Zenit Group | 28 Mar 2022
- Place the mixer on the bench and secure the propeller to the hoist with a suitable tie
- Remove the propeller
- Extract the split pins and remove the sliding cylinders
- Remove the runner and the plastic guard
- Remove the bracket
- Sling the motor in a horizontal position with suitable slings and eye-bolts
- Dismantle the supporting bracket and remove the plastic guards
- Remove the collars and the lifting handle
- Undo the reduction gearbox case plug and collect the oil in a suitable container
- Undo the front cover plug and collect the oil in a suitable container
- Stand the motor on the bench
- Remove the cable gland
- Remove the rear cover
- Cut the cables of the stator, the thermal protections and the sensor
- Remove the ground connection screw
- Remove the cable stop and extract the cable from the cover
- Extract the O-ring from the seat
- Using two suitable screws, extract the rear bearing support
- Extract the O-ring from the seat
- Overturn the motor
- Remove the front cover
- Remove the counterface
- Fix an eye-bolt to the shaft
- Remove the sensor cable gland
- Using a hoist, lift the shaft and the front bearing support
- Remove the O-rings from the seats
- Remove the first mechanical seal and the washer
- Remove the snap ring and the second mechanical seal
- Remove the snap ring
- Separate the shaft from the bearing support by tapping gently with a rubber hammer
- Remove the snap ring from the front bearing support
- Remove the bushing and extract the second counterface and the O-ring
- Remove the snap ring then use an extractor to separate the bearings from the shaft
- Extract the planetary gear set
- Undo the reduction gearbox case screws and extract the crown gear
- Separate the reduction gearbox case from the motor
- Extract the rotation stop pins
- Remove the sun gear and the paper gasket
- Extract the O-ring from the seat
- Unscrew the sensor cable gland
- Remove the snap ring and extract the mechanical seal
- Remove the snap ring
- Remove the bushing and extract the counterface and the O-ring
- Remove the key
- Remove the snap ring
- Fit the press with a driver suitable for extraction of the rotor
- Place paper or rags underneath to cushion its fall
- Extract the rotor with the aid of a press
- Use a driver to avoid damaging the top of the shaft
- Remove the bearing using an extractor
- Carefully arrange the cables inside the motor case
- Fit the stator extractor plate (use the appropriate model for the motor)
- Remove the sensor, bearing and washer from their seats
- Extract the stator using a suitable press and driver
- Place paper or rags underneath to cushion its fall