PS Magazine - JUNE 1981
PS, The Preventative Maintenance Monthly
ISSUE 343
JUNE 1981
JI
I
I
j·
If
·
your mobile concrete mixer's
engine fan k±cks in-or
o
ut-whiLe
you²re mixing cOncrete, you'lL LikeLy
rU±n the LoAd. ³t's real important that
the mixing speed stays stable During
the CompLete mix cycLe.
S´, before you set up to mixµ flip up
the engine fan cLutch overriDe switch
to ¶N. The switch 1s besiDe the
concrete mix-ruin it.
Here's why. The engine Drives the
power take¸off (P¹¶). The PTº is the
Direct mecha»icaL Drive for the sanD
anD sto¼E augerµ the cemenRbin auger
anD Meterµ anD the Dry aDmix auger
a½D meter. The mai¼ DriVe beLts turn
the water anD hyDrauLic pumps. ¾
chanGe in engine ¿PÀ wilL affect the
PT¶ speeDµ which changes Áhe rate of
mix of some ingreDients but not
others. Âhanging the engine ¿PÀ
makes it impoÃsibLe to controL the
quality of the cement. ³n shortµ it
makes a mess.
You
Ä
have to use both of yÅur
Æ
operator's TÀ's to finD thiÇ pOop.
',±_95.7·:10
transmission shift tower È on the
±
-²³
´µ¶
"·¸
¹º
»¼
½¾¿
À
consoLe. Éhe oerriDe keeps the fan
engageD during the mix cÊcLe.
¹he À9Ë9 hÌs a thermostaticaLLy
controLLe͵ air¸activateD fan. ³t norÎ
maLLy Does not operate untiL the
ÏOoLant temperature reaches about
Ë90° F. When the cLÐtch engagesµ it
taKes about 40 HP to get the fan
starteD turning. This'LL cause a Drop of
aLÑost 400 ¿PÀµ which Lasts 2¸3
minutes. ¶rµ if the fan is running anD
it kicks outµ you'LL Òet an ¿PÀ Óurge.
ÔteÕ
(2)
Öa× on Õage ØÙÚ9 Ûn ÜÝ
5-
38
Þ5Ù
3
7ß
-
Úà teLás âou to Jãäå uÕ tæe
ençine èénê
ÔteÕ
4
ë¼ Õìge íÙÚî in ïÝ ÞÙðñØòÙ
ØóñÙÚò ôeLLs õou aBout e¼gìging
th
èìnö
ÁÂÃÄÅÆÇÈ
20
.
M915/m920
Security
The security of y÷ur À9ËøÙseries commerciaL Design tùucK is a Little Loose
when the key to one úruck works on aLL others in this fLeet. ûut you can aDD a
chain¸anDÙpaDLock for steering wheeL security. See the inütructions in
T
43Ù
000ËÙ39Ù3 (¶ct 80).
WRecke± Ti²e P³essu²e
Your ÀýË6 5Ùton wrecker trucå is too heavy þr the ÿ0ÙPS³ highway front
tire pressure specifieD in TaĀLe 2Ù5µ Page 2Ù29µ TÝ āÙ2320Ù260¸Ú0ÙÚ. So
increase the front tire Õressure to ý5 PÔ³. The worD is oĂt in T¾Â¶À Àsg
ă¿STĄÀ Ë0Ë500Z ăeä
80.
HulIng
a Load?
ąeĆi¼ć õouĈseĉè tæìô ĊċìçiLe ČìĈôs ¼eeč ÕĈoteäôion čuĈing tĈansÕort Bõ
ôacåing uÕ Ďď ĐosteĈ
750:68±
A
đĈĒäesseč Ďď ēĔĈĆ ĕ56Þ Ėr ûaLôimoĈe Đubs
ėenteĘ gets it.
Oi I
Water ´eparatorµ
NÔN 4940Ù0Ú¸03ËÙÿ2ø9 gets a ¿epair ęitĚĆetaL seDiĆent bowL anD
gasketsĚto repLace
Ä
crackeDµ Leaking or Ćissing pLastic bowLs on your ěcLipse
moDeL separatorsĜ NSN 4940Ù00Ù242¸4Ë0ò a¼D Ù242Ù4Ë0Ú.
The kit number is not on the ¾Àăē. ¶ĈDer on ăă Form Ë34ýÙ6µ aDD ¾Dvice
ÂoDe 2F in ûLock 22 anD use ûË4 as the ą³Â.
¶anlCe·
M
e
t
e
r
NSn
ēĒĈçet ôæe ĝÔĞ èğĈ "ÝeôeĈĠ ġoĉĂĆetriäĢ sģown Ĥn Õìge
C²48, T
ÞÙ
2330
É
ĥĦØÙħĨĩ Īeô ôæe meôeĈ èīĈ ôæe ÝĬĭħĮÃeįieà ta¼İeĈà ıiôæ ĝSĝ
6680³01´036-
6µ3¶·
IJtijs ôæe sìĆe ĆeteĴ aà ôĵĶ oķĸ on ôæe ÝÞĦò ôìnåeĈÃö Ĺæe ĝÔĝ sæows uĺ
on ôĻe ďÀĎē But is tìçļeč witģ ôæe wĈo¼g ¼oĆenäLature.
21
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