Power-Flo Pumps & Systems • 877-24PUMPS • www.powerfl opumps.com
11
Bearings & Inner Seal -
Remove seal (19)
rotating member and spring from rotor
shaft. Press stationary from intermediate
(21) with fl at screwdriver. Examine all seal
parts. Inspect contact faces for signs of
uneven wear tracks on stationary, chips
and scratches on either seal face.
DO
NOT interchange seal components,
replace the entire shaft seal (19).
Remove retaining ring (39) from shaft.
Using a wheel puller or arbor press
remove bearing (18) from shaft. Remove
upper motor bearing from shaft with a
bearing puller. (See Figure 3)
Check sleeve bearing (23) for excessive
wear, if replacement is required, press
sleeve from intermediate coupling (21).
IMPORTANT! - All parts must be
clean before reassembly.
Handle seal parts with extreme
care. DO NOT damage lapped
surfaces.
Reassembly
Bearings -
Be careful not to damage
the rotor shaft when replacing bearings.
Using an arbor press, hold the rotor and
press the upper bearing on the rotor
shaft, applying force to the inner race of
the bearing only. Replace upper retaing
ring onto rotor shaft. In the same manner
replace lower bearing (18) onto rotor
shaft. Place lower retaining ring (39) onto
shaft.
Inner Seal -
Clean and oil seal cavity
in intermediate coupling (21). Lightly
oil
(Do not use grease)
outer surface
of stationary member. Press seal’s
(19) stationary member firmly into
intermediate coupling (21), using a seal
tool or pipe. Nothing should come in
contact with the seal face except the seal
tool. Be sure the stationary is in straight.
Place seal’s (19) retaining ring and spring
over shaft until seated on shaft shoulder.
Slide a bullet tool over rotor shaft threads.
Lightly oil
(Do not use grease)
shaft,
bullet, and inner surface of bellows on
rotating member, with fi nished end away
from motor, slide rotating member over
bullet and onto shaft until it engages
spring.
Make sure spring is seated in retaining
ring and spring is lined up on rotating
member and not cocked or resting on
bellows tail. (See Figure 3)
Motor -
Slide rotor/shaft with bearing
(18) and seal parts (19) into intermediate
coupling (21) until bearing seats into
intermediate coupling. Install retaining
ring (39) into intermediate coupling (21).
Place motor stator over rotor, lining up
motor bolts with holes in intermediate
coupling (21). Place end bell on top of
motor and insert motor bolts and torque
to 17 in-lbs.
Set square ring (20) in grove on
intermediate coupling (21). Attach
ground wire (36) to end bell if removed.
Pull wires through opening in top of
motor housing (15) while lowering motor
housing onto intermediate coupling
(21). Connect wires to pins on bottom
of terminal block (37) as noted at
disassembly and/or see wiring digrams in
Figure 7.
Lubricate o-ring (9) with dielectric oil
and slide terminal block (37) back into
housing (15). Be sure terminal block is
engaged and install retaining ring (38).
Place cap screws (35) with lockwashers
(11) through housing (15) into
intermediate coupling (21) and tighten.
(See Figure 4)
Service
Figure 3
PFG - HH & HV 2HP
Submersible Grinder Pumps
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