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Each unit armed with a mortar weapon system gives examinations semiannually. Other units may conduct examinations or allow their eligible members to take. 90(FM ). MORTARS. DECEMBER DISTRIBUTION RESTRICTION: Distribution authorized to U.S. Government agencies and their contractors only. Title: FM 9DEC, Version: CHG-1, Date: Dec, Status: Active, Desc: FM (w/ CHANGE 1) MORTARS.

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The collar assembly, with an upper and lower half, is hinged on the left and secured by a locking knob on the right. Placement of the mortar into firing position from the traveling position.

The candidate carries his scorecard Figure from station to station. Then the auxiliary carrying handle is placed in the carrying position.

Individual test scores should be maintained; squad scores should be determined and compared mortar other squads to build esprit de corps. Ammunition is manufactured and packed to withstand all conditions normally encountered in the field. Complete cartridges being fired should be handled with care.

The gunner announces, ” gun number up,” to his squad leader. Mortar ammunition is painted and marked with a color code for quick, accurate identification.

FM Chptr 9 Gunner’s Examination

Variations are authorized, depending on local conditions and the number of men being tested. Based upon use, the principal classifications of training and service ammunition for the M mortar are as follows:. He uses the chain of command to assist him in effecting his command and supervising duties. All mm mortar rounds, except training rounds, have three major components–a fuze, body, and tail fin with propulsion system assembly Figure The gunner takes the sight out of the case and sets a deflection of mils and an elevation of mils.

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If the mortar section is to operate quickly and effectively in accomplishing its mission, mortar squad members must be proficient in individually assigned duties. The mortar is center of traverse, and the vertical line of sight is on the left edge of both aiming posts.

Add to watch list. In any test that calls for mounting or emplacing the mortar, either by the candidate or the board, the surface emplacement is used. The elevation change announced must be less than 90 mils and more than 35 mils.

Watch list is full.

M 60mm Light Mortar

The elevating mechanism is used to elevate or depress the barrel by turning the hand crank at the base of the elevation guide tube. The bipod assembly Figure can be assembled to the barrel either before or after assembly of the barrel to the baseplate.

With the mortar mounted and the sight installed, the gunner lays the sight on the two aiming posts placed out 50 and meters from the mortar on a referred deflection of mils and an elevation of mils.

If the baseplate moved during the misfire procedure, the mortar must be reciprocally laid.

FM 23-90 (w/ CHANGE 1), ARMY FIELD MANUAL: MORTARS (09-DEC-2002)(TO 11W2-5-13-21)

He also inspects each round for cleanliness mlrtars serviceability. The candidate is given two trials; his credit score is the total of these two trial scores.

However, moisture and high temperature can damage ammunition. The carrying position can be in the upper or lower saddle, depending on the mission or enemy situation. People who viewed this item also viewed. The gunner unlocks the barrel from the baseplate by loosening the locking knob until the morrtars can be rotated.

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In TOE units, squad members should be rotated within the squad so that each member can become proficient in all squad positions. If he takes the first trial for record, then he must take the second trial for record even if he fails it. He rotates the barrel 90 degrees in the socket cap so that the flats on the barrel are aligned with the flats of the socket cap. On the outside of the barrel is an upper and a lower firing saddle.

The mm mortar, M, can be fired in the conventional mode or handheld mode Figure morrtars The board makes sure that no unauthorized assistance is given the candidate during the examination.

Each unit armed with a mortar weapon system gives examinations semiannually.

The mortar is laid on a direction stake on the initial mounting azimuth with the traversing mechanism centered. If not, he may still fire at the mogtars range by selecting a charge zone having a higher elevation for that particular range.

An item that has been used previously. The ammunition bearer replaces any safety pins and inspects the primer of the ignition cartridge. Get the item you ordered or get moetars money back.

The pull wire on the M fuze must be replaced before returning it to its tm. He should tap up on the bottom of the sight to ensure proper seating.