Adjustment Of Axle Bearing Slackness - PRONAR T683 Operator's Manual

SECTION 5
Check wheel axle bearings for slackness
Check condition of hub cover, if necessary replace with new cover. Inspection of bearing
slackness may only be conducted, when the trailer is hitched to a tractor, and the load box is
empty.
DANGER
Before commencing work, the user must read the instructions for lifting and adhere to
the manufacturer's instructions.
The lifting jack must be stably supported by the ground and so must the axle.
Ensure that trailer shall not move during inspection of axle bearing slackness.
5.2.3

ADJUSTMENT OF AXLE BEARING SLACKNESS

The wheel should turn smoothly without jamming or detectable resistance. Adjustment of
bearing slackness may only be conducted when the trailer is not loaded and is hitched to the
tractor.
Ensure that the trailer is properly secured and will not move during wheel dismounting.
Adjustment of axle bearing slackness
Take off hub cover (1) - figure (5.2).
Take out split cotter pin (3) securing castellated nut (2).
Tighten castellated nut in order to eliminate play.
Unscrew nut (not less than 1/3 rotation) to cover the nearest thread groove
with alignment to opening in wheel stub axle. Wheel should rotate with
insignificant resistance.
• after travelling the first 1,000 km,
• after intensive use of trailer,
• every six months use or every 25,000 km.
Wheel should rotate with insignificant resistance.
Nut may not be excessively tightened. Do not apply excessive
pressure because working conditions of the bearings may deteriorate.
5.5
Pronar T683