Checking Wheel Axle Bearings For Slackness - PRONAR RC3100 Operator's Manual

Technical inspection schedule

5.12 CHECKING WHEEL AXLE BEARINGS FOR SLACKNESS

• Raise the wheel using a lifting jack.
• Turn the wheel slowly in both direc-
tions. Check that movement is smooth
and that the wheel rotates without ex-
cessive resistance and jamming.
• Turn the wheel so that it rotates very
quickly, check that the bearing does
not make any unusual sounds.
• Moving the wheel try to detect
slackness.
• Repeat the procedure for each wheel
individually, remembering that the
jack must be on the side opposite to
the chocks.
• If slackness is felt, adjust bearings.
Unusual sounds coming from bearing
may be symptoms of excessive wear,
dirt or damage. In such an event the
bearing, together with sealing ring,
should be replaced with new parts,
or cleaned and greased again During
inspection of bearings, ensure that
possibly detected slackness comes
Figure 5.10 Checking slackness
TIP
If hub cover is damaged or missing, contamination
and dampness enter the hub, which causes signifi-
cantly faster wear of bearings and hub seals.
Life of bearings is dependent on working conditions
of the trailer, loading, speed of travel and lubrication
conditions.
from the bearing and not from the
suspension system (e.g. slackness
of leaf spring pins etc.).
• Check technical condition of hub cover,
if necessary replace it with a new one.
PRONAR RC3100
Section 5
526-I.10-1
I.3.1.526.12.1.EN
5.15