PRONAR RC2100-2, Руководство оператора

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Pronar RC2100-2 SECTION 5
5.6
The lifting jack must be suited to the weight of trailer and must be
technically reliable.
The lifting jack must be positioned on a level and hard surface so as to
prevent sinking into the ground or relocating the jack during lifting.
If necessary, use proper backing plates in order to reduce unit
pressure of the jack's base on the ground and prevent its sinking into
the ground.
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.
Moving the wheel try to detect slackness.
You may use a lever placed under the wheel supporting the other end
of the lever on the floor.
Repeat the procedure for each wheel individually, remembering that the jack
must be on the side opposite to the chocks.
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.
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 from the bearing and not from the
suspension system (e.g. slackness of leaf spring pins etc.).