Checking the Rotor
Service Interval:
Before each use or daily—Check for any
unusual vibration of the rotor.
Every 50 hours—Check for excessive play in the rotor
bearings.
To check for any unusual vibration of the rotor, run each
cutting unit in turn at full rpm.
Note:
If any unusual vibration is detected, check for damage
or excessive wear of the rotor or blades. All blades need to
have a similar level of wear as their weight affects the balance
of the rotor.
Note:
If the vibration issue cannot be found, contact your
Authorized Service Dealer.
To check for excessive play in the rotor bearings:
1.
Raise and support the cutting unit; refer to
Machine Off the Ground (page 53)
.
2.
Grip the rotor at each end and check for excessive end
float.
Note:
If end float is detected, contact your Authorized
Service Dealer.
Note:
If the rotor needs to be replaced or balanced,
contact your Authorized Service Dealer.
Checking the Rear-Roller
Bearing Adjustment
Service Interval:
Every 50 hours
Important:
It is essential that the cutting units’ roller
bearings are kept in good adjustment in order to ensure
maximum working life. Excessive roller-end float causes
premature bearing damage.
1.
Grip the roller and move from side to side and up and
down.
2.
If excessive movement is detected, carefully tighten
the nuts at each end of the roller with the spanner just
sufficiently to remove any end float (
).
Note:
The roller should still rotate freely after
adjustment. Overtightening the nuts could lead to
premature bearing damage.
1
G014441
Figure 70
1.
Nut
52
