for M114 Telescope Mount, March 1971, FSN 1240-676-2176
Item Overview
This original U.S. Army technical manual covers direct-support and general-support maintenance for the M114 Telescope Mount. Issued in March 1971, it also includes repair-parts information, special tools, and depot-level repair parts.
This listing is for the technical manual only. It does not include the M114 telescope mount, optical telescope, tools, weapon system, or other equipment.
Manual Contents
TM 9-1240-285-34P provides detailed instructions for inspecting, troubleshooting, maintaining, and repairing the M114 Telescope Mount. Its coverage includes:
- Troubleshooting and fault isolation
- Telescope-mount removal and installation
- Deflection and elevation locking mechanisms
- Elevation and deflection boresight adjustments
- Holder, housing, and slide assemblies
- Protective boots and related components
- Backlash checks and final inspection
- Repair parts and special tools
- Illustrated parts identification
This information helped Army maintenance personnel keep the telescope mount properly adjusted and ready for service.
About the M114 Telescope Mount
The M114 was a precision fire-control mount designed to support and position a compatible optical telescope. Its adjustment mechanisms allowed personnel to control elevation and deflection while aligning the optic with its associated weapon or fire-control system.
The manual identifies the M114 Telescope Mount as part number 8574690. Major components shown in the repair-parts section include the holder assembly, part number 8574694, and housing assembly, part number 8574691.
The M114 designation in this manual refers to the telescope mount. It should not be confused with the M114 155-mm howitzer or the M114 armored vehicle.
Historical Background
The telescope mount was first documented under the developmental designation T199. A July 1960 Army manual covered field and depot maintenance for the T199/M114 mount.
This March 1971 publication reflects the mount’s continued support after standardization. It reorganized maintenance information for direct-support and general-support personnel while combining repair-parts and special-tools data with the technical instructions.
Its Vietnam War-era publication date makes it a useful reference for the study of Cold War Army optics, fire-control equipment, and military maintenance practices.
Identification
- Publication: TM 9-1240-285-34P
- Manual Type: Direct Support and General Support Maintenance Manual, Including Repair Parts and Special Tools List
- Equipment: M114 Telescope Mount
- Publication date: March 1971
- Federal Stock Number: 1240-676-2176
- Mount part number: 8574690
- Earlier development designation: T199
Collector and Research Value
This manual is a useful addition to a U.S. Army optics collection, military technical library, museum archive, or restoration reference set. Its illustrated parts information also helps identify original M114 mount components that have become separated from their equipment.
Ideal For
- U.S. Army technical-manual collections
- Military optics and fire-control research
- M114 Telescope Mount identification
- Cold War and Vietnam-era displays
- Museum and restoration reference libraries
- Collectors of original ordnance publications
Approx length 8", Approx width 10", Approx height .15", Approx weight .2lbs.
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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