泽尼特集团 | 28 3月 2022

ZMR - Mixer Disassembly

Step by step operations

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

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