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10.2
Indications to the spare part order
Spare parts are available from the supplier.
Standard commercially available parts are to be
purchased in accordance with the model type.
The ordering of spare parts should contain the
following details:
1. Pumptype
e.g. SBA141
2. Pump No.
e.g. 11198140
The date of the construction year is a compo-
nent of the pumps type number.
3. Voltage, Frequency and Power
Take item 1, 2 and 3 from the nameplate
4. Spare part with item No.
e.g. connection cover item No. 52
11 Repair Instructions / Replacing the
rotary mechanical seal / the shaft clamp
11.1 Replacing the rotary mechanical seal
Wear safety gloves!
Risk of injury due to sharp edges on pump compo-
nents, i.e. impeller blades.
1) Disconnect the pump electrically and mechani-
cally. Note the markings on the pump compo-
nents prior to dismantling. When completely
dismantling a unit with dual axial face seals,
drain the medium in the blocking chamber
through the screw plug (27).
2) Remove the hexagonal head screws (72).
3) Loosen and remove the connection cover (52)
from the pump plate (53). Remove O-ring (67).
4) Remove the suction screw (57).
5) Use two screwdrivers to push the impeller (55)
from the insert shaft (91). Insert the screwdrivers
between the impeller (55) and the pump plate
(53).
6) Remove the woodruff key (64) and the running
sleeve (61) from the insert shaft (91) and re-
move the pump plate (53) and O-ring (67).
7) Remove the spacer sleeve (59). Use two screw-
drivers to push the impeller (55) from the quick
shaft (91). Insert the screwdrivers between the
impeller (55) and the pump plate (54).
8) Remove the Woodruff key (64) from the insert
shaft (91). Remove the pump plate (54) and the
O-ring (67).
9) Remove the spacer sleeve (60) and use two
screwdrivers to push the impeller (55) from the
quick shaft (91). Insert the screwdrivers between
the impeller (55) and the intermediate cover
(69). Remove the woodruff key (64), the inter-
mediate cover (69) and O-ring (67).Remove the
spacer ring (63)from the quick shaft (91). Re-
move the circlip (25), the shim ring (22) and the
rotating axial face seal unit (24b-24e).
BE8140
10)Loosen the Socket head cap screws (17) and
remove the pump body (50).
11)Remove circlip (25), shim ring (22) and remove
the rotating axial face seal unit (24b-24e). To
replace the insert shaft, see position 11.2).
When changing an axial face seal, remove the
stationary axial face seal unit (24a) from the
pump body (50) and pump foot (12). Clean the
seat of the seal and the pump parts!
The mechanical seal (24) should now be com-
pletely replaced. If necessary replace the
O-rings (67), (78) and impellers (55).
12)Fit a new mechanical seal.
The sliding surfaces of the axial face seal must
be free of dirt and grease. Lightly moisten the
collar (24a) with prill water and press the sta-
tionary axial face seal unit (24a) into the pump
body (50) and pump foot (12). Slide the rotating
axial face seal unit (24b-24e) onto quick shaft
(91) and fix in position using shim ring (22) and
circlip (25).
13)The remaining assembly steps are Pos 3) to 11)
in reverse order.
Edition 10/2021
Page 8 of 10
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