PS Magazine - JANUARY 1973
PS, The Preventative Maintenance Monthly
1973 SERIES, ISSUE 242
JANUARY 1973
ABOUT
tHa± GE²R C³Se LIb´
LY! l,±²
WHEN . ChtK ITe
LUBE
leVe±
,
i±'
OK
au-
rntN T²
lLSPC1±
SAYs
IT
³o
Aw, come on Now-some of you guys
.re fRettin' and stewin' too much about
geCting youR geaR case lube level Right on
the mark±
You get all uptight just because a littLe
oil dRibbLes out when you²re checking
the
I
ube level oN youR tactical tRuck± So
SuRe, if the oil gushes Out when you
take out the fil³ plug, it may mean that
Did you know that G´
90 expands
about 15 peR cent foR a 100µdegRee Rise
within its noRmal opeRating tempeRatuRe
Did you know that the tempeRatuRe in
youR geaR case may hit 300°F, oR even
highER,
undeR
normal
opeRating
coNditions?
Did
you know that hot oil gets
all
frotHy ¶n' foamy with those gears chuRn·
someone rammed in too much lube last
ing it up?
time the gear case was fiLled±
:
•
iI
±
l²-³,´Lµ¶·¸¹º
1
It may mean that¸and it may not± It's
j
J- ±=
Not easy to overfill a gea¹R case with a side
fil³ºcheck ho³e, buT it can be done±
r-±²³´µ
¶·¸
First,
though, let²s take a good, haRd
look at the facts±
8
So what do you expect when you take
the plug out of a fuLL, hot geaR case?
F²LL²nG AnD c³´ck²nG
When you fiLL youR geaR c»se the Right
way, you c¼n't poss½bLy wind up with too
much Lube ½n theRe±
¾emembeR, pump in the Lube slow ¿n'
easy± G´
is pRetty heavy stuffÀ
If you
pump too haRd ¿n' fast, you can pile up
G
in youR geaR case± Áhen, Âf you sLap
the plug back in quick, youR geaR case is
oveRfulL±
AlÃays wait a bit after you've filled
youR
geaR
case±
Give
the
extRa ³ube a
ÄhaNce to run back out so your level's
Right even with the bottom of the fill hoLe
±
Áhen put
!
n youR plug¸tight±
When you²RÅ checking the lube level iN
a cold gear case, you can usually f½guRe
tÆat
inchÇ below Èhe filL hoLe is ´K±
You'Re bound to lose a littLe oveR a stretch
of time±
Stick your pinky in the hole to the f½Rst
joint± Bend the t½p of youR fingeR down±
You shouLd be able to dip the end of youR
fingeR into the lube± If not, youÉRe Low on
lube± Add some±
9
BuÊ, beËoRe you check oR add, get ouÊ
the LubRicat½on oRdeR foR youR equ½pmentÌ
If ÍheRe' a moRe
Î
exact measuRe foR youR
geaR case lube level, the Ï´ wiLl p½n it
down±
µOO MUc³ ²S BAD
ALl this dope doesn't take you off the
hook, though± You²ve still got to make
suRe you don't really have too much lube
in your geaR case±
With aLl that heat and expansion, an
overfu³l geaR
case caN b³ow seals± ÐNd
youR
bReatheRs
oR
vent
lines
can
get
plugged up-then youR seals aRe sure to
b³ow!
Does this Remind you of someÊhing?
You betÑjust as important
Ò
as having
enough ³ube, but not too much, in youR
geaR case-make suRe youR breatheRs oÓ
vent LiNes are cleaR±
Áhose
bReatheRs,
especially,
can
get
plugged with mud ¿n' muck± Ôheck 'eM
Real often± Give the cap a twist to shuck
out any diRt± Áhen CaP it a couple of times
to make suRe the spR½ngÕLoadÖd valve in×
side is woRking ´KØ
Ùo good? Áhen puÊ ½n a new one¸it's
¿n'
cheapER than ReplaciNg
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