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6.2
Changing blast wheel blades, impellers and cages
Make sure the power unit is stopped, disengage the hydraulics and switch off the PTO.
Remove the feed spouts. (1)
Remove the cage plates (2) by loosening the 6 nuts.
Unscrew the impeller bolt and remove the impeller. (3)
Clean the blast wheel and the blades with air.
Through the opening of the blast housing: use the special tool (4) to tap out all six blades from the
blast wheel towards the center of the blast wheel. Make sure the cup (5) of the special tool completely
covers the blade. Placing the tool too high could cause the blade to break, which makes it very difficult
to get the blade out.
Clean the blast wheel thoroughly to make sure that the new blades and impeller will fit well and to
avoid any imbalance of the blast wheel.
Use a
new central fixing bolt
when mounting a new blast wheel
Replace the blades with
six new ones
and re-assemble the machine in reverse order.
Note: blast wheel blades must be replaced as a set. Replacing only some of the blades can cause
imbalance of the blast wheel.
After each blast wheel repair work switch on the blast wheel motor for a short period (without feeding abrasive) in
order to find out whether the rotating parts turn freely and without vibration. After that, the blast cleaning
procedure can be continued.
The blast wheel motor is designed for a long service life. Damages to the blast wheel motor can be detected by
unusual noises or functional failure of the hydraulic motor. In this case notify our service department.
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