Specifications Information and Repair Parts Manual
3100-99
3100-254-00
2
07/2012
3-Inch Trash Pedestal Pump
TO REPLACE SEAL:
IMPORTANT:
Always replace both seal seat and seal
head to ensure proper mating of components!
1.
Thoroughly clean shaft surface and all surfaces
of seal seat cavity.
2.
Carefully wipe polished surface of new seal seat
with a clean cloth.
3.
Press new seal seat squarely into cavity in
adapter. If seal seat does not press squarely
into cavity, it can be adjusted into place by
pushing on it with a piece of pipe. Always use a
piece of cardboard between pipe and seal seat
to avoid scratching seal seat. (This is a lapped
surface and must be handled very carefully).
4.
After seal seat is in place, be sure that is it
clean and has not been marred.
5.
Using a clean cloth, wipe shaft and make
certain that it is perfectly clean.
6.
Secure adapter (Ref. No. 32) on mounting face
of bearing housing (Ref. No. 26).
Tighten cap screws (Ref. No. 27) EVENLY to avoid
cocking adapter on rabbet on mounting face.
7.
Apply a light coating of soapy water to inside
rubber portion of seal head and slide onto shaft
sleeve (Ref. No. 23). Slip shaft sleeve with seal
head onto pump shaft.
IMPORTANT:
Before installing new shaft sleeve, apply
a bead of non-hardening, pliable sealant (such as
Permatex
®
Form-A-Gasket
®
No. 2) to motor shaft
shoulder.
DO NOT touch or wipe face of polished part of seal
head.
8.
Replace impeller shims (Ref. No. 21).
NOTE:
See SHIM ADJUSTMENT on following page.
9.
Screw impeller back in place, tightening until it
is against shaft shoulder.
Never run seal dry for any length of time!
10.
Remount pump casing (Ref. No. 7) on adapter
(Ref. No. 32).
TO REMOVE FRONT WEARPLATE
(REF. NO. 4)
Remove suction cleanout cover plate (Ref. No. 2) using
handles as jackscrews as described under CLEANING.
Front wearplate is attached to cover with three 5/16"
stainless steel socket head cap screws (Ref. No. 5).
Remove these screws and replace wearplate. Be sure
mating surfaces are wiped clean of all dirt. When
replacing socket cap screws above, it is recommended
that Loctite or a similar thread locking material be applied
to screws to prevent loosening in operation.
TO REMOVE CUTWATER/WEARPLATE (REF. NO. 21)
Remove front pump assembly by removing six cap
screws (Ref. No. 31) that hold casing (Ref. No. 7) to
adapter (Ref. No. 32). Remove impeller by unscrewing
(right hand thread) it from shaft. Cutwater/wear plate can
then be removed by removing socket head screws (Ref.
No. 19) that hold it to adapter (Ref. No. 32). In replacing
cutwater/wear plate, use of Loctite or a similar material is
recommended as described for front wear plate above.
TO REMOVE SEAL:
1.
Remove pump casing (Ref. No. 7) and impeller
(Ref. No. 17) as described under TO REMOVE
CUTWATER/WEARPLATE.
2.
Remove shaft sleeve (Ref. No. 23) with seal
head (Ref. No. 22) on it. Remove seal head from
sleeve.
3.
Unthread cap screws (Ref. No. 27) and remove
adapter (Ref. No. 32) from mounting face of
bearing housing (Ref. No. 26).
4.
Push seal seat from adapter recess with a
screwdriver.
Figure 1
– Mechanical Seal