Mondolfo Ferro MT 2450, Техническое и сервисное руководство

Страница: 19 / 36

Technical service manual 19
UK
REPLACING THE BRAKE SHOES
- Open the weight-holder lid, first undoing the fixing screws.
- Remove the plastic guard of the central unit.
- Remove the search circuit board (B, fig. 4) from the supporting brake (C, fig. 4).
- Disconnect the motor power supply cable.
- Remove the wheel spin device and the motor unit.
- Disconnect the sensor rod return spring from the body of the machine, unscrew the
fixing screws and remove the sensor from its seat. To access the return spring, remove
the protective cap close to the adjuster foot on the back of the machine.
- Remove the pulley (D, fig. 4), unscrewing the two fixing dowels (E, fig. 4).
- Remove the brake shoes (A, fig. 4);
- Fit the new shoes.
- Apply medium thread glue to the locking dowels and replace the pulley.
- Turn the shaft by hand and check that the shoes do not touch the pulley when they
are in the rest position.
- Replace the search circuit board, the motor-support unit and the wheel spin device.
- Adjust the wheel spin device as described in “Adjusting the wheel spin device”.
- Replace the sensor, reversing the operations carried out to disconnect it.
- Calibrate the sensor as described in the operator’s manual.
- Perform a few wheel spins and check that the wheel spin device is operating cor-
rectly.
- Fit a truck wheel and check that the brake is working correctly.
- Close the weight-holder lid again.
B
C
E
D
A
Fig.4