PS Magazine - TB 43-PS-421
PS, The Preventative Maintenance Monthly
ISSUE 421
DECEMBER 1987
i
'·
M 113-Series FOV .
.±
No Charge for Washers?
KEEP U² CoRRo²IoN fREE AND WE'LL KEEp IN CoNTACT!
You may be able to trace battery charging problems on an M113-serIes carrIer
to fur washers.
Watch the Batt-Gen gage±
²F the neEdle's not In the green when tHe ³ngIne's rUNn´ng, you've probably lost
the ground beTween tHe power dIstrIbutIon box and the hull± You can have a good
tIght connectIon, but crud corrosIon or rUst Is rUInIng the electrIcal connectIon±
µo ¶nd out:
RemOve t·e ¸onT pA¹l oº t·e boX»
Re¼oVe the ½u¾ sCrews that mount ¿e boÀ to the ·uLÁ
ÂÃe a wI¾e ÄrUsÅ to the washers, Æhe enD oÇ the stÈds and the Äack oº tÉe ÊËxÌ
Remove the
screws and
wire brush
the studs
and washe±
ReÍSÎÏ t·Ð
box
anD
te
ÑonT PaneÒÓ
.
WIT
tÔe ÕOÀ Ö×undØ ÙÚht, ÛOÈÜ Ýha¾ÚIÞ p¾oÄlß¼ w´ll àe "áasâãä aå
a
±
M³09-Seri´s Sµ H¶witzers ·¸·
Bum ObturaT±r Spindle Nuts
ærçech spIndle nuts,
NSN
5310-è-821é2414, made under contract number
DLA
5èé86éMé5êë arç bummers± ìsIng one wIíl cause a îs¶reï
²dentðñ the nuts by the contract number on the pacKageò ²F the number Is
DLA
5èé86éMé5ê06,
l
a óe to the th¾eadsï Âhen throw the nuts awayò
MaKe sure the spIndle nut Is tIghtô
hERE'² hoW To TELL
¹f NUT² ALREADº
IN²TALLED ARE »k¼
Slot at
5
o'clock,
the nut's bad.
Replace iT!
SlOt at
11 o'cloCk²
the nut's gooD
M101A² HowI³eR ´M Changes
ÂM 9-õ0õö-2÷3éõ2 (27 øeÄ 87) has a couple oº e¾rors Í the
f
control alIgnù
menT tests and measure¼ents seúTIon±
ûn üaÚe 3-7õ,ýüara 6 should reaDþ
6½
POsitioN weapon so tHa³ e´µ of cannoN tube is withIn 12 inches of plumbline
and wi³¶IN
¾¿¿
miLs of cen³er t·vE±e of bottom carriaGe¸
ûn üage 3é8õ, üara 2 should reaDþ
2½
¹Urn cross-Leveling KnoB (1) to centeº cro»¼LeveL buBble
(2)½
½se ¹est ¾arget
Met¶o¿ (PaGe
2À46)
or Àis³ant AimiNG Point Method (Page
2ÁÂ)½
MÃe a note
u±
¿ese ÿs s·ow uĀ
²
an ÈāĂte tO your µM±
dEC 87
11
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