Technical Manual (TM 9-1240-268-35) for XM113 Periscope Mount May 1961

Technical Manual (TM 9-1240-268-35) for XM113 Periscope Mount May 1961

Technical Manual TM 9-1240-268-35 is a May 1961 Department of the Army field and depot maintenance publication for Periscope Mount XM113. The mount supported and aligned the gunner's XM30 periscope on the M67A1 Flame Thrower Tank.

This focused technical reference documents a specialized fire-control sight mount from an early-1960s armored-vehicle system. It is useful for understanding the XM113 by its official nomenclature, maintenance level, associated optic, and vehicle application.

Historical Significance

The M67A1 adapted the M48 tank family for turret-mounted flame-thrower service, using the M7A1-6 main-armament mechanized flamethrower in place of a conventional tank gun. Within its fire-control arrangement, the XM113 mount carried the XM30 gunner's periscope and provided the mounting and adjustment interface needed to align the sight.

Published in May 1961, TM 9-1240-268-35 preserves the Army's field and depot maintenance reference for this distinct optical-mount assembly during the M67A1's service era.

M67A1 Flame Thrower Tank Application

The XM113 was installed at the gunner's station as the mount for the XM30 periscope. The mount incorporated azimuth and elevation boresight adjustments, couplings, a level vial, and related mounting hardware, supporting controlled alignment of the sight within the tank's fire-control system.

What This Manual Covers

TM 9-1240-268-35 is identified as the field and depot maintenance manual for Periscope Mount XM113. Its scope places the publication at the maintenance level responsible for the mount as a serviceable fire-control component, rather than presenting a general operator's guide to the M67A1 tank.

The manual centers on the XM113 assembly associated with the XM30 gunner's periscope and provides the period technical reference for personnel working with that mount.

Key Features

• Publication number: TM 9-1240-268-35
• Official subject: Periscope Mount XM113
• Publication date: May 1961
• Maintenance scope: field and depot maintenance
• Vehicle application: M67A1 Flame Thrower Tank
• Associated sight: XM30 gunner's periscope
• System role: mounting and alignment interface for the gunner's sight

Why This Manual Matters

The XM113 was a specialized part of the M67A1's fire-control arrangement, and its correct identification depends on understanding both the mount and the optic it supported. This manual connects the XM113 nomenclature with its XM30 periscope application and preserves a maintenance-level reference for a less commonly documented armored-vehicle sighting component.

About This Manual

Issued by the Department of the Army in May 1961, TM 9-1240-268-35 is titled as the field and depot maintenance manual for Periscope Mount XM113. It is specific to the mount used with the XM30 gunner's periscope in the M67A1 Flame Thrower Tank.

Ideal For

This manual is a strong fit for:

• M67 and M48-series armored-vehicle historians
• Military fire-control and optical-equipment researchers
• Museum staff and restoration researchers
• Researchers studying U.S. Army flame-thrower tanks

Approx length 8", Approx width 10", Approx height .2", Approx weight .2lbs.

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