PS Magazine - MAY 1985
PS, The Preventative Maintenance Monthly
ISSUE 390
MAY 1985
Twin-Jet Bridge Boats .±²
KeEp Cool Times FlowIng
Sand and trash can get thru the raw water iNtake screens on your twin-jet
bridge bOat and Damage the raw water pumps.
Sand and grit wear the impellers Or cams± TOO much wear and the pumps
can't mOve water like they have tO² TheN the engine overheats±
When engine temperatUre gOes up, clean the raw water intake screens± If that
dOesn't dO the jOb, get YOur mech On it±
When you Operate in shallOw water,³ Or if the water's silty, mOre sand gets
thru and parts wear FsteR± The pumps cOuld be
·
shOt lONg be´re the 200-hr
inspectiOn called ´r iN TM 5µ1940-
277µ¶0± The TM is going tO
b
Changed.
¸Ou mechanics
·
¹eed to check them
:
every 60 hours±
A
bad impeller Or caº
may need tO be replaced±
If
yOu
mechs
»nd
a
chewedµLp
impeller, check the heat exchanger ´r
¼
.
clogs± Bits of the impeller get caught
there and cut down the ½Ow Of water.
52
A Dra±n±NG SoLutio²
¸ou've
got
to
dra¾¿
yOur
bOat's
iI
engiNe brEather trap when yOu pull
the PMÀS.
But sOmetimes the drain plug seizes
and you run the risk of Damaging the
threads when you remOve and replace
the plug±
¸our mech
c
make draining eaÁier,
thO, by replacing the plug with bushing,
ÂSÂ
4730µ00µ202µÃ91,
and
drain
cOck, ÂSÂ 4820-00-555µ9761Ä They
are part of the brass »tting kit in the
ÂO± 1 Àommon shop set±
l.
L±²;³«:´
µ
¶
J
\
·
¸
'
¹º »
Ten³ Pole Repa±´ Ki³
ÀaN't get yOur telescopic tent pOle together ´r lack Of one Or bOth lOckÅg cÆips?
ÂSÂ 8340-01Ç176µ64È gets a new lOck repair kit that cONtains bOth an upper
and lOwer lOcking clip and twO retaining rings± The kit is ´r the telescOpic tent
pOle, ÂSÂ 8340-00µ188Ç8413, ON either the M1950 lightweight hex tent Or the
arctic tent±
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