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7.4. Replacing the brush rings
Clean the device inside the casing carefully..
1) Open protective cases from both sides.
2) Detach the hydraulic hoses located inside the protective case (mark the hoses to make it easier to reattach them).
Protect the exposed hydraulic connectors with plugs.
3) Loosen the adjustment bolts in the bearing unit. Detach the cotter pin from the bottom of the adjustment pole and
remove the adjustment pole. The bearing unit does not need to be removed from the support plate. (Picture 6)
4) Support the left side of the broom roller before detaching the right side. Detach the three M12 bolts from the bearing
unit’s support plate and remove the lift arm. (Picture 7)
5) Remove M8 bolts from the engine’s support plate on the right side (picture 8). After this the broom roller is detached
from the frame.
6) Remove the brush rings. Pay attention to the order in which they were installed, since every other ring needs to be
turned 180 degrees.
7) The first six brush rings, located next to the engine case, cannot be turned, so the six brush rings near the engine
are all installed without turning them.
8) When brush rings are changed, reassemble the roller broom in reverse order. Remember to keep the hydraulic
connectors clean. In order to prevent jamming, it is advised to add e.g. copper paste between the bearing and the
roller axle.
Picture 6. Bearing unit and cotter pin
Picture 7. Detaching the bearing unit’s support plate
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