PS Magazine - OCTOBER 1974
PS, The Preventative Maintenance Monthly
ISSUE 263
OCTOBER 1974
i
Silent servanTs, that's what they are.
I
You never heaR of them unless some-
±²
thing goes wrong. NeveR know they³re
theRe. Unseen, undemanDing, like perime´
teR guarDs of a night iµ a far country¶
But those foRgotten sheaR pins can save
your neck, your equipment, your life ·.
.
if you Doµ¸¹ Double-cross them.
ºake road gradeRs, foR instance. Cat
12'
s
have a Drive Protection On ¹he shaft»it¼½
Item
±,
Fig
83²
ºM
5-3805³´08-´0P.
It
'
µ¶·¸
-
¾naps when hi¹ too harD, anD i¹ keeps thE
±
/
.-
whole power assembly from ¿ying intÀ
d
Áachines anD 40 HÂ ou¹board engines anÃ
sÄraPnel Årom ex¹Æeme misuse. Çr take the
l
nÀ eÈÉ Àf À¹heÆ Places, ¹hose shear pins are
WaÊËÀ 440HAÌthe shift LeveR will bReak
i
Í
Î
Ï
Ð
_
t
_
h
_
e
Ñ
jo
Ò
Ó
Ô
ÕÖ
×
ØÙÚ
Û
ÜÝÞ
×ß×àá
â
ã
rather
¹äåæ
let you teAR up
å ¹çåèéêiééiÀè
anD RolL to DisasteR.
ÇÆ say i¹¸s ËÀlD weatheRëSnoGo snowì
Plow ÊlÀwers have a sheaR pin to keep the
ÀPeRator Årom geíting a face full of iceîcold
sÄattereD me¹al in Ëase the rig hits a soliD
ïlock. ðnd on blade lift gears and ditchinñ
òR you might say, theyóre theRe, but betô
¹eÆ they never have to do their Jobõ Because
when thy Do Do their thing, theyóRe goneRs
..ö Like ÊuÆnÀuts in a Åuze box, ÷itós all oVer
ÅÀr øhem. If ¹hey haDnót beeµ there, itùD be
aLL Àver fÀR the equipment anD maúbe foR
¹he guy ÊehinD i¹.
But, ûeLieve i¹ Àr no¹, some cats foul uP
¹hü sys¹eê. MostLy fÆom knowing no bet´
¹eÆ, ¹Äey Put in Pins or ýolts tÄat "will last
LÀnþeR,ÿĀ ÀÆ āholD ïetterĂă ĄÆ worse yet,
¹Äey Pu¹
in
wha¹eveÆ Pin happens ¹o ïe the
çiþĹ siZe, anD hanDy.
ÂeÀPLe whÀ Put Pennies behinD electrią
ĆaL ÅuZes će¹ simiLaR results: ¹he hÀusĈ
ïurns Down.
ĉÄe ÄåÆD wÀÆD is, ¹he only
WFY
to be
ĊåÅe is ¹À use ċÀ suýstitutes for the pin oR
ČÀLt in yÀuÆ č20Â ĉM. Maybe it wonót even
ĆåLL it å sheaÆ Pin. But ýe suspicious of a
Key ÀÆ Pin ÀÆ ĎÀlt ¹hat seems too small foR
ď
¹he slÀ¹, Àç ĆÀmes painteD a DiĐerent coloR.
YouÆ silen¹ sentry on the Perimeter ođ
equipment failure canót Protect you if heĒs
not there.
6¹
6º
Back to Top Back to Top
