Read Online or Download Antiaircraft Artillery Field Manual, Svc. of the Piece, Cal .50 AA Mach. Gun [FM 4-155] PDF
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Additional info for Antiaircraft Artillery Field Manual, Svc. of the Piece, Cal .50 AA Mach. Gun [FM 4-155]
Removing oil buffer spring SPRING and guide. To unless absolutely necessary for repairs or replacement. -ripped by hand and pulled to the rear. The oil buffer spring guide is depressed until it clears the piston rod pin and then is 50 CALIBER . 50 AA MACHINE GUN 64-6'i turned until the pin will pass through the slots provided the guide. Remove the guide and spring. (See fig. ) in 65. BARREL EXTENSION GROUP. The barrel is extension --a. together they screwed onto the breech end of the barrel; form a unit.
The breech lock serves to lock the bolt to the barrel extension during and after firing. Fastened to the back end of the barrel extension is the barrel extension shank which engages the oil buffer. The shank is fastened very securely into the extension by a pin. 0 66. DETAILED DISASSEMBLING OF BARREL EXTENSION GROUP. Unscrew Remove the the barrel from the barrel extension. barrel-locking out of its seat in spring by sliding it forward the barrel lock pin and Push out the breech extension. remove the breech lock.
To disassemble the assembly, withdrd the cotter pin from the retracting slide bracket bolt, unscrew the retracting slide nut, and remove the bolt from the retract, ing slide bracket. Withdraw the cotter pin from the retract" ing slide lever stud, unscrew the retracting slide nut, and remove the washer. Remove the retracting slide lever and the grip assembly from the lever stud. Remove the lever spring Remove the retracting slide from the retracting slide bracket Unscrew the retracting slide lever stop from the retractinl slide.