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Maintenance
8.2.5
Stem
The stem and quick release system should be
inspected at regular intervals. The specialist dealer
should adjust them if necessary.
If the hexagon socket head screw is also loosened,
the headset backlash also needs to be adjusted.
Medium-strength thread locker, such as Loctite
blue, then needs to be applied to the loosened
screws and the screws tightened as per the
instructions.
Check for wear and signs of corrosion (maintain
with an oily cloth) and for oil leaks.
8.2.6
Checking the chain and belt tension
Check the chain or belt tension in three or four
positions, turning the crank a full revolution.
The ideal chain or belt tension has been achieved
if the
chain
or the belt can be pushed a maximum of
2 cm in the middle between the pinion and the
toothed wheel. The crank must also turn without
resistance.
Excessive chain or belt tension increases wear.
If the chain or belt tension is too low, there is a risk that
the
chain
or belt will slip off the
chain wheels
.
Check the chain and belt tension once a month.
NOTICE
If the
chain
or the belt can be pushed more than
2 cm, you need to have the
chain
or belt tensioned
again by the specialist dealer.
If the
chain
or the belt can only be pushed less than
1 cm, the
chain
or belt will need to be relieved of
tension accordingly.
EN_034-11572_1.0_09.18_HERCULES BOSCH_Inhalt.book Page 153 Wednesday, August 29, 2018 6:21 PM