PRONAR VMP-10, Руководство пользователя, Страница: 54 / 78

5.2
5.1 INSPECTING AND ADJUSTING WHEEL BEARINGS
In newly purchased feed car, after one month of operation and in case of further performance
– after 6 months of operation, one ought to verify and, if need be, adjust wheels bearing
slackness. Worn or damaged bearings need to be replaced. When replacing bearings it is
necessary to replace sealing rings that are located in hub of carriageable axle.
Accouple the feed car with tractor, put wedges under wheels and lift one wheel at a time by
means of purpose-made jack. The feed car must not be loaded. When checking bearings you
must not have telescopic-joint shaft connected. Jack ought to be placed under carriageable
axle between bow screws that fasten axle to frame. It is necessary to be sure that the feed
car will not roll by when checking bearings. By turning the wheel in both directions verify
whether movement is smooth and there is no excessive opposal. Set the wheel into very fast
motion and check whether there are no abnormal sounds coming out of bearing. Hold this
wheel with both hands and try to feel slackness, this may also be verified by putting lever
under wheel and resting it in on the ground. In case you can actually feel slackness, perform
adjusting procedure. Abnormal sounds coming out from the bearing may be the symptom of
its excessive wear, contamination or damage. In such case, one ought to replace bearing
along with sealing wheels.
FIGURE 5.1A BEARING ADJUSTMENT PROCEDURE
(1) hub cover, (2) castellated nut, (3) cotter pin
Bearings adjustment procedure ought to be performed according to following guidelines:
•
dismantle hub cover (1),
•
take cotter pin out (3) which secures castellated nut (2),
3
2
1
min 1/3