B M Tripod Mount

(1) Traversing and elevating mechanism. The traversing bar assembly serves as a rear support for traversing and elevating mechanism, which in turn supports the M2 machine gun. The M3 tripod mount has a double, screw-type traversing and elevating mechanism. The upper screw is attached to the yoke, which is connected to the M2 machine gun by the guide release pin through the holes in the rear mounting lugs of the receiver assembly. A scale shows 250 mils in depression and 100 mils in elevation. A setscrew fastens the elevating handwheel to the upper elevating screw, permitting the handwheel graduations to be synchronized with those on the screw. The traversing sleeve and screw are clamped in place on the bar by the traversing slide lock lever. The traversing sleeve is properly mounted when the lock lever is to the rear and the traversing handwheel is positioned to the left.

(2) Front leg and bearing assembly head. The M3 tripod mount has three telescopic tubular legs connected at the bearing assembly head. The rear legs are joined together and supported by the bar. The bearing assembly head furnishes a front support for the mounted M2 machine gun which is supported by the front leg.

c. M66 Machine Gun Mount Ring. Upper race rotates 360 degrees and contains a bearing assembly which receives pintles of the M142 or the 6650 mount. Has traverse lock which prevents the rotation of ring.

UPPER RACE

M66 Mount Legs
TRAVERSE LOCK

BEARING ASSEMBLY

UPPER RACE

1-12. PRINCIPLES OF OPERATION (cont)

Flexible Machine Gun Mount

d. M240E1 Flexible Machine Gun Mount. Platform and pintle for the M240E1 machine gun. Platform has dual spring shocks which dampen recoil of the machine gun. Pintle is attached to the platform and allows for insertion into sockets on armored vehicles and gives 360 degree traverse capability. Ammunition box assembly attached to left side for belted ammo feed ease.

Weapon Mount M249

e. M142 Machine Gun Mount. Platform and pintle for mounting M60/M249 machine gun to a vehicle socket. Platform supports the machine gun and attaches to the pintle, which gives the mount 360 degree rotation when inserted in the vehicle socket. Socket can be a permanent part of the vehicle or part of M66 ring or M548 mount. See ammunition box assembly for location of belted ammunition can.

Machine Gun Mount

6650 .50 Cal Machine Gun Mount. Platform and pintle for mounting M2 machine gun to a vehicle socket. Platform, which has a built-in recoil dampening device, supports the machine gun and attaches to the pintle, which gives the mount 360 degree rotation when inserted in the vehicle socket. Socket can be a permanent part of the vehicle or part of M66 ring or M548 mount. Not to be used on the M4 pedestal. Left side mounted ammo can support assembly for positioning belted ammo for feeding to machine gun.

BEARING ASSEMBLY

TRAVERSE LOCK

BEARING ASSEMBLY

M66 Gun Mount Ring

TRAVERSE LOCK

g. M548 Machine Gun Mount. Upper race rotates 360 degrees and contains a bearing assembly which receives pintles of the M142 or the 6650 mount. Has traverse lock which prevents the rotation of ring. Has four support legs for mounting to the M548 ammunition carrier.

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