Krone BiG X 770-3 - Replacing the Grinding Stone

Maintenance – supply system
690
24.3.3 Replacing the grinding stone
If the grinding stone (1) is worn to such an extent that it can no longer be re-adjusted, the
grinding stone must be replaced.
If the grinding stone (1) is replaced, the clamping rings (3) must also be replaced.
WHBBX00160
5
1
4
3
2
3
6
Fig. 634
• Whenever a grinding stone is changed, replace the clamping rings (3).

NOTICE
Every time a new grinding stone (1) is installed, make sure the parts are correctly arranged.
The clamping rings (3), the intermediate ring (4), the sleeve (5) and the support disc (6) must be
mounted as shown above.
The bevelled edges of the intermediate ring (4) and the sleeve (5) must point downwards.
Fig. 635
• Unscrew the screw (3).
• Remove the pawl (2).
• Determine dimension “b” from the lower edge of the grinding stone to the lower edge of the
grinding slide.
• Allow the detent pin (4) to lock into place by turning it 90° degrees.
• Turn back the ratchet wheel (1) until the detent pin (4) engages.
• Turn ratchet wheel (1) further back until the detent pin (4) has completely engaged and the
grinding stone adjustment is locked in place.
• To loosen the grinding stone clamp, continue turning the ratchet wheel (1).
• Remove the ratchet wheel (1).
• Push the grinding stone down and out and remove it.