Technical Manual Change 1 (TM 9-1240-285-35P) for M114/T199 Telescope Mount March 1961

Technical Manual Change 1 (TM 9-1240-285-35P) for M114/T199 Telescope Mount March 1961

Technical Manual Change 1 (TM 9-1240-285-35P) for M114/T199 Telescope Mount – March 1961

Item Overview

This original U.S. Army Change 1 publication updates TM 9-1240-285-35P, the field and depot maintenance repair-parts and special-tools list for the M114 Telescope Mount, formerly designated T199.

Change 1 was issued in March 1961. It applies to the original technical manual dated May 17, 1960.

This listing is for the Change 1 update only. It is not the complete May 1960 base manual and does not include the telescope mount, optical telescope, tools, tank, or other fire-control equipment.

About the Original Manual

TM 9-1240-285-35P provided repair-parts and special-tools information for field and depot maintenance of the M114/T199 Telescope Mount. It helped Army personnel identify components and order the correct replacement parts.

The base publication covered information such as:

• Major assemblies and smaller repair parts
• Illustrated component identification
• Official part names and numbers
• Maintenance-level authorization
• Special-tools information
• Numerical parts indexes
• Supply and requisition references

M114/T199 Telescope Mount History

The T199 designation identifies the mount’s developmental form. It was standardized as the M114 Telescope Mount during the early service period of the M60 main battle tank.

The M114 supported the M105C articulated telescope. Together, they served as a secondary direct-fire sighting system for the 105-mm Gun, Full-Tracked Combat Tank M60.

The complete mount was identified by part number 8574690. Its major components included housing assembly 8574691 and holder assembly 8574694. The mount was cataloged under FSN 1240-676-2176, later written as NSN 1240-00-676-2176.

Historical Significance

Issued less than a year after the base manual, this March 1961 change reflects the Army’s effort to keep early M60 maintenance records current. It provides a useful look at how Cold War repair-parts publications were corrected and updated in service.

Change sheets are often separated from their original manuals after installation. A surviving standalone update is a useful reference for collectors comparing different editions of the M114/T199 parts manual.

Identification

• Publication: Change 1
• Manual number: TM 9-1240-285-35P
• Equipment: Telescope Mount M114
• Developmental designation: T199
• Change date: March 1961
• Original manual date: May 17, 1960
• Publication type: Field and Depot Maintenance Repair Parts and Special Tools List update
• Mount part number: 8574690
• Federal Stock Number: 1240-676-2176
• Parent system: M60 105-mm gun full-tracked combat tank

Ideal For

• U.S. Army technical-manual collections
• M60 tank restoration research
• M114/T199 parts identification
• Military optics and fire-control archives
• Cold War armored-vehicle displays
• Collectors assembling a complete manual set

Approx length 8", Approx width 10", Approx height .1", Approx weight .1lbs.

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