12 Servicing
12.7 Replacing the radial shaft seal
12.7.3
Removing the radial shaft seal (DL3/DL4/DS3/DS4)
Personnel qualification:
o
Fitter
Personal protective equipment:
o
Work clothing
o
Protective gloves
o
Safety boots
Aids:
o
Extractor
Requirement:
ü
Cartridge pump removed
1
2
3
4
5
9
6
7
8
10
1.
Remove the feather key
1
from the main screw
9
.
2.
Remove the circlip
2
and mounting ring
3
from the pump housing
10
and remove the O-ring
4
.
3.
Remove the circlip
8
from the mounting ring.
4.
Press the radial shaft seal ring
5
, supporting ring
6
and radial shaft seal ring
7
from the mounting
ring.
12.7.4
Installing the radial shaft seal (DL3/DL4/DS3/DS4)
Personnel qualification:
o
Fitter
Personal protective equipment:
o
Work clothing
o
Protective gloves
o
Safety boots
Aids:
o
Molybdenum disulphide paste (for example Fenkart T4)
Notice
The thread sealant serves during installation of the radial shaft seal as a lubricant, and after it has
cured as an anti-rotation measure.
1
2
3
4
5
10
9
6
8
7
1.
Clean the contact surface of the radial shaft seal ring
5
and
7
in the mounting ring
3
carefully.
2.
Carefully press the radial shaft seal ring
5
into the mounting ring. Take the mounting direction into
account. In the case of excessive resistance apply additional thread sealant.
3.
Fill the radial shaft seal ring with molybdenum disulphide paste (MoS
2
).
4.
Mount the supporting ring
6
.
5.
Repeat Steps 3 and 4 for the radial shaft seal ring
7
.
6.
Mount the circlip
8
.
7.
Lightly grease the O-ring
4
and insert the cartridge pump.
8.
Mounting the mounting ring in the cartridge housing
10
9.
Mount the circlip
2
in the cartridge housing.
10. Mount the feather key
1
on the main screw
9
.
Operating instructions
OID 06en-GB Edition 2019-11
37