Browning machine gun caliber .50, M2, aircraft, fixed and flexible. Page: 18
54 p. : ill. ; 22 cm.View a full description of this book.
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TM 9-225
10 ORDNANCE DEPARTMENT
b. Oil buffer group (fig. 7).-(1) Remove oil buffer, barrel exten-
sion, and barrel assembly from gun. Detach oil buffer from barrel
extension by pressing accelerator forward.
(2) Remove oil buffer body spring lock by pulling it to the rear.
(3) Hold oil buffer body bottom up in the left hand, with the index
finger between depressors and prongs of accelerator. With the point
of a cartridge, press stud on end of oil buffer tube lock assembly to
disengage it from its hole in oil buffer tube body. At the same time,
raise accelerator upward and rotate to the rear. Remove oil buffer
tube lock assembly.
(4) Drive out accelerator pin and remove accelerator.
(5) The oil buffer tube assembly should not be disassembled unless
absolutely necessary to replace the oil buffer spring. To disassemble,
depress oil buffer spring guide sufficiently to clear oil buffer piston
rod pin; turn oil buffer spring guide until oil buffer piston rod pin
will pass through slots in the guide. Remove guide and spring.
Caution: The oil buffer spring is under sufficient compression to
cause injury to personnel.
c. Barrel group.-(1) Remove barrel by unscrewing from barrel
extension (fig. 8).
(2) Remove barrel locking spring by sliding it forward out of its
seat in barrel extension. It may be necessary to drive it out, using
point of shell inserted in small hole near rear of locking spring.
(3) Push out breech lock pin and remove breech lock.
(4) The barrel sleeve is permanently assembled to the barrel and
should not be removed.
d. Cover group (fig. 9).-(1) Remove cover pin cotter pin. Drive
out cover pin and lift cover free from trunnion block.
(2) Remove belt feed lever pivot stud cotter pin and pry belt feed
lever off its pivot stud, taking care while doing so that belt feed lever
plunger and spring do not fly out. In removing belt feed lever, see
that toe of lever is in line with slot in cover, otherwise it will not
pass out.
(3) Remove belt feed lever plunger and belt feed lever plunger
spring from belt feed lever.
(4) Remove belt feed slide, complete, from its guides in the cover.
(5) Push out belt feed pawl pin, which will enable belt feed pawl,
belt feed pawl spring, and belt feed pawl arm to be separated.
(6) Remove cover latch spring by lifting its front end out of slot
in cover and sliding it forward.
(7) Remove cover extractor spring by releasing its rear end from
its seat in cover extractor cam and sliding to the rear.18
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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/m1/20/: accessed May 23, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.