4-24
4-10 WHEEL BEAR ING LU BRI CA TION AND AD JUST MENT
With semi trailer sit ting level, the oil level must
be checked daily and main
tained be
tween the
“ADD” and “FULL” lines on the hub cap win
dow.
Check for cracked win
dows, miss
ing filler plugs,
and oil leaks. Add hub oil through the “POP-
IN”
filler plug lo cated in the cen ter of the hub win dows.
Re- install the “POP- IN” plugs af ter fill ing each hub.
Ad just wheel bear ings and change oil every 50,000
miles or with each brake lin ing re place ment, which
ever oc curs first.
4-10.1
Ad just ment
a.
With a drain pan un der the hub cap, re move
the hub cap as sem bly al low ing oil to drain.
b.
Lift the wheel off of the ground.
c.
Ad just slack ad juster to elimi nate brake drag
dur ing tire/wheel ro ta tion.
d.
Re
move outer lock nut and in
ner nut and
lock washer.
e.
Tighten the in ner ad just ment nut to a mini -
mum of 75 ft.-lbs., while ro tat ing wheel to in -
sure proper seat ing of the bear ings and cups
in the wheel hub.
f.
Loosen the in ner ad just ment nut so that the
wheel will turn freely.
g.
Re
tighten the in
ner ad
just
ment nut to 50
ft.-lbs. while ro
tat
ing the wheel, to prop
erly
po si tion the bear ings for the fi nal ad just ment.
h.
Loosen the in ner ad just ment nut 1/3 turn.
i.
In
stall the spin
dle nut lock washer so that
the dowel on the in
ner nut will align with a
hole in the lock washer and the washer tang
fits in the spin dle key way.
j.
In stall the outer lock nut and tighten to 250-
300 ft.-lbs. End- play of .001" to .010" must be
pres ent in the ad justed wheel bear ing as sem -
bly.
DAN GER
FAIL
URE TO TORQUE THE OUTER
LOCK NUT PROP ERLY COULD CAUSE
THE WHEEL TO COME OFF DUR
ING
VE HI CLE OP ERA TION RE SULT ING IN
PROP
ERTY DAM
AGE OR LOSS OF
LIFE.
k.
In stall the hub cap with a new gas ket and fill
with oil to the full mark.
See Ta ble 4-1.
l.
Ad just brakes ac cord ing to
Section 4-9.5 c.
m.
Check hub oil level af ter the wheel has set
level in one po si tion for a few min utes to al low
the oil to work into the bear ings.
Summary of Contents for 318C
Page 3: ...MODELS 318C BOEING TRAILER OPERATOR S MANUAL PURCHASED FROM DATE ADDRESS PHONE NO SERIAL NO i...
Page 8: ......
Page 12: ......
Page 32: ...3 20 FIGURE 3 6 STEPS FOR LOADING AND UNLOADING...
Page 36: ...3 24 FIGURE 3 8 REAR IMPACT GUARD AND ANTILOCK BRAKE SYSTEM...
Page 52: ...4 14 FIGURE 4 6 CHECKING AXLE ALIGNMENT FIGURE 4 7 EXAMPLES OF CAMBER...
Page 56: ...4 18 FIGURE 4 10 AXLE AND BRAKE ASSEMBLY...
Page 64: ...4 26 FIGURE 4 16 MOUNTING TIRES AND WHEELS FIGURE 4 17 STUD TIGHTENING SEQUENCE...
Page 76: ...5 10 NOTES...
