Mechanical Seals - Removal And Fitting; Lower Seal (Hydraulic Side) - ABS XFP 80C-CB1 PE22/4-C-50 Workshop Manual

6

Mechanical Seals - Removal and Fitting

6.1

Lower seal (hydraulic side)

ABS submersible sewage pump XFP 80C - 150E
Removal
Remove volute, bottom plate and impeller (see page 8).
Note: drain oil from oil chamber before removal of the
136
mechanical seal
(see page 14).
140
Remove circlip (140) and impeller key from shaft (65).
Using two screw drivers as levers, slide rotational section
138
of seal (138) from shaft.
Remove screws (136) from seal holding plate (134).
Using two screwdrivers as levers, slide seal holding plate
134
from shaft.
Push stationary section of seal (138) from seal holding
plate using seal press hand tool (Sec 12.1).
135
Fitting new seal
Inspect O-ring (135) for damage and if necessary replace.
Lubricate O-ring with oil and fit onto seal holding plate.
65
Spray P-80* lubricant into seal holding plate bore.
Fit stationary part of mechanical seal, with rubber boot
sitting in bore and polished seal surface facing outwards.
Clean seal surface with paper towel and brush with oil.
Place assembly over shaft. Use seal press tool to 'click'
into position.
Note: ensure first that working edge of press tool is clean
so as not to contaminate or damage seal surface.
Secure with screws (136).
Fit shaft sleeve tool (Sec 12.2) over shaft.
Note: required to prevent damage to seal from circlip
grooves on shaft.
Lubricate shaft and inside rubber bellow of rotating part of
seal with P-80.
Place rotating part of seal over shaft, ensuring polished
seal surface is facing inwards (to meet with same on
stationary part).
Using seal press tool push seal over assembly sleeve tool
until it 'clicks' into final position on shaft.
Slide seal washer over shaft.
Refit circlip (140) and use seal press tool to 'click' into
position.
Refill oil chamber.
Refit impeller key.
Refit volute, impeller and bottom plate, and adjust if
necessary (page 8).
*P-80 is a temporary lubricant, and will dry, returning the
lubricated parts to their original condition. It is designed
only to aid assembly of rubber parts.
DO NOT use any other synthetic lubricant or oil where
P-80 is specified as it will remain and prevent the correct
functioning of the parts to which it is applied.
Tip: if not available, a soapy water solution can be used as
a substitute.
ENSURE WORk AREA AND TOOLS ARE CLEAN
Workshop Manual 9
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