PS Magazine - FEBRUARY 1985
PS, The Preventative Maintenance Monthly
ISSUE 387
FEBRUARY 1985
For want of a 07, you scrub the mission.
The inner wheels on ML72AL semitrailers are held in p±ace by inner wheel
lug nutS. Then come the spacer, outeR wheel and outer wheel lug nuts²
³ome mechanics think that only the outer ±ug nuts have to Be tight. Not t´ue!
Those nuts only holD the spaceR and outer wheel tight against the inneR nuts²
If the inner wheel is loose, it moves around on the studs as µhe wheel turns.
This wallows out the holes ¶n the wheel and builds up heat² The wheel web
cRacks .· shatters .
.¸ and the wheel R¹m
teaRs up the bRake drum and Brakes²
Wheº you install µhe inner wheels,
torque the inner lug nuts to 300-350
lb»ft.
You'
II
need a deep ¼well socket,
½
N³N 5120¾00-261¿282À, to toRque the
inneR nuts·
After the inner ±ug nuts are tight, put
on the spaceR, outer wheel and outeR
lug nuts² Tighten them to450-500 lBÁft²
-±±²³
When the Going GeTs Rough .
A Â7 Cat Ãith a Äozer anÅ ÆOPÇ loads youÈ MÉ72ÊÉ µo µhe max² HaUlinG
over rough Èoads or crossËcountry can benD or cÈacK the Fame²
Ìour µrai±er needs µo be beeÍÄ up ².
. rEÎnfoÈceD ²²² µo carrÏ µhe Â7²
Ðt ÑeeÄs:
ÒÓussetS welDed to tÔe gooseneck and maÎn Fame ra¶±sÕ
ÒP±ates we±dED to the FaÖe unÄer µÔe goosenEcK²
ÒP±ates ÃElDeD µo the µop anD boµtoÖ of µÔe ×a¶Ñ FaÖE rails at µhe rear ax±esØ
If yoUr MÙ72ÊÉ is ÚissÎng aÑy of thEÖ, GEµ your sUÛpoÈt to aÄd µÔeÖ Ü
SlOW
= GO
ÝEep µÔe speed doÃn ÃheÑ yoU havE a Þ±l ±oaÄß
OÑ the ÔighÃay, that ÖeaÑs a toÛ speed ofàá MPH² Crossâãouѵry, µÔe Öax
FEB 85
47
L
speEÄ
Äråps µo 1á MPH²
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