PRONAR T780, Translation Of The Original Instructions, Page: 61 / 83

5.2
5.1 INSPECTION AND REGULATION OF WHEEL AXLE
BEARINGS
In newly purchased trailer, after covering a distance of 100 km, while during further use –
after 6 months of vehicle use check and regulate wheel axle bearings when needed. Worn or
damaged bearing should be replaced. Inspection of these elements should be conducted
according to instructions below.
•
Hitch empty (without load) trailer to tractor, place blocking wedges under trailer wheels
and raise wheels in succession using the appropriate lifting jack. The lifting jack should
be placed under the axle between U crews fixing absorber springs to the axle (figure
(5.2A)). Make certain that the trailer will not move during inspection of the bearing.
•
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.
•
Grasp wheel above and below and try to feel any slack play, this may equally be
checked with the aid of a jack placed under the wheel supported on the floor/ground.
DRAWING 5.1A REGULATION OF ROAD WHEEL AXLE BEARINGS
(1) hub cover, (2) castellated nut, (3) securing split cotter pin