Bosch ZEMO SU-E FS 12 Translation Of Original Operating Instructions page 192

CAUTION
!
Hazard for the environment due to toxic
substances
The rear frame damper contains toxic and
environmentally harmful oils and lubricants. Such
fluids will contaminate if they enter the sewers or
groundwater.
 Dispose of lubricants and oils left over after
repairs in an environmentally responsible way
in accordance with statutory regulations.
1 Dismantle the rear frame damper.
2 Clean and inspect its interior and exterior.
3 Recondition air springs.
4 Replace airtight seals on air springs.
5 Change oil.
 Replace dust wipers.
8.5.4 Inspect gear hub
8.5.4.1 Adjusting the hub with cone bearing
In the case of hubs with a cone bearing, the
bearing shell fixed in the hub cone body rotates
with its larger ball bearing surfaces around the
inner bearing cone resting against the fork end.
The outer bearing shell rotating around the
stationary bearing cone is subject to considerably
more evenly distributed loads thanks to its larger
ball running surface.
1 Attach a small, red colour marking on the lock
nut.
2 Turn the wheel axle 40° to 90° every 1,000 to
2,000 km.
 The bearing cone is subject to evenly
distributed loads.
MY22Z01 - 12_1.0_25.07.2022
Inspection and maintenance
8.5.5 Inspecting the stem
Incorrectly fastened screws may come loose due
to impact. The stem may no longer be firmly fixed
in its position as a result. This will cause a crash
with injuries.
 Check the handlebars and the stem's quick
release are firmly in position.
8.5.6 Inspect and grease steering headset
1 Remove fork.
2 Clean steering headset. If it is very dirty, flush
the bearing with cleaning agents such as WD-
40 or Karamba.
3 Check steering headset for damage.
 If the steering headset is damaged, replace
steering headset as specified in the parts list.
4 Grease steering headset and bearing seat with
highly viscous, water-repellent grease (e.g.
Dura Ace special grease by SHIMANO).
5 Re-fit fork with steering headset as per fork
instructions.
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