1
\
! 
\ 
Head of possible steering wheel Lockup on your M939-serIes 5±Ton 
1 
I 
truck. 
I 
GeT your mechanic to ²ke The pin and spring out oF the ³rn signal seLF-
.i 
cancelling assembly´µtEm 2 on Page 5-139 oF ¶M 9-2320-272-20-1. ¶he mech 
may neeD to lower the control on th· sTeerINg colum¸ to liFt the cover¹ ¶he control 
will no longer be selFºcancEllIng, buT 
It'll be saF»r¼ µF you need a new con½
Trol, don'T order ¾e selF-cance¿Àing con½
trol, 
NSN 
6220Á01-089Â3Ã9, in ¶M 9Â
2320-272-20P. µÄtead, get 
NSN 
6220º
00Â808-Å072. Æ's 
Ç 
noT selF-cancelling 
and it's a lot cheaperÈ µt's goT to be 
mounteD below the cancelLing pinÉ
µTem 3 On Êage Ë-139 in the -20Â1 ¶M. 
24 
JAN 85 
WAÌer IÍ Ìη ÏI·S·Ð ÑeÐ IÍ YÒUr CÓCV ÔAÍ DAÕAÖ· Ìη ·ÍÖIÍ· IF IÌ Ö·ÌS ×ASÌ 
ÌØ· Ñ·L FIÐÌ·r. 
WÎ·Í Ìη "WAÌ·rÙIÍÁÚU·ÐÛ LIÖÎÌ ÔÒÜ·S ÝÞ, It Õ·AÍS Ìη ßAt·r ÌrA××·D IÍ Ìη 
àIÐÌ·r Í··ÏS DrAIÍIÍÖ. µF YÒU ÏrIá·rS ÏÒnâÌ DrAIÍ Ìη àIÐÌ·r, ItâÐÐ àIÐã U× AÍÏ ßAÌ·r 
ßILL Ö·t IÍÌÒ Ìη ·ÍgIÍ·. WAÌ·r ßIÐÐ rUIÍ tη Ñ·Ð IÍ
j
·cÌÒrS AÍÏ äIÍ
j
·cÌIÒÍ ×UÕ×. 
årAIÍ Ìh· æÐter AÍY ÌIÕ· tη ßArÍIÍg ÐçÖØT ÔÒÕ·S ÒÍ. èÒé AÐSÒ ÏrAIÍ Ìη àIÐÌ·r 
ÏurIÍÖ YÒUr W··KÐY êëCì. ¶Ø· DrAIÍ ×·ÌcÒcK IS Ìη tÎUíBßη·Ð ßITÎ TØ· 
rUBB·r ÎÒS· ÒÍ Ìη BÒTÌÒÕ ÒF ÌÎe àîÐÌ·r. 
¶ë 9-2ïð0-2ñ9-ò0 IS SÎÒrÌ ÒÍ Ìh· ßAY ÌÒ ÏrAIÍ Ìη àILÌ·r, ÌÎÒ. 
Here
'
s how: 
• 
R·ÕÒv· tη Ñ·Ð óôK cAp. ¶ÎIS Br·AKS Ìη vAcuUÕ IÍ Ìη S·AÐ·Ï SYSÌ·Õ 
Ìo ÐeÌ Ìη Ñ·Ð ÏrAIÍ . 
• 
õeÌ A BuÏDY Ìo ØÒLÏ A cÐeAr cÒÍtAIÍ·r uÍÏ·r Ìη Ñ·Ð ÏraIÍ ÎÒS·. µÌâS Ìη 
röBB·r ÎÒSe SÌIcKIÍÖ ÒUt IÍSIÏ· Ìη rIgÎT àrÒÍÌ ßη·Ð ß·LL B·ÎIÍÏ Tη Axз BY 
Ìη S×rIÍÖ sØaÔKз. 
• 
Ý×·Í Tη DrAIÍ FIÌÌInÖ ÒÍ Ìη ÷ÒTtÒÕ Òà th· àIÐÌ·r 
12 
ÌÒ ÒÍ· ÌUrÍ. 
ø 
, 
·
:ri
"
± 
( 
• 
ìÌarT Ìη ·ÍÖIÍ·. When Your BUDÏY S··S oÍLY Ñ·L coÕIÍg ÒUt, sÎuÌ DoßÍ 
Tη ·ÍÖIÍe. Wat·r SÎoßS up aS A cзAr Òr ÖraY Ðay·r uÍDer tη Ñ·L. 
• 
CloS· the drAùúûÍg·r ÌIghÌ, oüÐY! ¶ÒÒ ÕucÎ ýrc· ßI¿L BreAk Ìη ûÌÌIÍÖ. µF 
yÒU ÔAÍâÌ ÖeÌ Ìη þeL sÎut oÿ, caĀL YÒUr Õ·cÎAÍIc. åÒÍâÌ US· ×ÐI·rS on Ìη æÌÌIÍg. 
• 
R·pÐac· Ìhe Ñel óÍK cap. 
• 
åoÍâT us· ÌÎe ×LuÖ on Ìop Òà Ìη FILT·r Ìo DraIÍ ßAÌer. ¶ÎAÌ pÐuÖ IS US·D 
To bÐe·D aIr ārÒÕ tÎe Ñ·l SySÌeÕ. 
JaN 85 
25