PS Magazine - TB 43-PS-434

PS, The Preventative Maintenance Monthly

ISSUE 434

JANUARY 1989
PS Magazine - TB 43-PS-434 - Page 4 of 33
M2/M3-Series BRadley .±±
W
eed ou
;
unusable barrel suppoRt as-
semblies
by
eyeballIng
the damPer
weld aNd tubes fr cracks. ±F you ²Ind
any, you need to see
If
You have an old
barrel suppoRt that can be temporarIly
FIxed³
Look Fo² c²Ack³ ´n bA²²Eµ
³uppo¶ tubE AND DAmpE² wE·D
BoTh the olD anD new barrel supporTs
have an insIDe weld aT the breech end
o´ The bARrel supporT assembly where
The Damper assembly Is attacheDµ ¶he
olD barreL suppo·Ts have a tack weLd
anD new ba¸rel supports have a con¹
Tinuous DoubLe welD³
º´ you have a new bA¸reL support,
you can'T ´»x or ConTinue to use it i´ iT
has cracksµ
±´ your tube has The taCk welD, mea¼
sure the cracks³ ½´ The cracks are shorter
than two inches, orDer a new TUbe buT
conTInue to use The olD oneµ ¾oTe on
¿À Áorm 2408¼Â, WeapoÃs ÄeCorD
¿ata, that The cracks should be reÅmeaÆ
sured a´ter every ´iring missionÇ
È´ cracks in The welÉ a·e loÃger Than
Two inches, the Tube's unusableµ
Eyeball the resT o´ The baÊeL supporT
TUbeË
±´ there are any CraCks longer
than one inCh, The Tube's no gooDË
º´ you ´Ìnd a crackÍoTher than Those
on the Damper welDÍless Than one
inCh, ´Ìx these olDe· Tubes by DriLLing
a ÎSÅin hoLe aT The enD o´ The CraCk
´aÏHest Ðom The Damper assembLyÑ
¿·ill aLL the way through the TubeË Òhat
4
J¸¹ 89
-
OH
ºU0»¼C½T¾¿G
YOÀÁ PÂÃÄ
Å5ÆÇÈÉÊË
ÌÍÎÏÐg
ÑÒ:ÓÔÕÖ×ØÙÚÛ
ÜÝÁVÞßà
Wáââ Hãâä
åæçvèéê
ë
ìíîKïð
ñ
reLieves The pressure causing the crack
anD sTops it Óom going ´artherµ Ôse
The tube untIL you get a new one³
Measure cracKs a´ter every ´IrIng and
continue to stop drIll³ Õ´ any reach one
InCh,
stop
using
the
baR¸el
suppoRÖ
tube×
J¸¹ 89
ò
±´ your bArReL suppoRt is one o´ the
new ones, you need to FIll ouÖ a QØalIty
¿e´»ciency Äeport (ÙÚ 36Û) when yoØ
order a new Tube and send It To:
Commander
US Army Armament, MuNitions
and Chemical Command
AT±: AMS²C-QAD
Rock Island³ IL
61óôôõ6ööö
Üelp prevenT crackIng by lubrIcaTing
The damper aÝsembly during semianÞ
nual seRviceµ ¶he procedure's on ßage
2à310 through 2¼312 In ¶M 9à1005à
200à20&ßá
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