Overhauling The Front Wheel; Wheel Bearings - Ducati MONSTER 821 Workshop Manual

Overhauling the front wheel

Wheel bearings

Before checking the dimensions, check for wear on wheel hub bearings. Check for wear by hand after
cleaning and degreasing the bearings in their seats.
Turn the internal ring and check that the internal balls move freely: any irregularity indicates deformations
like those indicated in values "X" and "Y".
An excessive wear can cause vibrations and instability of the vehicle and therefore it is necessary to replace
the bearing.
To remove the bearings (10) and the dust seals (9) from the wheel hub follow the instructions below.
Position a drift (A) against the inner ring of the bearing (10).
Tap with a hammer until removing the bearing (10).
Apply the drift at different points to facilitate the removal.
Important
Once removed, the used bearings and sealing rings must not be refitted.
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