PRONAR PT512, Operator'S Manual

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CHAPTER 5 Pronar PT512
5.5
Inspection of axle bearings play
Turning the wheel slowly in both directions, check that movement is smooth
and that the wheel rotates without excessive resistance and blockages.
Turn the wheel so that it rotates very quickly and check if the bearing does not
make any unusual sounds.
Holding the wheel above and below, try to feel any play.
You may use a lever placed under the wheel and support the other
end on the floor.
Repeat the inspection procedure on the other wheels.
If a play is detected, adjust bearings. Unusual sounds coming from bearing may be
symptoms of excess wear, dirt or damage. In this case the bearing, together with sealing
ring, should be replaced with new parts or cleaned and greased again.
TIP
Damaged hub cover or lack of hub cover causes penetration of contamination and
moisture to the hub, which causes significantly faster wear of bearing and hub seals.
Bearing life is dependent on working conditions of trailer, loading, tractor speed and
lubrication conditions.
Check axle bearings play:
•
after first 1000 km,
•
before intensive use of the trailer,
•
every six months of usage or every 25,000 km.
DANGER
Prior commencing work, the user should carefully read the lifting jack's Operator's
Manual and observe all manufacturer's recommendations.
The lifting jack must be stably supported on the ground and the axle.
Ensure that the trailer shall not move during inspection of axle bearings play.