12 Servicing
12.4 Replacing the mechanical seal (inner bearing)
16
16
17
1
1
5.
Mechanical seal standard/with throttle ring/with quench:
(figure left):
Remove the rotary seal ring
16
from the main screw
1
.
-or-
Mechanical seal hard material
(figure right):
Loosen the fixing screws
17
of the mechanical seal (quantity depends on size). Remove the
rotary seal ring
16
from the main screw
1
.
12.4.2
Installing the mechanical seal
Personnel qualification:
o
Fitter
Personal protective equipment:
o
Work clothing
o
Protective gloves
o
Safety boots
Aids:
o
Tool set mechanical seal or radial shaft seal
o
Silicone grease
18
1
19
B
1.
Ensure that all parts of the mechanical seal are dismantled so that the supporting ring
18
with
circlip
19
is visible on the shaft of the main screw
1
.
2.
Clean the main screw around the mechanical seal carefully and grease it, and push the mounting
sleeve main screw
B
onto the main screw.
16
B
12
B
17
1
1
18
19
18
19
20
20
3.
Mechanical seal standard/with throttle ring/with quench
(figure left):
Press the supporting ring
20
and rotary seal ring
16
onto the main screw until it stops.
-or-
Mechanical seal hard material
(figure right):
Loosen the fixing screws
17
of the mechanical seal (quantity depends on the size). Slide the sup-
porting ring
20
and rotary seal ring onto the main screw until it stops and retighten the fixing
screws.
4.
Attention:
When pressing the components into the seal housing/seal flange ensure that the ad-
apter sleeve
21
/threaded pin
22
is not damaged. Take the recess into account.
12
12
10
3
A
21
22
A
Mechanical seal standard/hard material
Size 15 – 660, 880
(figure left)/
Size 851, 951 – 3550
(figure right):
Use the mounting arbour stationary seal ring
A
to press the stationary seal ring
12
with mounted
O-ring into the seal housing
3
/seal flange
10
.
-or-
34
OIC 18en-GB Edition 2020-01
Operating instructions
