PRONAR PT510, Operator'S Manual

Page: 97 / 133

SECTION 5 Pronar PT510
5.5
Checking wheel axle bearings for slackness
Turning the wheel slowly in both directions check that movement is smooth
and that the wheel rotates without excessive resistance.
Turn the wheel so that it rotates very quickly, check that the bearing does not
make any unusual sounds.
Holding the wheel above and below, try to feel any slackness.
You may use a lever placed under the wheel supporting the other end
of the lever on the floor.
Repeat the inspection procedure on the other wheels.
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
TIP
If hub cover is damaged or missing, contamination and dampness enter the hub, which
causes significantly 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.
Check wheel axle bearings for slackness:
•
after travelling the first 1,000 km,
•
after intensive use of trailer,
•
every six months use or every 25,000 km.
DANGER
Before commencing work, the user must read the instructions for lifting jack and adhere
to the manufacturer's instructions.
The lifting jack must be stably supported on the ground and so must the axle.
Ensure that trailer shall not move during inspection of axle bearing slackness.