F−1031, Section 4209
Page 4 of 7
Rev: 01/03/07
Reassembly
Reassembly is essentially the reverse of disassembly. If undersize wear rings are required, install them at this time. If a new impeller is needed, also install
new standard size wear rings for it. Refer to the following instructions on repacking pump or replacing mechanical seal.
Mechanical Seal
CAUTION
The mechanical seal primary and stationary rings are made of brittle ma-
terial. The material can be cracked or chipped. Extra care must be taken
when handling 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.
1.
Apply a light coating of seal lubricant to the O−ring on the stationary
seal ring of the mechanical seal.
Note: To protect the rubber bellows of the mechanical seal, place
a piece of masking tape over the keyway on the impeller shaft,
making sure that the tape is able to be removed after bellows has
passed over the keyway.
2.
Slip the ring over the end of the impeller shaft, with the finish lapped
face of the ring facing up (the opposite side of a new seal ring has a
mark on it). Slide it along the shaft and push it into and seat it in the
bore in the pump head. If it can not be pushed in by hand it may be
tapped into place by use of a block of wood between the ring and a
hammer.
3.
Wipe the face of the previously installed stationary ring of the mechan-
ical seal with a clean lint free cloth or tissue paper and denatured alco-
hol.
4.
Wipe a few drops of seal lubricant on the inside of the bellows of the
mechanical seal and wipe the face of the carbon ring with a lint free
cloth or tissue paper and denatured alcohol. Liberally coat impeller
shaft with seal lubricant. Slide the seal onto the shaft until the carbon
ring contacts the stationary seal ring. Install spring assembly.
5.
Slide impeller on the shaft. The mechanical seal is held in place by
notches in the impeller. Continue pump assembly.
IL1024
Figure 1. Mechanical Seal Lubrication Application
If lubricant should get on face of seal ring, wipe it
clean with soft cloth and denatured alcohol.
Coat shaft area bellows
assembly must slide over to
seat with mating ring.
Coat inside of
bellows assembly
