12 Servicing
12.5 Replacing the radial shaft seal (inner bearing)
12.5 Replacing the radial shaft seal (inner bearing)
12.5.1
Removing the radial shaft seal
Personnel qualification:
o
Fitter
Personal protective equipment:
o
Work clothing
o
Protective gloves
o
Safety boots
Aids:
o
Tool set, radial shaft seal
Ä
Requirement:
ü
Pump unit disconnected from the electrical power supply, deenergized and secured against being
switched back on
ü
Coupling removed
3
5
4
1
7
5
11
3
7
4
10
8
2
B
1
B
9
6
6
1.
Remove the feather key
5
of the main screw
1
.
2.
Size 15 – 660, 880
(figure left):
Remove the socket screws
4
of the seal housing
3
and take off the seal housing.
-or-
Size 851, 951 – 3550
(figure right):
Remove the socket screws
4
of the seal flange
10
and take off the seal flange. Pull the O-ring
9
off the seal flange
10
. Remove the socket screws
11
of the seal housing
3
and take off the seal
housing.
7
17
14
15
16
16
15
3
4
14
13
7
11
14
15
16
15
3
14
16
7
8
2
3.
Size 15 – 660, 880
: Remove the circlip
13
.
4.
Press the radial shaft seal from the seal housing
3
with the mounting arbour radial shaft seal
ring
E
. (The sequence of the components can deviate from the figure.)
5.
Size 15 – 660, 880
: Remove the flat gasket
7
and carefully clean the fitting surface of the seal
housing.
-or-
Size 851, 951 – 3550
: Remove the flat gaskets
7
(2x) and carefully clean the fitting surface of the
seal housing.
36
OIC 18en-GB Edition 2020-01
Operating instructions
