PS Magazine - AUGUST 1983

PS, The Preventative Maintenance Monthly

ISSUE 369

AUGUST 1983
PS Magazine - AUGUST 1983 - Page 10 of 34
Here're some
Before you head oUt in yo±r M880-series truck, make sure the blackout
Light switch is in the SER VIC² DRIV² position. If it's not, your headlights,
brake Lights, taillights, turn signa³s and horn won't work´
Exhaust System
PMCS
Is Weekly
The exhaust system on M880-series trucks needs a weekly visual check´
This was left o±t of the PMCS in C7 to TM 9-2320-µ6¶-10. ·eaks make the
truck Not Ready/ Available´
TeL YoUr DS AboUt JUnction Box BReaker
Circuit breaker kaput in your M880-series truck's commo power junctio¸
box? Your OS replaces it with NSN 5925-01-138-4954.
Sharpen YoUr ±Ubing With Needle-Nose Adapter
Does your M880-series truck have a flush-type lube
¹
fitting in the
centering ball in the front prop shaft? If so, you need a needle-nose
º
adapter
for your grease gun» Without it, you can't get to the fitting, and prop shaft
failu¼e is j±st around the corner. NSN 4930-00-200-1841 gets one for 65
cents.
St²ighten OUt Fex TUbing NSN
Get the flexibLe exhaust t±be for the compartment heater on your
M886/ ½893 ambulances with N¾N 4720-00-278-8015´ The pipe has an
ins¿de diameter of
I
\ inches. The NSN in the -20P is wrong.
³ep´aCe Spoµight Swi¶ch Only
The spotLight switch on your M886 or M893 1 \-ton ambulance on the
bLink? Don't order the complete spotlight assembly. Àse NSN 5930-00-392-
5002 to get a new switch.
Thermos·t Has ¸S¸ .
.. BUt .
..
The part n±mber for the thermostat in TM 9-2320-266-20P, Fig´ 21, Item
2,is wrong´ÁNSN 6620ÂÃÄÅ8-1251 (ÆSCM 86403 P/N 3418459) gets the Çight oneÈ
The NSN's not on the A½DF, but it's coded "· ÉÊr loËl purchaseÌon the
½·-C. No local source? Írder on a DD Form 1348-δ PutAdvice Code 2Ï on the
reqÐest. TelL s±pport the source of supply is FHZ and the cost is $Ñ´85´
16
M919 Concrete-MixER .±²
Head Of
Gear Box WeaR!
Íverrevving yo±r truck engine while you're
mixing concrete is Òad Óews´ High revs cause
extra wear and early failure of the angle drive gear boxÔ
Yo± can be foo³ed by the instructions in ÕM 9-2320-273-10. The Ca±tion
on Page 2-56 says the
Ö
maximum is 2100 RPM´ ×ut that applies to the
tachograph in the cØb´
Ùhen you start mÚking concrete, go with Ûhe word in TM 5-
389
5-372-10.
Para 2-12d caLls for 1620-1720 RPM's on the mixer taÜhometer during
operation.
So, save the ÝPM's for the race track and save your gear box.
m³´5SµRI¶s TRucks ·¸¹
Þote 7(b) of ·Í 9-
2320-273-12
says
to
changß the transmission
case
breather,
NSN
50,000
miLes
or
12
months. That's wrong.
The straight àcoop is
in
the
same
note
á
âchange
case
breather
if
required.ã
Which
means you only repLace
it if it's cracked or broä
ken´
Bo±t ScrEw NSN
åse NSN 5305-00-984-6200 to get a screw for the steering k¸uckle dusæ
boot on yo±r de±ce-and-a-half oç 5-tonner´ You'Ll get a s±bstitute whe¸ you
order NSN 5305-00-752-1693 from the TM. The substitute is not threaded
enough to tighten the clamp.
17
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