Browning machine gun caliber .50, M2, aircraft, fixed and flexible. Page: 30
54 p. : ill. ; 22 cm.View a full description of this book.
Extracted Text
The following text was automatically extracted from the image on this page using optical character recognition software:
TM 9-225
14 ORDNANCE DEPARTMENT
in the bore, and in case this happens and another round is fired
before the bore is cleared, the gun will be damaged seriously.
b. Classes.--Stoppages may be classed under two main headings:
(1) Temporary.-Temporary stoppages are caused by-
(a) Failure of some part, duplicate of which is carried with the
gun.
(b) Faulty ammunition.
(c) Failure of personnel to inspect gun before or during firing.
(2) Prolonged.-Prolonged stoppages are caused by a failure of
some part that, as a rule, cannot be replaced or repaired without
skilled assistance. These necessarily put the gun out of action for a
more or less prolonged period.
c. Unusual malfunction.--(1) Recurring short rounds.-Exces-
sive wear of the parts of the feed mechanism may cause recurring
short rounds. Inspection of the base of the first cartridge removed
from the belt will show a dent in the rear end of the case made by
the corner of the extractor. This stoppage is remedied by inspecting
feed mechanism and replacing defective parts. Inspection of am-
munition belts before firing will disclose short rounds inherent in
the ammunition.
(2) Loose bullets.-In some lots of ammunition which have deteri-
orated from storage or exposure, the front end of the case is not
securely crimped on the bullet. When the extractor withdraws the
cartridge from the belt, the case only is withdrawn, leaving the
bullet in the belt. Loose powder scattered in the mechanism may
cause a stoppage. This stoppage is remedied by removing the
obstruction. The best prevention of this type of stoppage is a rigid
inspection of ammunition prior to firing.
(3) Broken T-slot.-A broken T-slot will fail to extract the empty
case from the chamber and will usually scar the rim of the case.
This stoppage is remedied by replacing the bolt.
(4) Broken barrel extension.-The bolt will not go home and the
gun will generally stop firing. In rare cases, the gun will fire a
few rounds with a broken barrel extension. This stoppage is
remedied by disassembling the gun and replacing the broken part.
(5) Uncontrolled automatic flre.-Uncontrolled automatic fire is
the continuation of fire when the trigger or sear mechanism is re-
leased. If the cause is present before the gun is fired, it will com-
mence the moment the bolt is home the second time during loading; or
if the defect occurs during firing, the gun will not stop firing when the
trigger or sear mechanism is released.30
Upcoming Pages
Here’s what’s next.
Search Inside
This book can be searched. Note: Results may vary based on the legibility of text within the document.
Tools / Downloads
Get a copy of this page or view the extracted text.
Citing and Sharing
Basic information for referencing this web page. We also provide extended guidance on usage rights, references, copying or embedding.
Reference the current page of this Book.
United States. War Department. Browning machine gun caliber .50, M2, aircraft, fixed and flexible., book, April 30, 1942; Washington D.C.. (https://digital.library.unt.edu/ark:/67531/metadc29988/m1/32/: accessed May 23, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.