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ROTOR CASE DISASSEMBLY - PUMP TYPE B1 - B2 - B3 - B4 - B550
1. Remove the front nuts and exert laverage in the
provided slots on cover.
2. Unscrew anticlockwise the rotor nuts, interposing a
non metal element between the rotors, making them
stop rolling.
3. Take care of the reference marked on rotors and
shafts (1-2) so that you will set them rightly while re-
assembling.
4. Extract the rotors, taking care you don't damage them
by means of metal tools.
5. Unscrew the back nuts and extract the rotor case. 6. Extract the stationary part of the mechanical seal from
rotor case.
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