Suction Chamber; Stator; Stator/Support/Discharge Flange Assembly; Packing - moyno 1000 Service Manual

2. Fold other end of seal back towards center of
connecting rod.
3. Spread head snap ring (J) ends and place on drive
shaft between drive shaft head and stuffing box.
4. Place head O-ring (K) in matching groove on drive
shaft head.
5. Fill shaft head with a good grade of EP (Extreme
Pressure) lithium soap-base grease such as Shell
Alvania EP1 (Shell Oil Co.), Texas Refinery Corp. 880
Crown and Chassis grease, or equivalent.
6. Slide retaining ring (6100), chamfered end first,
over universal joint seal on to connecting rod.
7. Place end of connecting rod in drive shaft head and
align holes. Coat drive pin (6300) with grease and insert
in pin hole.
8. Slide retaining ring back over the universal joint
seal and place on the drive shaft head, exposing
universal joint seal groove.
9. Unfold the seal and snap the lip in matching groove
on the shaft head.
10. Slide the retaining ring back, compressing the lip
of the seal and exposing the snap ring groove on the
shaft head. Install snap ring in groove to secure the
retaining ring.
11. Using similar procedures outlined in previous
steps 1 through 10, attach rotor (5000) to connecting
rod or auger assembly.

4-32. Suction Chamber

1. Screw drain plug (N or P) into bottom of suction
chamber.
2. Before installing the suction chamber (1100), make
sure that the stuffing box and packing gland bolt holes
are in a horizontal plane parallel to the pump base. If
not, turn stuffing box in either direction until bolt holes
are horizontal.
3. Place suction chamber gasket (1220) over
projection on end of suction chamber.
4. Slide suction chamber over the rotor and
connecting rod or auger assembly and fasten to the
bearing housing.
On standard models, fastening is by means of suction
chamber bolts and lock washers (M). On open throat
models, the suction chamber slides onto studs (O)
protruding from the bearing housing and is secured with
nuts and lock washers.

4-33. Stator

1. Put stator gasket (1200) in place in the exposed
end of suction chamber.
Note: 1. Before installation of stator, lubricate rotor and/or
inside of stator with water or glycerine to facilitate
installation. Be sure to use a lubricant that is
compatible with the stator elastomer.
2. On four-stage models, a stator adaptor (1500) will
be used. Place stator adaptor gasket (1210) in
suction housing, install stator adaptor and place
stator gasket in stator adaptor before installing
stator.
2. Slide stator clamp rings (1800) on both ends of the
stator (6500) and secure in position with retaining rings (R).
3. Slide stator (6500) over the rotor.
Note: Turning the rotor counterclockwise while inserting into
stator makes assembly easier.
4. If the stator is firmly seated against the stator gasket in
the suction housing recess, align the holes in clamp ring
with the threaded holes in the suction housing. Thread the
four hex head bolts (M) with lock washers through hole in
clamp ring into the threaded holes. Tighten bolts evenly.
4-34. Stator Support/Discharge Flange Assembly
1. Place top of stator support over stator. Fasten to
bottom half of stator support using hex head bolts.
Note: Some smaller models have a fabricated steel
support that attaches to the stator clamp ring at the
discharge end.
2. Place stator gasket in recess in discharge flange and
position discharge flange on end of stator. Align holes in
stator clamp ring with threaded holes in discharge flange.
Install and evenly tighten the hex bolts.

4-35. Packing

1. Lubricate inside diameter of packing (6900) in
accordance with manufacturer's instruction.
2. Install 4 rings of packing in stuffing box, staggering
joints at 90 degrees intervals. The lantern ring should be in
between with 2 rings on each side.
Note: On new packing, typically 4 rings are installed with a
th
5 being added after adjustments.
3. Secure packing gland with packing gland screws, lock
washer and nuts (H).
4. Adjust packing per Section 4-3.

4-36. Pump Connections

1. Install shaft key (l) in drive shaft keyway for installation
of coupling or sheave.
2. Connect piping to pump.
10