PS Magazine - TB 43-PS-434
PS, The Preventative Maintenance Monthly
ISSUE 434
JANUARY 1989
CALIBRaTE tOre W±²NJ£HS
. :
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¸¹
º»¼½¾·_,¿
_
±
.
et's say your TM telLs you to torque
is your ±MDE shop fOr caLibra²ion.
a nu² ²o 45 Lb-Ft, but ²he boLt snaps at
They wilL caLibra²e the wrench and put
40 Lb-F².
on a caLibration stickeR, DA ³abeL 80.
Was ²he boLt bad? ´R was the caLibra-
The sticker ²eLLs when the wrench was
²ion on yoUR torque wRench oµ¶?
caLibR·ted an¸ when that caLibration
CouLd be either, but you need ²o have
expires.
your wrench checke¸. The torque
r
=
:±u_s;²
.•
;
•³ ´µ
v¶·
c.¸¹Uº
»•¼½¾R¿ÀoÁ,ÂÃÄmÅÆu
dzÈÉÊÂËÌÍÎÏ
vaLue shown on ²he wrench can be oµF
as much as 50 percent. That means
when your ²oRque wrench reads 40 Lb¹
Ft, you aRe appLying up to 60º
Torque wrenches do not co»e caLi¼
brate½. The firs² stop ¾r a new wrench
Never use a torque wRench tha²
doesn't have a caLibra²ion sticker. Sen½
it F¿r caLibration pronto! Same goes iF
²he expira²ion da²e is passed.
A ²orque wrench is a sensitive instRuÀ
men². Many things can thRow oÁ ²he
caLibra²ion, Like dropping i², using i²
¾r a hammer, letting it bounce around
in a tooL box, or treating i² Like a regÂLar
wrench. ´ne goo½ joL² and i²'s go²ta
go back ²o TMDE ¶¿R caÃibration.
5
2
JaN 8
9
MT-250 Boom Indicator Cable Change
U
se CAGE41625, PN 304241-5-Ä02
²o get the cabLe used on the MT-250
crane's boom angLe indicator. The
NSN Liste¸ ¶Or the cabLe, Item 1Å in
Æig 97, has been ¸Roppe¸ and the part
number Listed is wrongÇ ´rder ²he cabLe
on a DD ÆoRm 1348-6 Èom ÉÊC S9C.
_.
Generator Door Latch
NSN
-
T
M 5Ë6
l I
5Ë464-24P fOR ²he Ä5-KW
Ìenera²or an½ 5-61Í5-465-24P FÎr the
30ÏÐW generator ¸o not Lis² a door
Latch. You can get ²he Latch FOr both
wi²h NSN 5340Ï00Ï229Ï3643 Ñ
5-KW Generator Cover
NSN
T
he cover Listed in TM 5Ï6115Ï365Ï
Ä5 FOr your PÒ-620/M generator on
the M 1
i
6A Ä Ó-²on ²raiLeR won'² fit.
Ôet a cover ²hat wiLL Fit wi²h NSN
2540-00Ï926-0993.
Common Shop Sets ÀÁÀ
ToRque Wrench Added
W
hen you need to ²ighten a boL² iÕ ²he Range oF 15 to 35 Lb϶Ö, the ×7Ø Lb϶²
²orque wrench in the No. 1 and NoÙ 2 Common shop sets won't hack ÚtÑ Ût's
just no² accuRate enouÌh in the bottom 20 percent o¶ µuÃÃ scaÜe.
Ênstead, get a ÝÏin square dRive 15 to 75 LbÏFt torque wRench, NSN 5120Ï00-
554Ï7292. Êt gives you accuRate toRque rea¸ings be²ween 15 an½ 60 lbÏFt.
It's goinÌ ²o be showinÌ Âp in the No.
i
and NoÞ 2 Co»mon, but in the
meantime, use Appen¸ix A o¶ CTA 50-970 as youR authority to oRdeR i².
i
Use smaller torque wrench, NSN
Â1Ã0Ä00ÅÂÂ4Å7ÃÆÃ
1
JÇN 8
9
5
3
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