F-1031, Section 4214
Page 7 of 10
Install Mechanical Seal
NOTICE
The mechanical seal primary and stationary rings are made of brittle material.
The material can be cracked or chipped. Extra care must be taken when han-
dling these rings.
Note: If Waterous Mechanical Seal Lubricant part no. 52608 is not available,
P80 rubber lubricant, straight dish soap or glycerin may be substituted.
Reassembly
4. Install the seal stationary ring:
a). Apply a light coating of seal lubricant to the O-ring in the
stationary seal ring.
b). Identify the lapped surface of the seal stationary ring. The un-
lapped face of the stationary ring has a mark. The lapped
surface has no mark,
c). Slide the stationary ring over the end of the shaft with the
lapped face facing out. Push the stationary ring along the shaft
and into the bore in the volute body. If it cannot be seated by
hand, lightly tap into place with piece of wood being careful
not to scratch or mar the lapped face.
d). Wipe the lapped face of the stationary ring with a clean, lint-
free cloth or tissue paper to remove any seal lubricant.
1. Temporarily install the impeller key and impeller on the shaft. Rotate the
impeller. There should be no contact between the impeller and wear ring
in the pump body. If there is contact, correct before proceeding.
Check for the following causes of the contact:
a). Raised burr or nick on either the impeller hub or wear ring.
b). Wear ring was cocked when installed in volute body and is deformed
sufficiently to contact the impeller.
c). Impeller shaft not assembled or installed correctly. Check that correct
spacers and other components were used.
2. Remove the impeller and key.
3. Slide the throttle bushing over the shaft and down into the bore in the
volute body. Tap into position until it is seated in the volute body bore.
