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Picture 9. Changing the brush rings
7.4.
Adjusting the chains
The back broom has a chain at right side, which transfers
the power between the propeller shaft and the broom roller’s
axle. Check chains for tightness after every 50 operating hours. If chains are too loose, they will be needlessly strained.
If chains are too tight, they will strain cogwheels and axle
’
s bearings.
Chains are behind their protective cases. Adjusting the chains:
1.
Remove the protective case.
2.
Loosen 4 bolts in a bearing plate (picture 10).
3.
Adjust the chain by tightening / loosening the bolts (picture 11).
4.
Suitable tightness for the chain: press the chain in the middle with a force of a approx. 20 kg. Chain should yield
about 10-15 mm (picture 11).
5.
Tighten the locking bolts and reattach the protective case.
Picture 10. Bolts of the bearing plate
Picture 11. Adjustment bolts
