Maintenance and storage
Disc mower
GMD883
75
Fixing elements
Check the fixing elements:
- After hitting an obstacle.
- When replacing knives.
- At the beginning of each season.
The fixing bolts should be changed in the following
cases:
- When there is visible warping.
- When the locking compound is worn or inoperational.
- When the bolt head wear reaches the knife contact
area.
- When diameter D of the bolt shoulder is less than
15 mm (0.6’’).
- After having been removed 5 times.
Replace nuts in the following cases:
- When the contact washer has lost its elasticity.
- When the contact washer loosens itself from the nut.
- When nut wear reaches = 5 mm (0.2’’).
- After having been removed 5 times.
Check the condition of the fixing elements
regularly and also the torque of the knife-fixing
bolt. Torque nut to 12 daN m (89 lbf ft).
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