EN – 50
ø 34.5 ± 0.1
5.5 ± 0.2
(*)ø 19.5
+0.2
0
1
à 45°
+0.2
0
Replacement of shaft seals
Recommended tools
• Specific extraction tool.
• Specific assembly mandrel.
• A support plate (or washer).
Extracting a shaft
seal from its housing
Specific tools
• A flat screwdriver.
• A hammer.
With the flange flat: the seal is extracted using
a screwdriver, resting on the plate (or washer) so
as not to damage the seal housing.
washer
Assembling
the shaft seal
The seal housing is lubricated with the lubricant
used in the pump.
The flange is resting on a flat surface.
According to the direction of assembly
, the seal
is fitted on the assembly mandrel.
Using a press or a hammer, the seal is inserted in its
housing.
Check the position of the seal: it must lean against
its bearing.
(*) 24.5 mm according to product configuration.
Mandrel
Double lip seal greasing (12)
Use only the grease delivered in the minor kit.
Put some spots of grease between the lips of the seal as
shown on the picture.
Spread meticulously the grease
to fill in the space between
the two lips: be aware to not
damage the lips! than remove
the excess of grease.
The double lip seal was installed on the mandrel
according
to the right direction of assembly
and fit it into the seal
holder (
13
) (
see § Assembling the shaft seal
).
Single lip seal greasing
The lip of the seal is lubricated with the lubricant used in the pump.
