PS Magazine - NOVEMBER 1983
PS, The Preventative Maintenance Monthly
ISSUE 372
NOVEMBER 1983
Drain Holes
Save Bumper
If your M871 semitraler is one of the
Fst produced, you mAy hAve A rust-out
problem.
The dock bumper thAt runs ±ush
Across the bAck of the trAiler bed is
hoLow And c²n collect wAter. On
M871's with seriAl numBers between
NX03MQ³M87´-µ¶´ And Nx05CS-
M8·1-¸97¸there're no drAins. So hAve
"
your mecHAn¹c drill thRee \-in holes in the underside of tºe bumper» 6 inches
·
¼o½ eAch side of the trAiler And 45 inches ¼om the left side.
M128
&
M129
Semitrailers .±±
BOaRing Ld±er Fix
_
¾
¿
Àook Ár broKen or missing r¹Vets on
your boArding lAdder! The riVets AttAch
the steps to the side rAÂls.
To heAd oà A broken step »
And An
Accidnt »
get your mech to weld A
1/8Äin beAd where the step joins the side
rAiÅ. This cAÅls Ár welding rod of 5356
.±²³´ =-!
fl
metAl like NSN 3439-Æ-8¸3-9498.
14
Use Adter foR
WE
T
To Çorque inner wheel lug nuts on yoUr M´72-series semitrÈer, you need A
socket AdApterÉ
Get one with ÊSCM ´92¸7, PN ´´66254´. Ët'Ìl leÍyou Use Îhe
1
Ï-in sockeÎ,
NSN 512¸ÐÆ-293-Æ94, ¹n the No. ´ Common Shop setÉ
Tighten the inner lug nut to 3Æ-35¸ lb-fÑ And the ouÎer nuts to 45¸Ò5Æ lb-fÎ.
I²pRov³´Ed Lug WREnch
Your support
c
FI
lug wrench, NSN 512¸-Æ-3´6-92´7, so it'll Ót the inner
nuts. Ôse this if you need to chÕnge A tire on the roAd. TheyÖll cut ×ff pArt of
the heØ end, weld on A piece of tubing And put them together AgAin like this:
45°
bµVµ¶ (A¶¶ ·AT¸NG µDGµ¹)
-3t4"1±l²³²´sµj¶
<.±
,
c
+ (+I
=
Mº7»-Series Semitrailers ¼±.
Get the ²Ig³t ´a±bin±er
Ùou cAn't get tHe loADÚÂÛDer, ÜSÝ 39Þßàá·â·, listed in TM 9ãä33¸å
ä11æ1âç InsteAd, èSN 399¸-éã1·1ãê·ëì gets íou
a
bÂnDer tHAt îts 3ï8 to 1ðñãÂn
òHAÂÛç
±5
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