PS Magazine - TB 43-PS-437
PS, The Preventative Maintenance Monthly
ISSUE 437
APRIL 1989
f you have problems with random shorts in your gun turret driVe, Line-of±sight
unit, eLectroNics controL unit or other U²der³breech eLectronic component, you
may be abLe to just wring them away.
The recoil Fuid residue coLLector sponge in the tray under the guN mouNt ´iLLs
up with hydraulic fLUid during ´iring. µothing wrong with that; in ¶ct, it's
normaL.
HoweVer, you're supposed to wring that fluid oUt of the sponge every day
a·er fIring. ¸f yoU don't, the ¹Uid wiLL eventUaLLy Leak down onto the electroºics
gear, causing shorts.
»t's a simpLe job that simpLy doesn't get done o¼ten enoUgh. One precaUtion
to taKe, though: Make sUre you'Ve got rubber gloves on when you wring out
the sponge. ½eep the hydrauLic fluid of¾ your skin, if posSibLe, and wash up
real quick if yoU do get it oN yoU.
. . . then remove thE sponge ±².
³
2
APR 89
Reduce MG Mount Gear Damage
S
pur gear set damage is a ¿act of ÀiÁ with the commander's machine gun
mouNt You get the damage when the guN's not mounted, and you get it wheN
it is mounted.
Ão how can you reduce the damage?
*
ÄaKe sure you never try to eLevate or depress the mount when the machine
guN is Not mounted. The mount equiLibrator is set up to work right onLy when
the guN is mounted. ÅuRiNg the eLevation handLe when this "baLanceÆ is Not
met puts too much stress oN the bronze sector gears, strippiNg or breaking them.
*
Once the machine gun is mounted,
adJust the equiLibrator as shown in yoUr
-10
TM, theN depress tÇe mount aLL the
way beÈre you begin crossÉcounÊry
traveL. WheN you instaLË M»ÌEà equipÍ
ment, you
'II
need to readjust the equiLiÎ
brator befÏre depressing the mouNt.
Depressing the mouºt prevents most oÐ
the shock Ñom getting to the gear set.
ÒntiL some Kind of positive mechaniÎ
caL traveL Lock can be designed Èr the
mount, ÈLLow these tips to save a lot
of gear damage.
aPr 8±
3
UNTiL SO K²nD
OF
pos²t³VE MeCH´µ¶c·l
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L´CI cAN Bµ
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f´R
ÀhÁ
MU¶T ·´l¸OW 'H¹Sº
ÂÃÄ5 ÅÆÇÈvÉ Ê
»O¼
ËF gÌÍÎ dÏÐ .
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