TM 9-1240-400-34&P
CHAPTER 1
INTRODUCTION
Section I. GENERAL INFORMATION
1-1. SCOPE.
1-3.
DESTRUCTION OF ARMY MATERIEL TO
PREVENT ENEMY USE. Fire control instruments must
a. Type of Manual.
Direct and general support
be destroyed in a way that same essential parts, on like
maintenance.
equipment, cannot be used to construct one complete
unit from damaged ones. Refer to TM 750-244-6.
b. Model Numbers and Equipment Names:
1-4. PREPARATION FOR STORAGE OR SHIPMENT.
Administrative storage is restricted to 90 days and must
(1) M115 Panoramic Telescope
not be extended. Refer to TM 9-2350-304-20-2 and SB
(2) M138 Telescope Mount
740-95-700, Storage Serviceability Standards for
(3) M137 Telescope Mount
ARRCOM Materiel for Fire Control Items, for detailed
(4) M139 Telescope Elbow
instructions on administrative storage.
c. Purpose of Equipment.
1-5.
OFFICIAL NOMENCLATURE, NAMES, AND
DESIGNATIONS. Shortened nomenclature is used in
(1) M115 Panoramic Telescope is used on
this manual to make procedures easier for you to read.
M11 OA2 self-propelled howitzer for direct or indirect
A cross-reference between the shortened nomenclature
sighting as part of a two-sight, two-man system.
and its official nomenclature is shown in the following
table.
(2) M138 Telescope Mount adapts M139
elbow telescope to M110A2 self-propelled howitzer and
Nomenclature Cross-Reference List
provides adjustments in elevation and deflection
(azimuth).
Manual
Official
Nomanclature
Nomenclature
(3) M137 Telescope Mount adapts M115
panoramic telescope to M11 OA2 self-propelled howitzer
Bracket
Angle bracket
and provides adjustments in elevation and cant (cross-
Cap
Air valve cap
level).
Setscrew
Socket wrench
attachment
(4) M139 Telescope Elbow is used to lay the
Cover
Riveted door
M11 OA2 self-propelled howitzer in elevation and
Eccentric
Control cam
deflection for direct fire operation.
Eccentric ring
Optical element
holder
1-2.
MAINTENANCE FORMS, RECORDS, AND
Elevation knob
Knob assembly
REPORTS.
Department of the Army forms and
Elevation level
Fire control
procedures used for equipment maintenance will be
vial tube
level
prescribed by DA PAM 738-750. The Army Maintenance
Management System (TAMMS).
1-1
