PS Magazine - OCTOBER 1981
PS, The Preventative Maintenance Monthly
ISSUE 347
OCTOBER 1981
L
. I
'
Pity that poor lower radiator hose
on lots of water cooleD engines.
It gets the worst of the deal all
around. It takes a beating from brush
and fly±ng rocks in cross-country
operat±ons. It's always Carrying the full
weiGht of coolant so it's under greater
strain than the top hose. Then,
because of that stra±n, it poops out
quicker when rubber rot sets in.
It's easy to overlook the lower hose
during inspections beCause it's out²oF³
sight, out´ofµmind. So the first CLue of
troubLe is the hose blowing out from
rot and pressure. AlL, or most, of the
Coolant's lost¶including mighty exµ
pEnsive ethylene glycol an·ifreeze.
If someone's not around to notice
¸¹º
the lower hose blowout and shut down
the eng±ne, the engine may seiZe up»
rEsulting ±n serious damage to thE
engine.
It's easy to head off r¼diator hose
problems½both top and bOttom
hoses. Your eyes and one fa±rly strong
hand are aLl you need.
¾racKs or leaK±ng, of Course, are bad
signs. ¿et that hose replaced!
¿rab ahold of the hose and squeeZe.
It should feel spr±ngyÀnot hard or
brittle, not mushy.
,
/
/±²'
A harD hose can break. It can even
causE radiator
Á
damage by carry±ng
eng±ne vibrat±on to the raDiator.
A mushy hose Âs rotÃEn. If it doesn't
Look rotten on the outsiDe, you can be
sUre ±tÄs rotteN inside. The hose is
hEaded for a blowout½but, ±n the
meant±me, piECEs of rotten rub er are
BEiNG Carr±EÅ ±nto thE
Æ
EngiNE CooLÇnÈ
systEm. Éh±s stUfF w±LL pLUG Up tHE
CooL±nG
sÊstEm
anÅ
ovErHEa˱nG¶and
probaBLy
tHErmostaË fa±LUrE.
Ì MaKE sURE hosE cLamps arE tiGht.
SomEt±mes thE onLy Cause of
a
LEaK is a
LoosE, broKEn or m±ssing ÍosE clamp.
ÎhErEÏs a lot of prEssuÐe
Á
±n your
eng±nE coolinG system. ÑosE clamps
must bE tight. ¾areÒÓl, tho, so you
don't oveRdo it and Ôut into the hos Õ
When you're t±ghtEn±Ö× those CØamps.Ù
Úhen you ±nstaLL a neÛ hose, use
sealant¶just a l±ttlܽfor extra inµ
Ý
sUranCE aGainst lEaKs. ALso, thE seaLaNË
maÊ hELp prEvEnt aN EXtraÞ LonG
CooßanË HosE
à
From com±nG ofF at ËáE
ENd ConnEc˱oNs.
âsE NonµharÅEn±nÈ sEaLanË,
NSN
8030-00±252±3391.
SãEaR ±t L±GhËLÊ on
thE ±Ns±äE oF thE HosE EnÅåBotH
æ
ENdsÀaNÅ oN ËhE oUËs±Åe oF ËHE
RaűatoR aNÅ ENGçNE CoNnEC˱nG èo±nts.
éEt tHE sEaLaNt ÅRÊ. ÉhEn sL±p oN ËHE
hosE aNÅ tighËEN thE ClampsåsnUÈê
ALWays insèECË Raűator hosEsÀanÅ
thE REst of yoër CooL±NG sÊstEã¶ìr
LEaKs both BEForí înd ÅUR±NG EnG±NE
opErat±oN. A LEaK
.
ãaÊ s
.
HoW ëp o
³
LÊ
±
WhEN prEssërE ïUðLÅs ñp ò thE CooLòG
ó
.
CARI!
A FInGER CUgHT
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