PS Magazine - JUNE 1986
PS, The Preventative Maintenance Monthly
ISSUE 403
JUNE 1986
M240/M240C Machine Gun .±²
G±²³´
Here're some tips on your M240 that other gunners had to learn the hard
way. Heed them.
All Not Created Equal
Never switch barrels bEtween M240's. The two barreLs you get with your
M240 are gaged to your gun. Another gun±s barrel can cause ruptured
cartridges, or boLt, barreL and receiver damage-and injury to you.
If either barrel deVeLops probLems, turn both in along with the gu².
Use only reamer.
NSN ³933-´1-´³7 µ339³,
to clean inlet holes
1, ¶· 3
Use only scraper,
NSN ³933µ´¸µ´33-15´³,
to clean cyLindeR pLug
S±T IT RighT
Armorers must make sure ³´e
µ240±s reguLator pLug ¶nLet se³³ings
are
_
on No· 1. Settings No· 2 anD 3 are
meant onLy for cou²ter¶ng carbon
builD up or whiLe firi²g w´en it±s coLD
or dusty. ¸he ³wo se³tings maintain
the rate of fire¹ not ¶²crease ¶tº T´ese
settings put an extra Load on ³he gun·
6
JUn² 86
-
±²
-
G¸¹¹º»¼ Out of C½¾trºD¼e jams
Try this next ³ime you have a s³uck
round in your µ240»
Ins³ead of puLLing the trigger as
S³ep 3 on Page 2¼18 of TM 9½1005¼
313¾10 says¹ puLL the charging handLe
to ³he rear and hoLd it there·
Squeeze the trigger a²d e¿a¼s¼e t´e
boLt forward.
Wait 15 m¶nutes untiL the barrel is
cooLÀ Remove ³he barreL· Áift or pry
the cartridge carefuLLy ou³ oF the
chamberº
L¿ck IT À»
When you pu³ a barreL on your
µ240Â make sure i³±s sea³ed anD
LockeD before f¶ring. IF you Don±t¹ ³he
barreL Ãay FLy ofFÄ
SL¶DÅ ³´e barreL fuLLy ¶n³o ³he
rece¶ver w¶³h ³´e barreL reLeasÅ stra¶gh³
uƺ T´en ÆuÇ´ ³hÅ barrÅL reLease
rig´³ ³o Lock ³´e barreL Ȳ pLaceÀ Two
³o seVŲ cL¶cks oÉ Ê´e reLease shouLd
Do ¶ÊÄ I F¶³ ³akÅs Less ³´a² ³wo or more
³ha² sÅVŲ cL¶CKsË Lų your arÃorer
KÌOwÍ L¶kÅ ²oÎ!
JUn²8Á
7
Pry cartridge out
caRefuLLy after
barreL cools
To loCk BaRReL
push reLeaSe ±o the
RIgHt
¹
±O
º
cl²CKs
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