Great Plains P18028E Operator Manual - Manual (Page 25)

25 DTX
Operating Instructions
5.3 Disc Hub Maintenance
Grease every disc hub until
grease shows from the seals
according to the lubricating
intervals outlined on page 28.
Check disc hubs regularly for
tightness.
5.0 Servicing and
Maintenance
Follow the safety instructions for
servicing and maintenance.
5.1 Servicing
Your machine has been designed and
constructed for maximum performance,
operational efficiency and operator
friendliness under a wide variety of
operating conditions.
Prior to delivery, your machine has
been checked at the factory and by your
authorised dealer to ensure that you
receive a machine in optimum condition.
To ensure trouble-free operation,
it is important that servicing and
maintenance work is performed at
the recommended intervals.
5.2 Cleaning
In order to ensure that the machine is
always in operating condition and to
achieve optimum performance, perform
the cleaning and servicing work at regular
intervals.
Avoid cleaning the roll / disc bearings with
a high- pressure hose or a direct water jet.
The housing, screwed connections and
ball bearings are not watertight.
Fig. 5.01: Checking Disc Bearing Adjustment
Е
Е
Е
Е
5. Servicing and Maintenance
Regularly examine hub caps,
seals, shear and pivot bolts and
all tracking bolts for tightness
and effectiveness twice weekly
or every 50 working hours
(whichever is more frequent).
5.3.1 Tightening Disc Hubs
1 Ensure that the bearing seal is in the
correct orientation when replacing /
assembling components.
2 Ensure that the stub axle is free from
dirt and the nut and outer bearing can
easily slide on it.
3 Tighten the crown nut with a hand
spanner (a torque wrench is not
required) while turning the hub
clockwise until the bearing drags
slightly (you feel the hub turning
heavily). Some resistance will be due
to friction from the seal.
4 Turn back the crown nut to the next
locking position. Even if the tightening
of the nut has reached an exact fixing
position, turn it back.
5 Insert the retaining pin.
6 Try to shake/rock the outer edge of the
hub/spindle: play of 0.1 / 0.2mm will
not reduce the bearings’ life and, in
addition, prevents overheating. If the
adjustment is correct the hub should
turn freely with the only friction being
from the seal.