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USER MANUAL Tractor semitrailers PTL
45
Table 42. Non-slip screw torque check on leaf springs; Leaf spring end runners
7.1.4.
Adjustment of wheel hub bearings
The semi-trailer is delivered with adjusted hub bearings. After the first 100 km and thereafter after each
following 1500-2000 km, it is necessary to check and, if necessary, adjust the wheel hub bearings. Adjustment
shall be performed in accordance with the following procedure:
attach the semi-trailer to the tractor and pull up the hand-brake of the tractor;
place protection wedges under the wheel opposite to the one being adjusted;
insert a jack under the axle, at the marked place, and lift the wheel;
remove the hub cover;