PS Magazine - FEBRUARY 1981

PS, The Preventative Maintenance Monthly

ISSUE 339

FEBRUARY 1981
PS Magazine - FEBRUARY 1981 - Page 3 of 35
Wrong air hose hookup wIll wreck the brakes on your 2-wheel trailer faster
than you can say, "Wrong hookup kIlls brakes.±
Wrong air hose hookup locks the trailer's brakes² This can burn 'em out and
tear uP your trailer's tires .
³
Always hook up your trailer´s air hose to the truck´s SERVµCE air coupling² µf
your trailer is equipped with 2 aIr lInes, the emergency air line hooks up to the
EMERGENCY coupling on the tow vehIcle² To do this you must always
crisscross the trailer´s air hoses beFO¶· hookIn
2
IdentificaTioN Pla±es
¸¹ Hºl» ¼¹U Kºº» tHº coU»li½¾s straight, make sure yoU¿ trucÀ has thº ÁigHt
Âi¿ c¹U»Li½¾ idº½tificati¹n »lÃtºs²
ID Plate
EMERGENCY
SERViC±
21/-ton truck
5-ton truck
NSN 990²³00´774µ¶·84 NSN 990²´00¸999¹7369
NSN 990²º00µ740º97·» NSN 990²¼00º999º7370
µf you have a trailºr with o½ly the se¿vice Âir hosº, ste½cil on the t¿aiÄe¿'s draÅ
Bar this rºmi½dºr: CÆNNÇCÈ TÆ SERVµCÇ AµR ÆNÉY² ʺfo¿º ¼ou maÀº
with thº »ai½t, tho, gºt your commander's Æ˲
Brake LiNe ²NspectioN
Aftºr hooking uP, cHºck thº air Hosºs for damage and inspºct the couPÄings
f¹r air lºÂÀs² With thº BraÀºs aPPLied in tHº t¹w veHicle, use a soaP Ând watºr
soÄution o½ tHº SÇRVµCE air coUpling and Âir Hosº fitti½gs² No lºakage is
·
ÂLloźd² Ìf ¼ou ¾ºt ĺÂkage around tHº
couPling, cHeck the rUBBer PacÀing ring²
MÂÀº sUrº it is sºatºd i½ tHº traiĺr's hosº
cou»Äing and not worn or torn² µf tHº
ruBBºr ¾ÂsÀºt is Bad, ¿º»Äacº it witH
NSN 5330-00Í090Í2128²
½h¾¿K
ÀUbb¾À
gAsK¾T
A cĹ¾gºd air filtºr Åill Put your traiLºr's BrÂÀes out of opºratio½² Drai½
m¹istU¿º f¿¹m thº ai¿ filtºr assºmbly and rºm¹ve and cleÂn the filtºr elºmº½t²
Ìf it's ½ot do½º it's sure to causº ProBĺms²
Îsº ÏD 680 dr¼cle½ing soÄvent to
clean the filter assºmBLy a½d thº filtºr
ºLºmº½t² NSN 6850-00-664Ð5685 wiLl
gºt you  quÂrt² ɺt thº Âir fiÄtºr assºmBl¼
»Ârts dr¼ Bºforº yÑu PUt thºm BacÀ
togetHºr²
3
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