User Manual

8. Remove impeller from shaft, being
careful not to lose the impeller key, spring
and seal retainer. If impeller is difficult to
remove, it may be necessary to use a
bearing puller to pull off impeller.
9. Pry off rotating member of mechanical seal
from sleeve by using two (2) screwdrivers.
(Figure 2)
10. Remove bolts holding adapter to motor and
take off adapter.
11. Place adapter on a flat surface with case
rabbet facing down, and push out stationary
part of mechanical seal.
12. Inspect the shaft sleeve, shaft O-ring and
flinger. If damaged or worn, remove and
replace with a new one.
B.) Reassembly:
CAUTION: The mechanical seal is a precision
product and should be handled accordingly. Use
care when handling the lapped running surfaces
of the mechanical seal to ensure they remain
clean and free of chips or scratches.
1. Clean gasket and flange faces, seal seat
cavity, shaft sleeve, and motor shaft.
2. Lubricate the seal seat cavity of the adapter
and the rubber cup or O-ring of seal seat
with the lubricating fluid that comes with the
mechanical seal or repair kit. Press the
stationary seat in seal seat cavity of the
adapter squarely and evenly using a arbor
press (if possible) and the cardboard disc
supplied with the seal. Be certain that the
lapped face (shiny side) is facing you.
3. Install the flinger on the motor shaft until it
bottoms on the motor shaft.
4. Slide the shaft O-ring on the motor shaft
until it is tight against the flinger. Make sure
that the shaft O-ring does not get damaged
during this procedure.
5. Position shaft sleeve chamfer towards
motor and slide on motor shaft.
6. With motor preferably in vertical position,
remount the adapter on motor, making sure
the motor shaft does not dislocate or chip
the stationery seat of the seal.
7. Apply the lubricating fluid that comes with
the mechanical seal or repair kit to the shaft
sleeve and the rubber bellows of the rotary
seal. Slide the seal head on the sleeve;
press the rubber drive band on the rotary
head until the lapped face on the head seats
firmly against the lapped face of the
stationary seat. Do not chip or scratch faces
during installation. Take extra care to make
sure the lapped faces are clean. Install seal
spring on seal head and retainer on spring.
8. Place key in key seat. Line up keyway in
impeller with key on motor shaft, and slide
impeller on motor shaft. Be certain that the
key is positioned in the keyway of the motor
and impeller. Slightly compress seal spring
with impeller and hold impeller while
installing impeller retaining assembly in
motor shaft.
9. Insert a screwdriver in a waterway passage
of the impeller holding it against rotation
and tighten the retaining assembly as
discussed in paragraph 7 of disassembly
instructions. The impeller will compress the
seal spring to the proper length assuring the
correct pressure on the lapped surfaces.
10. Remove any burrs caused by screwdriver on
the vane of impeller in waterway passage.
11. Slide motor and rotating element in casing.
Be sure that any damaged O-ring or gasket
is replaced.
12. Tighten casing bolts alternately and evenly.
13. Replace hold-down bolts.
14. Check for free rotation after assembly is
completed.
15. Seal all drain openings using pipe sealant
on threads.
16. Reprime before starting. Do not start until
pump is completely filled with water.
C56 FRAME MOTOR
A.) Disassembly:
1. Refer to “JM FRAME” Disassembly,
Notes 1-11.
12. Inspect the stub shaft. If damaged or worn,
replace with a new one; removal:
A.) Drive pin from stub shaft and remove
pin.
B.) Loosen set screws
C.) Remove stub shaft from motor
shaft.
Assembly:
For motors with drilled hole:
A.) Slide stub shaft on motor shaft. Line
up set screws in stub shaft with motor
keyway, and drilled hole in stub shaft
with drilled hole in motor shaft.
B.) Tighten set screws
C.) Insert #12 drill in pilot hole of stub
and motor shaft. Drill out opposite
side of stub shaft.
D.) Install pin
For motors without a drilled hole in the
motor shaft:
A.) Slide stub shaft on motor shaft. Line
up set screws in stub shaft with
keyway in motor shaft.
B.) Position stub 3 3/32” from Motor C
face. See Figure 1.
C.) Tighten set screws
D.) Insert #12 drill in stub shaft pilot hole
and drill completely through motor shaft
and opposite side of stub shaft. See
Figure 2.
E.) Install pin
Figure 2
MECHANICAL SEAL REPLACEMENT