4-10.4
Replace the hub and drum as follows
a.
For outboard mount hub and drum remove
the brake drum
(See Figure 4-14)
. It may be
necessary to release the slack adjuster. For
inboard mount,
(See Figure 4-15)
remove
drum after hub.
b.
Remove hub cap and catch lubricant in a
pan.
c.
Remove outer spindle nut, spindle locking
washer, inner spindle nut, and bearing. Re-
move hub from axle.
d.
Using an appropriate driver, remove inner
bearing cone, and seal.
e.
Using an appropriate driver, remove bearing
cups from hub.
f.
Check that the hub cavity is clean. If the hub
is to be reused, clean it thoroughly.
g.
Insert bearing cups into the hub.
h.
Install the drum to the hub or wheel unless
the drum is outboard mount.
i.
Clean the mounting surfaces with a good
grade commercial cleaner and soft rag. Dry
all component parts with a clean, absorbent
cloth or paper. Lubricant will not adhere to
surfaces wet with solvent.
j.
For hub and drum, make sure the drum
seats flat against the hub flange and mates
properly with the hub pilot. There should be
no interference between the brake drum pilot
chamfer and the corner radius on the hub.
k.
Install inner bearing, cone, and seal.
IMPORTANT
DO NOT MIX NEW CUPS WITH OLD CONES OR
NEW CONES WITH OLD CUPS.
l.
If studs are marked “R” or “L”, right hand (R)
hubs should be installed on the curbside of
the vehicle, left hand (L) hubs should be in-
stalled on the driver side.
DANGER
FAILURE TO USE THE CORRECT
STUD ON THE CORRECT SIDE MAY
CAUSE LOOSENING OF THE HUB
STUDS DURING OPERATION, RE-
SULTING IN LOSS OF A WHEEL.
m.
Place the hub or wheel over the axle spin-
dle being careful to align the hub bore with
the axle. Do not damage the seal. Support
the hub assembly until the outer bearing cone
and spindle nut are installed, to avoid damag-
ing the seal.
n.
Install the outer bearing cone and inner
spindle nut, tightening the nut until it is snug
against the outer bearing cone. Remove the
hub support allowing the hub to rest on the
bearings.
o.
Install and adjust bearings
(See Wheel
Bearing Lubrication and Adjustment).
p.
Install the hub cap with the proper gasket.
Tighten the cap screws of the hub cap to 15
to 20 ft-lbs. of torque.
q.
Remove the filler plug and fill the hub cavity
to the recommended level with a gear type
oil.
r.
For Outboard Mounted Brake Drum
(See
Figure 4-14)
place the drum over the hub and
brake shoes being careful not to damage the
threads on the studs. Make sure the drum
seats flat against the hub flange and mates
properly with the hub pilot. There should be
no interference between the brake drum pilot
chamfer and the corner radius on the hub. If
interference exists, the hub will not be able to
function properly.
4-21
Summary of Contents for 336C
Page 3: ...MODEL 336C CAR CARRIER OPERATOR S MANUAL PURCHASED FROM DATE ADDRESS PHONE NO SERIAL NO...
Page 8: ......
Page 24: ...3 12 Figure 3 7 Lining Up the Over the Cab Deck Figure 3 8 Loading the Over the Cab Deck...
Page 28: ...3 16 Figure 3 11 Loading the Lower Deck...
Page 32: ...3 20 Figure 3 13 Rear Impact Guard and Antilock Brake System...
Page 40: ...4 6 Figure 4 3 336C Wiring Diagram...
Page 45: ...4 11 Figure 4 7 Checking Axle for Bend Figure 4 8 Examples of Camber...
Page 50: ...4 16 Figure 4 12 Axle and Brake Assembly...
Page 54: ...4 20 Figure 4 14 Outboard Mount Hub and Drum Figure 4 15 Inboard Mount Hub and Drum...
Page 59: ...4 25 Figure 4 19 Mounting Tires and Wheels Figure 4 20 Stud Tightening Sequence...
Page 70: ...NOTES 5 10...
