PS Magazine - MARCH 1982
PS, The Preventative Maintenance Monthly
ISSUE 352
MARCH 1982
Pmp ±ressurE ²roblEmS
'
Have you blown the seaLs or gaskets
in thE dispensing system of your M49-
series fuel tanker or M50±series watEr
Or maybe the discharge manifoLd
has cracked or the pump has faiLed?
ProbLems like these are caused bY
too much preSsure in the discharge
system. ²ou get this when you operate
the systE³ in too high a gEar or by
running the engine too fast´
If you use a 1-in nozzLe to pump gas
iNto an M880µseries 1¶/·ton truck, you
cAn add to the woes¸ The smaLler
nozzle restricts fuel fLow and runs up
the pressure in the sYstem´
¹oLution? ¹Low down the pump! If
your tanker has A multiFueL engine, use
second gEarºno highEr! ThAt's thE
word on Pages 4±132 and 4±187 of TM
9±2320±209±10±1.
.-±l²:³´
If your tanker's got a gasoline
engine, use 4th gear, like it says on
Pages 101 and »03 of TM 9-2320±209·
»0¼
½ever overrev the engine´ UsE the
hAnd thro¾tLE to sEt the speEd. Pull it
out aLL thE way¿sLowLyÀ ²anking it
out couLd cause a pressure surge thaÁ'LL
do in your equipment:
½Âver try to increasE the deLivEry
Ãrom your system bÄ upping the speed
or running in A higher gear. ²ou won't
get that much more, and Your equipÅ
ment won't take it. Do it by the book
and
h
ead off pumÆ pressure probLe³s´
10
•
DrilL anotHeR Y-in HoLe IN tHe
bottom centeR of tHe reacH tube 1 Y
incHes f±om tHe Rear reacH Tube
pLate.
Getting thE tubELEss tires to seat on
thE rims aÃter chAnging or repairing
tires is a ÇAssLE.
Use tirE coÈstrictor tooL, ½¹É
2590±0»µÊ38±3865, to sEat thE
Ë
tire
ITire
constrictoR tool
against thE rim. ÌpÍEnÎix Ì, CÏÌ 5ʱ
97Ê, is your authority to gEt the tooL.
The tooL has a 6Ðin widE st
Ñ
rap thAt
F;²³=´µ¶
you wrÒp ÒrouÓÎ
Ô
thE tireÕ Ìs you
inÃLate thE tire, thE straÍ squEEzEs it
-
:;±²³´µ
agAiÓst thE rim. Öt's sÒÃE; it's EAsy; it's
11
ti×EsAving.
ÏhE tooØ wiLL work oÓ AÓy sizE tirE
on any Ìr×y vEhicLE.
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