37 8. Replacement Interventions; 37 8.1 Pick-Up Replacement - Bosch WBE 4200 Instandsetzungsanleitung

en 50 | WBE 4200 | Replacement interventions
8. Replacement interventions
8.1 Pick-up replacement
1. Remove the weights protection;
Fig. 10: Weights protection removal
2. Disconnect the Control panel;
3. Loosen the fixing screw of the feeler (fig.15, pos.1);
4. Extract the entire Easyfit® calliper unit from the
machine;
5. Loose the drive belt and remove it;
6. Loosen the 4 allen screws that keep it in position
and extract the oscillating unit (fig.12);
Fig. 11: Removal of the oscillating unit
7. Loose the locking nut put under the pick-up;
8. Unscrew position nut (fig.13, pos.1);
9. If necessary, insert the new pick–up;
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Fig. 12:
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To keep the spheres in position, use a little of oil
grease;
10. Screw the nut until you cannot turn it manually;
11. M anually: lock the nut making a half turn with the
key;
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With a dynamometric key, apply a 4 n/m strength;
12. Keep the Allen key and fix the locking nut (fig.14);
Fig. 13:
13. Mount again the shaft inside the machine;
14. Reconnect the engine.
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In order to check that the reparation has been
successful, check the tensions again and go on
making a new calibration of the machine.
Robert Bosch GmbH