US Army, Technical Manual, TM 9-1315-249-12&P, 81MM MORTAR TRAINING DEVICE: 81MM SABOT (INERT) M1, AND 22MM SUB-CALIBER PRACTICE CARTRIDGE M744, M745, M746, AND M747, 1990

US Army, Technical Manual, TM 9-1315-249-12&P, 81MM MORTAR TRAINING DEVICE: 81MM SABOT (INERT) M1, AND 22MM SUB-CALIBER PRACTICE CARTRIDGE M744, M745, M746, AND M747, 1990 Review

US Army, Technical Manual, TM 9-1315-249-12&P, 81MM MORTAR TRAINING DEVICE: 81MM SABOT (INERT) M1, AND 22MM SUB-CALIBER PRACTICE CARTRIDGE M744, M745, M746, AND M747, 1990


Scope
This publication provides operator and unit personnel with instructions for maintenance and use of the training device for 81mm Mortars (all models); 81mm Sabot (INERT), M1; and 22mm sub-caliber practice cartridge, M744, M745, M746 and M747.


CHAPTER 1. INTRODUCTION
Section I. General
Scope
II. Description and Data
Description
Data
III. Functioning
Sabot loaded with practice round
22mm practice cartridge
CHAPTER 2. OPERATING INSTRUCTIONS
Section I. Safety Precautions
General
Safety area
Firing safety
Duds
II. Operating Procedures
Preparation for firing
Firing
During firing
Cancellation of firing
Operation under extreme weather conditions
CHAPTER 3. OPERATOR MAINTENANCE
Prior to firing
During firing
After firing
CHAPTER 4. UNIT MAINTENANCE
General
Sabot
22mm sub-caliber practice cartridge
APPENDIX A. REFERENCES
B. MAINTENANCE ALLOCATION CHART
C. BASIC ISSUE ITEMS LIST (not applicable)
D. REPAIR PARTS AND SPECIAL TOOLS LIST
E. CONSUMABLE MAINTENANCE SUPPLIES AND MATERIALS


LIST OF ILLUSTRATIONS
Figure Title Page
1-1 81mm Sabot, M1
1-2 22mm practice cartridge, M744, M745, M746, M747
1-3 81mm Sabot cross section showing 22mm cartridge in loaded position
1-4 81mm Sabot, Ml-flange nut assembly
1-5 Sabot packing box
1-6 22mm cartridge cross section
1-7 Cartridge packing box
1-8 Firing of mortar training device and cartridge
1-9 Cartridge cross section
1-10 Diagram of Sabot and 22mm cartridge, firing to impact
1-11 Optical and acoustical observation of target strikes
2-1 Recommended safety zone
2-2 Misfire removal procedure
2-3 Removal of flange nut
2-4 Insertion of cartridge
2-5 Removal of safety cap
2-6 Replacement of flange nut
2-7 Removal of fired cartridge
2-8 Firing table for 81mm Sabot, M1, using 22mm practice cartridge
3-1 Cleaning staff assembly, cleaning wick and brushes