Inner Seal- Remove seal (10) rotating member and
spring from rotor shaft. Press stationary portion from seal
housing (16) with flat 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 (10).
Bearings - Using a bearing puller or arbor press remove
bearing (50) from shaft. Remove upper motor bearing (51)
from shaft with a bearing puller.
IMPORTANT! - All parts must be clean before
reassembly. Handle seal parts with extreme
care. DO NOT damage lapped surfaces.
REASSEMBLY
Bearing - Be careful not to damage the rotor shaft when
replacing bearing. Using an arbor press, hold the rotor
and press the upper bearing (51) on the rotor shaft,
applying force to the inner race of the bearing only.
In the same manner replace lower bearing (50) onto rotor
shaft.
Inner Seal - Clean and oil seal cavity in seal housing (16).
Lightly oil (Do not use grease) outer surface of stationary
member. Press seal's (10) stationary member firmly into
seal housing (16), using a clean seal tool or pipe. Noth-
ing should come in contact with the seal face except the
seal tool. Be sure the stationary portion is in straight.
Place seal's (10) retaining ring and spring over shaft until
seated. Slide a bullet tool over rotor shaft threads.
Lightly oil (Do not use grease) shaft, bullet, and inner
surface of bellows on rotating member, slide rotat-
ing 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. Compress spring and install
retaining ring (13).
Seal Housing - Lubricate and set o-ring (12) in groove of
seal plate (11). Place seal plate (11) over shaft and onto
seal housing (16), being sure o-ring (12) is not twisted and
in the groove. Place four capscrews (14) through holes in
seal housing and into seal plate and torque to 6.5 ft/lbs.
Outer Seal - Clean and oil stationary seal cavity in seal
plate. Slide seal guide tool over motor shaft. Lightly oil
(Do not use grease) outer surface of seal's (10) stationary
member.
Press stationary firmly into seal plate using a clean seal
pusher tool. Be sure the stationary member is in straight.
Nothing but the seal tool is to come in contact with seal
face.
IMPORTANT ! Do not hammer on the seal
pusher. It will damage the seal face.
Grinder Pumps
Model: AGP200 Series
Service
With lapped surface of rotating member facing inward
toward stationary, slide rotating member and onto shaft,
until lapped faces of stationary and rotating seal are to-
gether. Place spring over shaft and rotating member. Be
sure it is seated on the retainer and not cocked or resting
on bellows tail.
Impeller - Place impeller (9) on motor shaft by turning
clockwise while holding shaft stationary with screwdriver.
Shredding Ring - Install shredding ring (6) into volute and
install retaining ring (2) with cap screw (1).
Cable Assembly:
Check power cord (37) for cracks or damage and replace
if required. Insert one friction ring (34), grommet (35),
one friction ring (34), and gland nut (36) into cord cap
(33) and tighten gland nut (36).
Volute - Place volute (7) on seal plate (11). Place hex nut
(1) through seal plate (11) and into volute (7) and torque
evenly to 11 ft/lbs.
Cutter - Place anti-seize compound on cutter threads.
Screw radial cutter (5) onto shaft, turning it clockwise
while holding the shaft stationary with a screw-
driver. The radial cutter (5) should be flush with shredding
ring (6), on suction side to within ± .020. Place washer
(4) on screw (3), apply green Loctite on threads and place
onto shaft and tighten.
Upper Housing & Capacitors -
Assemble capacitors (30), (24) and relay (26) to bearing
plate (22). Place o-ring (12) onto motor housing (19).
Connect wires per schematic, see Figure 6 & 7. Set cord
cap (33) onto motor housing (19), place cap screws (32)
into housings and torque to 6.5 ft/lbs.
9