Landoll L20 Series, Руководство оператора

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4-8.4 Replace the hub and drum as follows
(See Figure 4-5):
a. Remove the brake drum (See Figure 4-5) . It
may be necessary to release the slack ad-
juster.
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.
CAUTION
REPLACE BRAKE DRUMS IN PAIRS TO
ACHIEVE THE SAME BRAKING
POWER ON BOTH WHEELS AND MAIN-
TAIN AN EVEN BRAKING LOAD ON
THE AXLE. FAILURE TO DO THIS MAY
SIGNIFICANTLY REDUCE THE PER-
FORMANCE, SERVICE LIFE, AND/OR
SAFETY OF YOUR VEHICLE.
h. 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.
i. Place the drum over the hub and brake
shoes being careful not to damage the
threads on the studs (See Figure 4-5) . 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 ra-
dius on the hub. If interference exists, the hub
will not be able to function properly.
j. Install inner bearing, cone, and seal.
IMPORTANT
DO NOT MIX NEW CUPS WITH OLD CONES OR
NEW CONES WITH OLD CUPS.
k. 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.
WARNING
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.
l. Place the hub or wheel over the axle spindle
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.
m. 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.
n. Install and adjust bearings (See Section
4-10, Wheel Bearing Lubrication and Ad-
justment).
o. Install the hub cap with the proper gasket.
Tighten the cap screws of the hub cap to 15
to 20 ft-lbs. of torque.
p. Remove the filler plug and fill the hub cavity
to the recommended level with a gear type
oil.
4-9 HUB AND DRUM MAINTENANCE (FOR TRAILER WITH ELECTRIC BRAKES)
Follow operation, maintenance, service manual
from hub and drum vendor that comes with each
trailer. If another manual is required, it can be ob-
tained by requesting Landoll P/N 3-475-010001.
4-10