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6. If the motor is to be replaced, the outer magnet must be removed from the motor
shaft. Loosen the (2) outer magnet set screws (Item 76) and pull the outer magnet
from the motor shaft. Place the outer magnet in a plastic bag to protect it from
attracting metallic particles that would cling to the magnet segments while the pump
is dismantled. The plastic bag must be removed prior to re-assembly of the pump.
7. Working from the pump side of the frame adapter,
remove the (4) hex head capscrews (Item 67) in
preparation for removing the PB Assembly. Grasp the
flange of the rear casing (Item 4) and pull it free from
the pump frame adapter.
8. With the PB Assembly resting on the flange flat edge and
the back of the rear casing can locate and remove the
impeller set screw (Item 11).
impact drill tool, remove the impeller nut (Item 6) from
the pump shaft (Item 16). DO NOT use the impact tool
during re-assembly to avoid breaking the Silicon Carbide
(SiC) components.
9. Lift the impeller (Item 2) off of the shaft and remove the impeller key (Item 15)
from the shaft.
thrust ring (Item 44) from the shaft. Grasp the end of
the shaft and pull it out of the rear casing, being
careful to prevent the SiC rear bushing (Item 42) from
falling, if it comes out with the shaft.
13.Working with the shaft, remove the sleeve bolt set
screw (Item 12).
using a hand wrench while holding the inner magnet
and the wrench end on the sleeve bolt with both
hands. (DO NOT place the inner magnet in a vise to
prevent damage to the magnet cladding.) Strike the
free end of the wrench on the table top to loosen the
right-hand threaded sleeve bolt. Once loosened, remove the sleeve bolt by hand,
and remove the SiC rear shaft sleeve and thrust ring.
14.Remove the shaft from the inner magnet (Item 40).
MPL/MHL IOM-R2 Copyright 2020 Magnatex Pumps, Inc.
Using a small cordless
10.
(Item 8) that retain the casing cover (Item 3) to the rear
casing. With care to prevent the SiC front bushing (Item
42) from falling out as the casing cover is removed, lift
the casing cover off the shaft.
11.
casing cover retaining bore. Inspect the set screw (Item
13) for damage or looseness and replace if damaged and
tighten if loose.
12.
Unscrew the sleeve bolt (Item 7)
11
Remove the (4) hex socket head bolts
Remove the SiC front bushing from the
Remove the SiC shaft sleeve (Item 43) and
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